Downgrade Samsung Galaxy Note 9 SM-N960F/DS Firmware from Android 10 to Android 8.0 - Samsung Galaxy Note 9 Questions & Answers

Hi All,
I urgently need some help to downgrade Samsung Galaxy Note 9 phone Model No: SM-N960F/DS from currently running OS Android 10 to Android (Oreo) 8.1 or 8.0.
Following are the current versions running:
Software version: SAOMC_SM-N960F_OXM_XSA_QQ_0016
Knox Version: Knox 3.4.1, Knox API Level: 30, TIMA: 4.10.
I have downloaded the XSA version of Android 8.1 from Sammobile, followed all the instructions by running Odin3 V3.14.4, gone into the Download mode of the phone. The phone connects to Odin as I can see on Odin status of Blue Colour Com connection established, Odin then displays "Recovery", unfortunately the phone gets stuck at this status showing "Recovery". I have let the phone run for hours or even a full day but the status never changes from "Recovery"
Could anyone please assist me to complete the downgrade. Am I missing any step here?
Thanking you in advance

I don't think downgrade to oreo is possible. Pie is possible if baseband version's 5th character from the back is 4.

Rosli59564 said:
I don't think downgrade to oreo is possible. Pie is possible if baseband version's 5th character from the back is 4.
Click to expand...
Click to collapse
Thank you for the prompt reply. I just check the digit, its 6 not 4. What are my options here?

None. Your options are only firmwares with the number 6, which date to April/May, last OneUI 2.0 firmwares.
I did read that one can flash custom roms that are older, if one leaves Bootloader untouched to v6, but that is something i wouldn't encourage to do.

PlutoDelic said:
None. Your options are only firmwares with the number 6, which date to April/May, last OneUI 2.0 firmwares.
I did read that one can flash custom roms that are older, if one leaves Bootloader untouched to v6, but that is something i wouldn't encourage to do.
Click to expand...
Click to collapse
Thank you PlutoD, I am happy to read about it as well, if you want to post the link or let me know where to find the info.

CrazynWild said:
Thank you PlutoD, I am happy to read about it as well, if you want to post the link or let me know where to find the info.
Click to expand...
Click to collapse
I have no links except the Development board here, my input came as something that i've seen discussed somewhere in there.
As you can see, there are some Oreo Custom ROMs, i'm not sure if they are actively maintained (if one can say anything active about that), but if you are determined to do what you want, i would start by choosing the ROM first, put a question there or the last resort, contact the developer.
I'll be very blunt with you, i see no reason for people to revert to older roms, but i dont want to get in to that argument, but having a v6 Bootloader (and maybe Modem too) with a v1/v2 system firmware is something that could give you unpredictable issues nobody could help you with.

Could boot a pie custom rom with android10 bootloader. Not sure about oreo though

