downgrade bootloader ? - Samsung Galaxy Note 8 Questions and Answers

hi guys,
I bought SM-N950F. it came with N950FXXS5CRJ1 firmware.
I try installing several different roms but all having issue. LTE don't work while I am on call. speed test shows less than 1 MB speed. wifi calling not there.
is there way to downgrade bootloader ?
thanks

pnjboyzz said:
hi guys,
I bought SM-N950F. it came with N950FXXS5CRJ1 firmware.
I try installing several different roms but all having issue. LTE don't work while I am on call. speed test shows less than 1 MB speed. wifi calling not there.
is there way to downgrade bootloader ?
thanks
Click to expand...
Click to collapse
To my knowledge you can't downgrade the bootloader. What carrier/country? You may just need to update APN settings or something like that. Wifi calling may depend on CSC file too (or require a call to your carrier in some cases)...

USA--> Tmobile.
but why doesn't wifi calling feature does not appear anywhere

pnjboyzz said:
hi guys,
I bought SM-N950F. it came with N950FXXS5CRJ1 firmware.
I try installing several different roms but all having issue. LTE don't work while I am on call. speed test shows less than 1 MB speed. wifi calling not there.
is there way to downgrade bootloader ?
thanks
Click to expand...
Click to collapse
No! Sorry!
You can try another firmware with N950FXX"s5" or "u5"C***
But you can't go back to N950FXX"s/u 4, 3, 2, 1"*****
If your rooted you can just flash a csc zip file containing your cell providers csc. You can find it by searching xda.
But you'll lose Samsung pay, secure folder for good no getting them back without changing motherboard.

thanks
I could not able to understand which csc is for usa

pnjboyzz said:
thanks
I could not able to understand which csc is for usa
Click to expand...
Click to collapse
For USA tmobile is TMB but you will not find that for your phone model SM-N950F. It's only for SM-N950U or U1.
Only way is to root your device and flash the zip file containing the TMB csc .

pnjboyzz said:
thanks
I could not able to understand which csc is for usa
Click to expand...
Click to collapse
You can try csc detonator maybe. As far as i know tmobile doesnt allow phones volte and wifi calling if you dont buy from them yet i dont have many knowlagde on usa models and tmobile but you can take a look at csc detonator or tmobile csc threads

I am experiencing a similar situation, but noticed that the new bootloader after u5 is "S5"? But are both compatible between each other, I don't think they are.

Related

960f/ds exynos can I flash any usa firmware?

Hi people I've recently purchased an unlocked international 960f/ds which happens to be from Singapore and using it here in the US. Now I got few issues with it. When i type in numbers, it does not show with hyphens aka dash. I got like,for example, 2032038080 instead of 203-203-8080 and it doesnt show what town the calling number is from. It just shows what state that number is from, which is really annoying lol. Also, there is no built-in voicemail in the phone app. Because of that, i had to install a carrier voicemail app from playstore.
Does it have anything to do with the current firmware? If so, can i fix or flash anything to get it working? if u are aware of these issues or have already solved plz let me know.
Nope u can't mate.
youngtg said:
Hi people I've recently purchased an unlocked international 960f/ds which happens to be from Singapore and using it here in the US. Now I got few issues with it. When i type in numbers, it does not show with hyphens aka dash. I got like,for example, 2032038080 instead of 203-203-8080 and it doesnt show what town the calling number is from. It just shows what state that number is from, which is really annoying lol. Also, there is no built-in voicemail in the phone app. Because of that, i had to install a carrier voicemail app from playstore.
Does it have anything to do with the current firmware? If so, can i fix or flash anything to get it working? if u are aware of these issues or have already solved plz let me know.
Click to expand...
Click to collapse
no u cannot flash US firmware on 960f/ds. Because the US variant is powered by snapdragon and the model which u have is powered by exynos. flashing US firmware on ur device will fry ur motherboard.
just root ur phone and change ur CSC.
read this for changing CSC.
https://forum.xda-developers.com/ga...0fd-dual-sim-csc-change-oxm-t3841000 :cowboy:
@tycoon78[stoner]
In the same boat I have a n960-F using it in Canada, phone works amazing but I would like to get WifiCalling VoLTE etc. From what I've read I need to flash a local CSC
I use this Dual Sim device for work, and can't have Knox tripped, will flashing a new CSC trip knox?
A couple other questions:
Will this device ever receive OTA updates?
Am I better off selling my n960-F and purchasing a n9600 (dual sim - snapdragon)
Will I be stuck on Oreo with this phone?
Thanks in advance for your help!
hph198 said:
@tycoon78[stoner]
In the same boat I have a n960-F using it in Canada, phone works amazing but I would like to get WifiCalling VoLTE etc. From what I've read I need to flash a local CSC
I use this Dual Sim device for work, and can't have Knox tripped, will flashing a new CSC trip knox?
A couple other questions:
Will this device ever receive OTA updates?
Am I better off selling my n960-F and purchasing a n9600 (dual sim - snapdragon)
Will I be stuck on Oreo with this phone?
Thanks in advance for your help!
Click to expand...
Click to collapse
I can see you've asked this a few times before, it might be worth creating a new thread and asking your question, instead of bumping old threads up.
I can't answer all of your questions but I can answer;
will flashing a new CSC trip knox? No - Unless you go to Dev options and enable OWM unlocking, you can't trip Knox.
Will this device ever receive OTA updates? Yes - as the device is still effectively stock, running stock software, you should get updates depending on what CSC you have.
Will I be stuck on Oreo with this phone? No - The SM-N960F has received Pie in multiple locations now and you can just flash it with Odin.
Will you get VoLTE ect working in Canada? According to the brief research I've done, no, you need a SM-N960W for that. I checked this and this thread.