Related

* G925VVRS4DQD1 * Full Odin Nougat 7.0 Firmware *

Hello!
Here is the full G925VVRS4DQD1 Odin manual update to 7.0 Nougat for everyone to enjoy. You can flash from any current version you have now it doesn't matter whether you are on 5.1.1 or 6.0.1.
https://www.androidfilehost.com/?fid=529152257862722630
If for whatever reason you want to downgrade or don't like 7.0, you can safely downgrade to any of the below versions without any issues. After you flash a lower android version using Odin, phone might get stuck on Verizon logo. If that happens, all you need to do is boot into recovery and do a factory wipe/reset and phone will boot right up after that.
G925VVRS4CQA3 (6.0.1) - https://www.androidfilehost.com/?fid=529152257862700500
G925VVRS4CPL3 (6.0.1) - https://www.androidfilehost.com/?fid=673368273298921946
G925VVRU4CPK2 (6.0.1) - https://www.androidfilehost.com/?fid=385035244224407601
G925VVRU4CPD2 (6.0.1) - https://www.androidfilehost.com/?fid=24566454284190657
G925VVRU4BOK7 (5.1.1) - https://www.androidfilehost.com/?fid=24269982087018504
G925VVRU4BOG9 (5.1.1) - https://www.androidfilehost.com/?fid=24052804347845467
Thanks a lot! I downloaded one from sammobile but there was one only one file, modified date 4/07...
I notice the files within the zip from your link mention REV02 and are dated 4/26.
G925V_G925VVRS4DQD1_VZW_USA_v7.0_IMEIAUTHORITY.COM.zip
2.54 GB (2,732,088,886 bytes)
MD5: 145a137d2c639b30ef5addac9094f331
I have attached the results from HashMyFiles for the 4 within the archive (Filename, MD5, SHA1, CRC32, SHA-256, SHA-512, SHA-384, Modified Time, File Size).
@toutanje Out of curiosity, how did you determine which builds you can safely downgrade to from 7.0? Is it something you personally tested or did someone recently go through the hard work and post their results somewhere? BTW, you can now add G925VVRS4CQA3 (6.0.1) - https://www.androidfilehost.com/?fid=529152257862700500 as two people have confirmed downgrade success here: https://forum.xda-developers.com/verizon-galaxy-s6-edge/help/downgrading-nougat-t3601096 . One used firmware from sammobile and the other directly from the link above. This is the very last build available for Marshmallow.
Hi there. I installed the new update on my s6 edge 7.0 via verizon software updating tool.am noticing the sound quality of mt s6 edge has been changed.before the sound quality was thick and now its not that thick anymore.i want to bring back the thick quality sound on my s6 edge.there is setting called sound quality and effects but i cant manage to get back that sound quality i had with 6.0. Is there anyone who able to notice this change in the sound?
blkt said:
@toutanje Out of curiosity, how did you determine which builds you can safely downgrade to from 7.0? Is it something you personally tested or did someone recently go through the hard work and post their results somewhere? BTW, you can now add G925VVRS4CQA3 (6.0.1) - https://www.androidfilehost.com/?fid=529152257862700500 as two people have confirmed downgrade success here: https://forum.xda-developers.com/verizon-galaxy-s6-edge/help/downgrading-nougat-t3601096 . One used firmware from sammobile and the other directly from the link above. This is the very last build available for Marshmallow.
Click to expand...
Click to collapse
With a very a simple observation, no testing or anything needed
G925VVRS4DQD1 <-- you see the 4 towards the end of firmware build? That is the revision bit number. This means you can flash ANY firmware for that model with a 4 or higher. Take this 5.1.1 firmware for example ---> G925VVRU3BOG5. Even though this firmware is also 5.1.1 like the ones from above, this particular one will NOT work because it is on an older firmware revision bit (3).
The same is true and goes for ALL Samsung phone/tablet models and firmwares.
toutanje said:
With a very a simple observation, no testing or anything needed
G925VVRS4DQD1 <-- you see the 4 towards the end of firmware build? That is the revision bit number. This means you can flash ANY firmware for that model with a 4 or higher. Take this 5.1.1 firmware for example ---> G925VVRU3BOG5. Even though this firmware is also 5.1.1 like the ones from above, this particular one will NOT work because it is on an older firmware revision bit (3).
The same is true and goes for ALL Samsung phone/tablet models and firmwares.
Click to expand...
Click to collapse
That is very good to know. Yeah I noticed it about the firmware naming convention but I had no idea what the value means (or the character before revision bit, U has become S). My phone out of the box was on G925VVRU3BOG5, so I guess I could go all the way back to G925VVRU4BOG7 if "needed" lol.
One of my fears about Nougat is about all the work they did to automate and place updates into the background. This could allow disabling of downgrades, or anything else at the discretion of Samsung and/or the carrier. I think this has already been done in Marshmallow, just on a smaller scale for security fixes. Anyway, it seems to me like an attack vector waiting to happen: less control over my phone combined with an easy way to break things. Imagine all the troubleshooting fun we will have.
So I upgraded to nougat. I'm having battery issues and just want to go back to marshmallow. but I'm having problems. The nougat rom installs just fine with odin. But when I try with any of the 6.0.1 roms it was failing. Then I noticed that re-partition was chcekd. So I unchecked it and now it goes through the process just fine. But now the complains with dm-verity verification failed. I can install nougat on it no problem. It's just the downgrade that's not working... any clues?
toutanje said:
With a very a simple observation, no testing or anything needed
G925VVRS4DQD1 <-- you see the 4 towards the end of firmware build? That is the revision bit number. This means you can flash ANY firmware for that model with a 4 or higher. Take this 5.1.1 firmware for example ---> G925VVRU3BOG5. Even though this firmware is also 5.1.1 like the ones from above, this particular one will NOT work because it is on an older firmware revision bit (3).
The same is true and goes for ALL Samsung phone/tablet models and firmwares.
Click to expand...
Click to collapse
I actually managed to get the N925V to downgrade all the way back to the firmware version G925VVRU3BOG5.. May have cost some money for some very specific files but my phone's back on G925VVRU3BOG5 and it's really only a test phone for someone I do work for! I have it rooted with SuperSU and not kingroot and I created a script to keep the phone set to "permissive" so it's able to do full reboots and not just hot reboots using xposed... Unfortunately it seemed like no one cared about it when I posted it in the other thread so it's probably not worth it to a lot of people but I think it is with the amount of fine tuning I did to get it to where it is today!!
MrMike2182 said:
I actually managed to get the N925V to downgrade all the way back to the firmware version G925VVRU3BOG5.. May have cost some money for some very specific files but my phone's back on G925VVRU3BOG5 and it's really only a test phone for someone I do work for! I have it rooted with SuperSU and not kingroot and I created a script to keep the phone set to "permissive" so it's able to do full reboots and not just hot reboots using xposed... Unfortunately it seemed like no one cared about it when I posted it in the other thread so it's probably not worth it to a lot of people but I think it is with the amount of fine tuning I did to get it to where it is today!!
Click to expand...
Click to collapse
Mike! Can you explain how you did it? I'm stuck on nougat. Every time I try to downgrade, I get the dm verity error. I've tried all the 6.0.1 version and the 5.0.1. No luck . I'm back on nougat. Can you please let us know your process... Thanks!
Did you have to select anything special in the options? I just left it at default which is Auto reboot & F. Reset Time.
strandedhuman said:
Mike! Can you explain how you did it? I'm stuck on nougat. Every time I try to downgrade, I get the dm verity error. I've tried all the 6.0.1 version and the 5.0.1. No luck . I'm back on nougat. Can you please let us know your process... Thanks!
Did you have to select anything special in the options? I just left it at default which is Auto reboot & F. Reset Time.
Click to expand...
Click to collapse
I mean I could but I had to shell out some money for this firmware and I don't even know if you can flash it with odin because I don't use odin I bought a box to do my flashing since I work on so many phone's and odin just doesn't cut it.
No Worries. Finally figured it out. Good luck to you
MrMike2182 said:
I mean I could but I had to shell out some money for this firmware and I don't even know if you can flash it with odin because I don't use odin I bought a box to do my flashing since I work on so many phone's and odin just doesn't cut it.
Click to expand...
Click to collapse
I was able to use this to flash my Samsung Galaxy S6 Edge from 5.1.1 to 7.0.
Not that I want to upgrade again, but is there a 7.1.2 available? Is there a routine schedule for that sort of thing or was the 7.0 Nougat think kind of a special case?
Thanks!
--
Furry cows moo and decompress.
WyrdWyrd said:
I was able to use this to flash my Samsung Galaxy S6 Edge from 5.1.1 to 7.0.
Not that I want to upgrade again, but is there a 7.1.2 available? Is there a routine schedule for that sort of thing or was the 7.0 Nougat think kind of a special case?
Click to expand...
Click to collapse
I haven't been keeping up, but now curious. Verizon shows DQH1 as current (a 7.0 build), while sammobile and androidfilehost show four builds available (all 7.0).
Ok, so I updated my G925V with nougat, now I'm just wondering if anyone has come out with a way to root this build? That's what I'm waiting for. Plz fill me in when that happens. Thanks.
MrMike2182 said:
I mean I could but I had to shell out some money for this firmware and I don't even know if you can flash it with odin because I don't use odin I bought a box to do my flashing since I work on so many phone's and odin just doesn't cut it.
Click to expand...
Click to collapse
I've been wanting to get one too. Which box plus tool do you use?
Delgoth said:
I've been wanting to get one too. Which box plus tool do you use?
Click to expand...
Click to collapse
I use the Z3x box and Octoplus box I have 2 of them for different phone makers but I have so many different wire connectors that I lost count because what works on Samsung doesn't work on LG, HTC etc etc.. You can find them pretty cheap but I'd avoid buying from eBay because of to many scams selling broken or bad boxes that can't be activated.
Team Z3x .com
MrMike2182 said:
I use the Z3x box and Octoplus box I have 2 of them for different phone makers but I have so many different wire connectors that I lost count because what works on Samsung doesn't work on LG, HTC etc etc.. You can find them pretty cheap but I'd avoid buying from eBay because of to many scams selling broken or bad boxes that can't be activated.
Team Z3x .com
Click to expand...
Click to collapse
was this the only way to downgrade? im on 6.0.1 and im not able to downgrade to 5.1.1 for root lol
raven213 said:
was this the only way to downgrade? im on 6.0.1 and im not able to downgrade to 5.1.1 for root lol
Click to expand...
Click to collapse
You unfortunately cannot downgrade the bootloader once you updated to 6.0.1 you lost the ability to go back and there's so far, no way possible to do it.