Note 9 SM-N9600 CSC Change to INS (India) for Enabling Jio VoLTE

Hi All,
Can someone please guide me to a method, if any, to change the CSC of an N9600 model CSC which is currently TGY to INS?
This is to make VoLTE work via the phone dialer instead of using the external Jio4GVoice app.
Is this possible? I know my version is the snapdragon and the Indian version is Exynos 960F or 960FD.
I want to know if the CSC file is processor specific? Can 'only CSC' be flashed via ODIN? If yes, where can i find the CSC files with fast download?
Would it trigger Knox and disable Google/Samsung Pay?
Can someone please provide their inputs?
abhishek.hitman said:
Hi All,
Can someone please guide me to a method, if any, to change the CSC of an N9600 model CSC which is currently TGY to INS?
This is to make VoLTE work via the phone dialer instead of using the external Jio4GVoice app.
Is this possible? I know my version is the snapdragon and the Indian version is Exynos 960F or 960FD.
I want to know if the CSC file is processor specific? Can 'only CSC' be flashed via ODIN? If yes, where can i find the CSC files with fast download?
Would it trigger Knox and disable Google/Samsung Pay?
Click to expand...
Click to collapse
I don't think this will work because the .PIT or partition file is in the CSC image. You would likely require the entire firmware image set to get the support files, frameworks for the dialer. It is not only a matter of a new CSC / region code change.
PulpoRojo said:
I don't think this will work because the .PIT or partition file is in the CSC image. You would likely require the entire firmware image set to get the support files, frameworks for the dialer. It is not only a matter of a new CSC / region code change.
Click to expand...
Click to collapse
So, just for further clarity, I don't want to trip knox or lose samsung/google pay options.
These are my original ROM files:
AP_N9600ZHU1ARJ6_CL14505206_QB20159198_REV00_user_low_ship_MULTI_CERT_meta.tar.md5
BL_N9600ZHU1ARJ6_CL14505206_QB20159198_REV00_user_low_ship_MULTI_CERT.tar.md5
CP_N9600ZCU1ARJ6_CP10967940_CL14505206_QB20159196_REV00_user_low_ship_MULTI_CERT.tar.md5
CSC_OMC_TGY_N9600TGY1ARJ6_CL14505206_QB20159198_REV00_user_low_ship_MULTI_CERT.tar.md5
HOME_CSC_OMC_TGY_N9600TGY1ARJ6_CL14505206_QB20159198_REV00_user_low_ship_MULTI_CERT.tar.md5
I want to know if i could flash the following files in odin and still have knox and other stuff intact?
AP_N9600ZHU1ARJ6_CL14505206_QB20159198_REV00_user_low_ship_MULTI_CERT_meta.tar.md5
BL_N9600ZHU1ARJ6_CL14505206_QB20159198_REV00_user_low_ship_MULTI_CERT.tar.md5
CP_N9600ZCU1ARJ6_CP10967940_CL14505206_QB20159196_REV00_user_low_ship_MULTI_CERT.tar.md5
CSC_OMC_OXM_N960FOXM2ARK2_CL14366801_QB20490073_REV00_user_low_ship.tar.md5
HOME_CSC_OMC_OXM_N960FOXM2ARK2_CL14366801_QB20490073_REV00_user_low_ship.tar.md5
If yes, which CSC should i choose in this scenario, Home_CSC or CSC_? I don't mind a factory reset.
The only thing i'm looking for is to have the CSC changed to a multi-CSC which is the OXM version without tripping Knox and Pay features.
Would the PIT file/partition entries be different in N960F and N9600?
I have noticed the .pit file in the extracted CSC files and they have the model numbers written in it when checked with np++.
Also, would this kind of an inconsistency trip knox?
Bump. Can someone please provide me any info.
As far as I know, there isnt a way to use Snapdragon CSC on Exynos without root, so you will be out of luck, also because CSC file is signed with Samsung key, so cannot flash your own without tripping Knox
abhishek.hitman said:
Hi All,
Can someone please guide me to a method, if any, to change the CSC of an N9600 model CSC which is currently TGY to INS?
This is to make VoLTE work via the phone dialer instead of using the external Jio4GVoice app.
Is this possible? I know my version is the snapdragon and the Indian version is Exynos 960F or 960FD.
I want to know if the CSC file is processor specific? Can 'only CSC' be flashed via ODIN? If yes, where can i find the CSC files with fast download?
Would it trigger Knox and disable Google/Samsung Pay?
Click to expand...
Click to collapse
hey, put your jio sim card in sim 1 and format the phone and start it again it will enable JIO VOLTE on your phone.
samkitshah108 said:
hey, put your jio sim card in sim 1 and format the phone and start it again it will enable JIO VOLTE on your phone.
Click to expand...
Click to collapse