Which official firmware should I download for my Note 9?

Hi everyone,
I bought a Note 9 a few days ago and its rooted. It has got Android 9 One UI 1.0
I wanted to update the software but it has no software update option.
So I thought maybe I can download the latest software on it through odin.
It is N950F model. On settings, it has the following baseband version: N960FXXU2ZRLR
SE for Android status is showing the following: Enforcing SEPF_SM_N960F_P03_Dr.KetanROM
And bootloader is showing something like this: N960NKSU3CSG3
Now I'm really confused that which firmware should I download?
Can anyone help?
I would recommend that you download and install android 10 to your Note 9.
iceepyon said:
I would recommend that you download and install android 10 to your Note 9.
Click to expand...
Click to collapse
Hi,
I tried to install Android 10 on my phone, but I was getting errors like R/W or something like that on Odin.
ark1995 said:
Hi,
I tried to install Android 10 on my phone, but I was getting errors like R/W or something like that on Odin.
Click to expand...
Click to collapse
Use 'samsung phone info' in playstore. Check which csc the phone originally. Download that csc's firmware and flash.
By right any firmware should do but who knows.
Same
Hi!
Were you able to resolve this?
I am actually having the same problem. With all the scenario the same.
Bought a rooted Note 9
Firmware: N960FXXU2ZRLR
No "Software Update" option in the settings Menu
Android 9.
pliplyon said:
Hi!
Were you able to resolve this?
I am actually having the same problem. With all the scenario the same.
Bought a rooted Note 9
Firmware: N960FXXU2ZRLR
No "Software Update" option in the settings Menu
Android 9.
Click to expand...
Click to collapse
I believe for rooted devices, you need to install the OS update manually
pliplyon said:
Hi!
Were you able to resolve this?
I am actually having the same problem. With all the scenario the same.
Bought a rooted Note 9
Firmware: N960FXXU2ZRLR
No "Software Update" option in the settings Menu
Android 9.
Click to expand...
Click to collapse
once rooted you will lose knox protection, secure folder Samsung health and yes oem updates. even if you flash official again you may receive oem updates but some oem features may not function again. so u might have two options here. one is to re flash via odin the official firmware and use the phone without some features as i mentioned above! also now that our beloved note 9 got the final 2.1 major firmware update it is highly unlikely to get anymore upgrades such as oneui 2.5 but will continue to receive monthly security updates! then the second option is we have some great devs like dr.ketan, AlexisXDA, etc with highly customized roms and many workarounds to get features like S-health and secure folder working and they do keep upgrading the roms and we might even expect to get oneui 2.5 features from them which is excellent. i too am still on stock rom not even rooted but will start having fun flashing roms after my warranty expires for sure! cheers
P.S - use henklbr s frija to download official firmware easily and fast..... https://forum.xda-developers.com/ga...icial-stock-fw-update-odin-thread-xx-t3825204
pliplyon said:
Same
Hi!
Were you able to resolve this?
I am actually having the same problem. With all the scenario the same.
Bought a rooted Note 9
Firmware: N960FXXU2ZRLR
No "Software Update" option in the settings Menu
Android 9.
Click to expand...
Click to collapse
Helo u r able to mke update? I hve same problem dear pls help
ark1995 said:
Hi everyone,
I bought a Note 9 a few days ago and its rooted. It has got Android 9 One UI 1.0
I wanted to update the software but it has no software update option.
So I thought maybe I can download the latest software on it through odin.
It is N950F model. On settings, it has the following baseband version: N960FXXU2ZRLR
SE for Android status is showing the following: Enforcing SEPF_SM_N960F_P03_Dr.KetanROM
And bootloader is showing something like this: N960NKSU3CSG3
Now I'm really confused that which firmware should I download?
Can anyone help?
Click to expand...
Click to collapse
Helo dear same problem pls help if u did updated

Downgrading from Bootloader 5 to Bootloader 4 in Note 9 Exynos

Hi everyone,
I had updated my Galaxy Note 9 with March 2020 update and I am one among many poor souls who are suffering from display discoloration, horizontal lines during low brightness and over heating.
- I have tried all possible methods as suggested by Samsung team in their US community page, tried factory reset multiple times, nothing worked. Took screenshots of the screen and shared it to other to check if the problem is with display, but the screenshots were just fine, no colour distortion or verticle lines. So i am of the opinion that, its basically software glitch in March update.
So, I have some following specific queries. I tried looking for these queries in the forum but did not find any, so, have collated all my queries below:
- My current Bootloader version is 5. Is there any process by which i can downgrade my Bootloader from 5 to 4? I would like to go back to January update.
- If I root my phone and install custom rom (latest version of Linage OS. You guys can suggest a good OS, if you have tried one), will the display problem be solved?
- After installing custom rom as mentioned above, can I go back and install stock firmware with Bootloader version 4?
As you can see, I am just trying to find a solution to come out of display problem. Any other suggestions or any tried and tested solutions are welcome.
Thanks everyone in advance
#note9displayproblems, #note9marchupdate
Nagharjun said:
Hi everyone,
I had updated my Galaxy Note 9 with March 2020 update and I am one among many poor souls who are suffering from display discoloration, horizontal lines during low brightness and over heating.
- I have tried all possible methods as suggested by Samsung team in their US community page, tried factory reset multiple times, nothing worked. Took screenshots of the screen and shared it to other to check if the problem is with display, but the screenshots were just fine, no colour distortion or verticle lines. So i am of the opinion that, its basically software glitch in March update.
So, I have some following specific queries. I tried looking for these queries in the forum but did not find any, so, have collated all my queries below:
- My current Bootloader version is 5. Is there any process by which i can downgrade my Bootloader from 5 to 4? I would like to go back to January update.
- If I root my phone and install custom rom (latest version of Linage OS. You guys can suggest a good OS, if you have tried one), will the display problem be solved?
- After installing custom rom as mentioned above, can I go back and install stock firmware with Bootloader version 4?
As you can see, I am just trying to find a solution to come out of display problem. Any other suggestions or any tried and tested solutions are welcome.
Thanks everyone in advance
#note9displayproblems, #note9marchupdate
Click to expand...
Click to collapse
From what i've read, 5 to 4 is impossible.
Rosli59564 said:
From what i've read, 5 to 4 is impossible.
Click to expand...
Click to collapse
There should be some or the other way around for this. May be some developer should help us out here.
Nagharjun said:
Hi everyone,
I had updated my Galaxy Note 9 with March 2020 update and I am one among many poor souls who are suffering from display discoloration, horizontal lines during low brightness and over heating.
- I have tried all possible methods as suggested by Samsung team in their US community page, tried factory reset multiple times, nothing worked. Took screenshots of the screen and shared it to other to check if the problem is with display, but the screenshots were just fine, no colour distortion or verticle lines. So i am of the opinion that, its basically software glitch in March update.
So, I have some following specific queries. I tried looking for these queries in the forum but did not find any, so, have collated all my queries below:
- My current Bootloader version is 5. Is there any process by which i can downgrade my Bootloader from 5 to 4? I would like to go back to January update.
- If I root my phone and install custom rom (latest version of Linage OS. You guys can suggest a good OS, if you have tried one), will the display problem be solved?
- After installing custom rom as mentioned above, can I go back and install stock firmware with Bootloader version 4?
As you can see, I am just trying to find a solution to come out of display problem. Any other suggestions or any tried and tested solutions are welcome.
Thanks everyone in advance
#note9displayproblems, #note9marchupdate
Click to expand...
Click to collapse
I am facing same issue ...display distortion from 20% to 80% ..after that display looks fine.
I tried to downgrade to pie ..still no success...it has same issue...
I also believe that its software issue or some connection issue
Sue samsung for trying to force user to change screen. Samsung's screen is so expensive. Apple was fined for throttling the iphones.
I have same issue on my N9600... :'(
What is causing the distortion? Sofware bug? Can shot a picture showing the issue?
Jlozde said:
What is causing the distortion? Sofware bug? Can shot a picture showing the issue?
Click to expand...
Click to collapse
Ita all over the internet. Just Google Samsung galaxy note 9 display discoloration.
I don't know if this will solve your problem but you would be able to flash a Android 9 ROM on a Android 10 bootloader. If you're like me you hate Android 10. What you do is you flash Android 9 bootloader made for twrp flash the Android 9 rom of your choice. Than flash the Android 10 bootloader that you want via Odin, than fastly reflash twrp for Android 10
For me it works but I kind of jerry-rigged it to work. I regret every day updating to Android 10 but since I'm able to still run Android 9 on an Android 10 bootloader, I'm okay with that.
Hope this kind of help you.
Nagharjun said:
Hi everyone,
I had updated my Galaxy Note 9 with March 2020 update and I am one among many poor souls who are suffering from display discoloration, horizontal lines during low brightness and over heating.
- I have tried all possible methods as suggested by Samsung team in their US community page, tried factory reset multiple times, nothing worked. Took screenshots of the screen and shared it to other to check if the problem is with display, but the screenshots were just fine, no colour distortion or verticle lines. So i am of the opinion that, its basically software glitch in March update.
So, I have some following specific queries. I tried looking for these queries in the forum but did not find any, so, have collated all my queries below:
- My current Bootloader version is 5. Is there any process by which i can downgrade my Bootloader from 5 to 4? I would like to go back to January update.
- If I root my phone and install custom rom (latest version of Linage OS. You guys can suggest a good OS, if you have tried one), will the display problem be solved?
- After installing custom rom as mentioned above, can I go back and install stock firmware with Bootloader version 4?
As you can see, I am just trying to find a solution to come out of display problem. Any other suggestions or any tried and tested solutions are welcome.
Thanks everyone in advance
#note9displayproblems, #note9marchupdate
Click to expand...
Click to collapse
Hi Bro, the same problem here. We have created a group to discuss about the issue. Plz join there and will discuss about this.
https://t.me/samsungDisplayProblem
We have a temporary fix for this but also trying for permanent fix which can solve our issue.
---------- Post added at 01:42 PM ---------- Previous post was at 01:39 PM ----------
sagarabhiwant said:
I am facing same issue ...display distortion from 20% to 80% ..after that display looks fine.
I tried to downgrade to pie ..still no success...it has same issue...
I also believe that its software issue or some connection issue
Click to expand...
Click to collapse
Hi Bro, we are also facing the same issue so we have created a Telegram group to discuss about this and gathering all with this problem. Plz join there.
https://t.me/samsungDisplayProblem
We have two to three temporary fixes but we also trying for permanent fix.
this.guy.lol said:
I don't know if this will solve your problem but you would be able to flash a Android 9 ROM on a Android 10 bootloader. If you're like me you hate Android 10. What you do is you flash Android 9 bootloader made for twrp flash the Android 9 rom of your choice. Than flash the Android 10 bootloader that you want via Odin, than fastly reflash twrp for Android 10
For me it works but I kind of jerry-rigged it to work. I regret every day updating to Android 10 but since I'm able to still run Android 9 on an Android 10 bootloader, I'm okay with that.
Hope this kind of help you.
Click to expand...
Click to collapse
hi i have the same problem and i want downgrade to andoid 9 from 10
can you explain how to do it
thanks
majedabbas said:
hi i have the same problem and i want downgrade to andoid 9 from 10
can you explain how to do it
thanks
Click to expand...
Click to collapse
only way is to trip knox by rooting and then flashing an android 9 rom. as you know once it has been tripped you will instantly lose access to samsung pay, secure folders etc. however on the plus side you have the choice of root or non root.
Hi guys,
Me and my mum are experiencing a similar situation.... I'm trying to downgrade my galaxy Note8 boot-loader, everything was working till I press the button to upgrade. Now I cant use any memory card all i see is 'the Sandisk card is not supported' and for my mum's Note 9 when she activates the biometric sensor the phone restarts each 15 - 30 mins. I always bought Samsung but now I'm considering to don't do it anymore...
How do you install android pie over android 10 BL
this.guy.lol said:
I don't know if this will solve your problem but you would be able to flash a Android 9 ROM on a Android 10 bootloader. If you're like me you hate Android 10. What you do is you flash Android 9 bootloader made for twrp flash the Android 9 rom of your choice. Than flash the Android 10 bootloader that you want via Odin, than fastly reflash twrp for Android 10
For me it works but I kind of jerry-rigged it to work. I regret every day updating to Android 10 but since I'm able to still run Android 9 on an Android 10 bootloader, I'm okay with that.
Hope this kind of help you.
Click to expand...
Click to collapse
can you please tell how to install android pie over android 10 BL?
only way is to trip knox root and then flash/ if you dont want to trip knox its not possible
A|ex said:
only way is to trip knox root and then flash/ if you dont want to trip knox its not possible
Click to expand...
Click to collapse
Hi, ok so assuming we don't care about tripping knox, rooting and flash.. still, how would this be done?
I'm on a SM-N9600 atm, with latest Android 10, rooted and TWRP installed. Where do I find a custom Android 9 Rom (compatible with my model) that I can flash via TWRP?
Thanks in advance
Stefo2332 said:
Hi, ok so assuming we don't care about tripping knox, rooting and flash.. still, how would this be done?
I'm on a SM-N9600 atm, with latest Android 10, rooted and TWRP installed. Where do I find a custom Android 9 Rom (compatible with my model) that I can flash via TWRP?
Thanks in advance
Click to expand...
Click to collapse
All you do is just flash the android 9 rom. Downgrading the bootloader makes no difference if you have already unlocked it. The whole point of it is for people who are on later bootloaders and still have knox and want to go to android 9 which is not possible without the trip.
A|ex said:
All you do is just flash the android 9 rom. Downgrading the bootloader makes no difference if you have already unlocked it. The whole point of it is for people who are on later bootloaders and still have knox and want to go to android 9 which is not possible without the trip.
Click to expand...
Click to collapse
Hi @A|ex , thanks for your answer. I still don't know where I can find a custom Android 9 rom, compatible with Note 9 snapdragon (SM-N9600) that I could flash via TWRP... (Assuming it's impossible to flash stock Android 9 via Odin even if my phone is currently already rooted on latest Android 10 (bootloader == 5).
Here on XDA there are some ROMs for the Exynos model but nothing except the 'WETA' rom for Snapdragon model, which is not a full rom anyway from what I understand.
If you could shed some light on this it would be much appreciated: where can I find a custom Android 9 rom, flashable via TWRP, compatible with a rooted SM-N9600 (currently on latest Android 10, with a BL==5, unlocked)?
Thanks again for any help!!

Need help identifying S10+ model, compatible roms and TWRP image

Hello,
I have a Japanese Galaxy S10+ Snapdraon branded for au
CPU-z information: model SCV42_jp_kdi - CPU Qualcomm snapdragon SM8150 8 cores - GPU Adreno 640 - Architecture Kryo 485 - screen 1080x2280 - board msnile - Brand KDDI - model SCV42_jp_kdi
Model number in About phone is SCV42
Model number on box is SM-G975
Bootloader: SCV42KDU1CUD4
Build Number RP1A200720.012.SCV42KDU1CUD4
I have found a matching bootloader here (not sure if this bootloader is needed I have not tried to flash magisk without it) - after flashing the bootloader and patching the official firmware AP with magisk and reinstalling it I get a rooted phone.
The last official rom i could find is dated 2021-04-23.
There are some suspicious sites that claim to have newer firmware that cannot be downloaded without subscribing/paying and then getting taken for a ride throughout links that lead to dead ends.
My first question is can someone who knows this exact model tell me which is the latest official firmware for it? (if available kindly share a link to it)
Edited
The reason I would like the most recent official firmware is to run linux on dex. Currently linux on dex 1.0.51 (which i believe is the last release before it was discontinued - please correct me if I am wrong on this) says it will not run without the latest updates.
Click to expand...
Click to collapse
It turned out linux on dex only runs on devices with Android 9. So a downgrade is needed instead of an upgrade
Which brings me to my second question: is there a way to know if the hardware in my S10+ model is identical to the hardware on some equivalent USA model? The CPU/GPU are the same but is the rest of the hardware the same? Should the answer be yes would it be possible to flash my device with a more recent official firmware from some USA carrier?
On gsmarena only the following model numbers are listed: SM-G975F/DS (Global); SM-G975U (USA); SM-G975W, on sammmobile SCV42 does not exist. Since the box mentioned model as being SM-G975 I am wondering if there is some naming confusion and a way to figure out which letters to add to SM-G975 to find recent matching firmware or if my model is simply not widespread enough to have received the same attention other models did.
Is there a risk of causing irreversible damage (permanent brick) by trying to upload firmware for another model (most likely candidate SM-G975U)?
My last question is about TWRP, After downloading and flashing the latest S10+ snapdragon image pointed at by the TWRP app my device could not boot. Is there TWRP image compatible with my device?
Many thanks for reading so far and any hints/help provided
how do u root your scv42? may i have the file? i use magisk but it failed
Bigboss2233 said:
how do u root your scv42? may i have the file? i use magisk but it failed
Click to expand...
Click to collapse
Simply installing magisk does not work you have to flash a "cracked rom" before (one that matches your current firmware) installing magisk. I used this one Cracked Rom for the latest available SCV42 firmware (the site requires a registration before allowing downloads).
btw thanks for the help, but i've succed to rooted my phone now using stock rom and magisk
Bigboss2233 said:
btw thanks for the help, but i've succed to rooted my phone now using stock rom and magisk
Click to expand...
Click to collapse
sorry to dig an old thread, did you manage to install an international rom on it? currently trying to get rid of the bloated carrier rom.
seb.mfuentes said:
sorry to dig an old thread, did you manage to install an international rom on it? currently trying to get rid of the bloated carrier rom.
Click to expand...
Click to collapse
On the contrary this thread is meant to attract people who want to solve the same issues. I did not try installing an international ROM (too big a task to regain all configurations and apps) , however my uninformed non expert current belief is that trying another country's ROM is not going to wreck the device. Worse case would be it will not work and official ROM will have to be reinstalled (potentially with a nand reset). I settled for using magisk debloater to hide/uninstall apps I did not want (branding on startup remains).
Here is my debloat list in case it helps: (for ROM SCV42KDU1CUD4)
Code:
debloat.import=1
ARZone^=/system/app/ARZone
DictDiotekForSec^=/system/app/DictDiotekForSec
SBrowser_13.0^=/system/app/SBrowser_13.0
FeliCaLock^=/system/app/FeliCaLock
MobileFeliCaSettingApp^=/system/app/MobileFeliCaSettingApp
FeliCaTest^=/system/app/FeliCaTest
MobileFeliCaMenuMainApp^=/system/app/MobileFeliCaMenuMainApp
MobileFeliCaClient^=/system/app/MobileFeliCaClient
JpnDioDict4^=/system/app/JpnDioDict4
SamsungTTS^=/system/app/SamsungTTS
VisionIntelligence3.7^=/system/app/VisionIntelligence3.7
LiveDrawing^=/system/app/LiveDrawing
Weather_SEP12.0^=/system/app/Weather_SEP12.0
ARDrawing^=/system/app/ARDrawing
FeliCaRemoteLockKDI^=/system/app/FeliCaRemoteLockKDI
MobileFeliCaWebPluginBoot^=/system/app/MobileFeliCaWebPluginBoot
DAAgent^=/system/app/DAAgent
KidsHome_Installer^=/system/app/KidsHome_Installer
FeliCaLockTest^=/system/app/FeliCaLockTest
MinusOnePage^=/system/app/MinusOnePage
SystemUIBixby2^=/system/priv-app/SystemUIBixby2
Routines^=/system/priv-app/Routines
KDIDisasterApp^=/system/priv-app/KDIDisasterApp
KDICarNaviSetting^=/system/priv-app/KDICarNaviSetting
KDIAuMarket^=/system/priv-app/KDIAuMarket
PaymentFramework^=/system/priv-app/PaymentFramework
UserDictionaryProvider^=/system/priv-app/UserDictionaryProvider
SamsungBilling^=/system/priv-app/SamsungBilling
SamsungCloudClient^=/system/priv-app/SamsungCloudClient
StickerFaceARAvatar^=/system/priv-app/StickerFaceARAvatar
BixbyAgentStub^=/system/priv-app/BixbyAgentStub
IpsGeofence^=/system/priv-app/IpsGeofence
SPPPushClient^=/system/priv-app/SPPPushClient
KDIAuSettingMenu^=/system/priv-app/KDIAuSettingMenu
KDIMyAu^=/system/priv-app/KDIMyAu
BixbyService^=/system/priv-app/BixbyService
MateAgent^=/system/priv-app/MateAgent
SettingsBixby^=/system/priv-app/SettingsBixby
KDIFacebookInstaller^=/system/priv-app/KDIFacebookInstaller
AREmoji^=/system/priv-app/AREmoji
KDIAuInitialSetting^=/system/priv-app/KDIAuInitialSetting
SamsungExperienceService^=/system/priv-app/SamsungExperienceService
FsDtvApp^=/system/priv-app/FsDtvApp
KDIRepairAndDeliveryService^=/system/priv-app/KDIRepairAndDeliveryService
LiveStickers^=/system/priv-app/LiveStickers
KDIFacebookServices^=/system/priv-app/KDIFacebookServices
KDIFacebookAppManager^=/system/priv-app/KDIFacebookAppManager
KDIAnshinFilter^=/system/priv-app/KDIAnshinFilter
KDIAuSelfcare^=/system/priv-app/KDIAuSelfcare
KDIDataStorageApp^=/system/priv-app/KDIDataStorageApp
KDIAuWifiConnection^=/system/priv-app/KDIAuWifiConnection
KDIRemoteSupportService^=/system/priv-app/KDIRemoteSupportService
SendHelpMessage^=/system/priv-app/SendHelpMessage
techguru97 said:
currently am in SCV-42 s10+ au model android 12 ,i want to flash global rom to remove japan au bloatwares as am not in japan anymore. Is it possible?
Click to expand...
Click to collapse
Yes it is possible. I have the same model running android 11 rooted and unbloated. android 12 should be the same. I have found the rooted boot loader for my model here:
SCV42 U1 Android 12 ROOT (SCV42KDU1DVE4).tar | Halab Tech Support
support.halabtech.com
This is just to download a rooted firmware boot section
For the whole rooting guide you will need to find one on this forum. (the one i used installed magisk)

Just got an SM-N960F/DS but it came with blasted Android 10. Can I downgrade to 8.1?

Hi. I'm wondering if it's possible to downgrade the bootloader and everything to Oreo. The entire reason why I bought this Note 9 in 2022 is because GSMArena said it came 'Android Oreo (Upgradable to Android 10)'. Sadly, upon unboxing and turning it on for the first time, it's already on Android 10 OneUI 2.5. Is there any way to downgrade it at all? How risky is it only in terms of bricking the device?
- I don't care about tripping flash counter
- I am comfortable with Odin
- I don't care about losing data/knox/samsung pay/blah -- it's all dreck anyways
- I need my mass storage mode, sd card writable, etc. I refuse to use new crappy Androids
- I care not about security issues so please don't mention this or any of the above. Answers only please
Baseband is FUE5 and build is FUF5
Model is SM-N960F/DS
Thanks in adVanced!
dimapoter said:
Hi. I'm wondering if it's possible to downgrade the bootloader and everything to Oreo. The entire reason why I bought this Note 9 in 2022 is because GSMArena said it came 'Android Oreo (Upgradable to Android 10)'. Sadly, upon unboxing and turning it on for the first time, it's already on Android 10 OneUI 2.5. Is there any way to downgrade it at all? How risky is it only in terms of bricking the device?
- I don't care about tripping flash counter
- I am comfortable with Odin
- I don't care about losing data/knox/samsung pay/blah -- it's all dreck anyways
- I need my mass storage mode, sd card writable, etc. I refuse to use new crappy Androids
- I care not about security issues so please don't mention this or any of the above. Answers only please
Baseband is FUE5 and build is FUF5
Model is SM-N960F/DS
Thanks in adVanced!
Click to expand...
Click to collapse
Unfortunately, once the bootloader is upgraded, it will block the installation of any lower version stock ROMs, so a proper downgrade to 8.1 is impossible from what I know.
What can be done however is to install TWRP, and see if someone repackaged the Oreo ROM as a flashable zip, which you can flash like any other custom ROM. It might have some bugs since it will be running on the new bootloader, but it otherwise should work.
Aha. So you're saying there's a chance I can get just an Oreo flash working on the new bootloader without downgrading it. I'll give that a try at some point; this way I'd be able to go back to a newer Android in case of some catastrophe. Thanks!

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