Seriously? Have you tried this method? Do you have an n9600 as well?
N9600 does not have the csc for India in the firmware right, how would it work even if I format the phone again?
abhishek.hitman said:
Seriously? Have you tried this method? Do you have an n9600 as well?
N9600 does not have the csc for India in the firmware right, how would it work even if I format the phone again?
Click to expand...
Click to collapse
i also did it my S7 Edge when i was in Israel i installed european version of oreo and csc was not INS. so when i came india and put my jio sim card it does not work bcoz of csc issue. so i put my sim card in the phone and factory reset the device and boom it worked as when u reset the device automatically download and adapts the sim card setting of that country and my VOLTE was enabled. Yes i have N9600 512 GB from HK
samkitshah108 said:
i also did it my S7 Edge when i was in Israel i installed european version of oreo and csc was not INS. so when i came india and put my jio sim card it does not work bcoz of csc issue. so i put my sim card in the phone and factory reset the device and boom it worked as when u reset the device automatically download and adapts the sim card setting of that country and my VOLTE was enabled. Yes i have N9600 512 GB from HK
Click to expand...
Click to collapse
Cool. Awesome! I'll try to do that but I need to back up a lot of stuff from this phone before I do that.
I'll report back after I have something to update.
Anything else that I need tk make sure in the process of doing a factory reset?
abhishek.hitman said:
Cool. Awesome! I'll try to do that but I need to back up a lot of stuff from this phone before I do that.
I'll report back after I have something to update.
Anything else that I need tk make sure in the process of doing a factory reset?
Click to expand...
Click to collapse
i use samsung cloud to take backup of my phone. its so easy, i just click backup on my old phone and on new phone i put my samsung id and click restore, it restore my phone to same to same as my old device including home screen, settings, calls, messages, widgets, folder wise setting, just like a copy of my old phone installs apps and everything. Hope this will help you to same some time.
How i did Factory reset was first i put JIO sim in my phone and then go to setting and click factory reset, then my whole phone was reset and the again i factory reset my phone and everything incl VOLTE was working properly and now after the update u can have both the sim cards on 4G and now it support Dual VOLTE on the phone.
samkitshah108 said:
i use samsung cloud to take backup of my phone. its so easy, i just click backup on my old phone and on new phone i put my samsung id and click restore, it restore my phone to same to same as my old device including home screen, settings, calls, messages, widgets, folder wise setting, just like a copy of my old phone installs apps and everything. Hope this will help you to same some time.
How i did Factory reset was first i put JIO sim in my phone and then go to setting and click factory reset, then my whole phone was reset and the again i factory reset my phone and everything incl VOLTE was working properly and now after the update u can have both the sim cards on 4G and now it support Dual VOLTE on the phone.
Click to expand...
Click to collapse
I just tried the factory reset just as mentioned by you but i still am not able to enable VoLTE in my phone. Are you sure you have an N9600? Can you please tell me which firmware are you currently have? Mine is N9600ZHU1ARJ6.
Still getting the same error "VoLTE is not supported by your current software version. Contact customer services for more details"
Can you please tell me what i am doing wrong?
abhishek.hitman said:
I just tried the factory reset just as mentioned by you but i still am not able to enable VoLTE in my phone. Are you sure you have an N9600? Can you please tell me which firmware are you currently have? Mine is N9600ZHU1ARJ6.
Click to expand...
Click to collapse
My firmware is N9600ZHU1ARJ3 and u put JIO sim card in Sim 1 slot. if it does not come, again factory reset the phone with sim card in the phone.
samkitshah108 said:
My firmware is N9600ZHU1ARJ3 and u put JIO sim card in Sim 1 slot. if it does not come, again factory reset the phone with sim card in the phone.
Click to expand...
Click to collapse
Yes i did that and the sim is in slot 1 only i even removed the other sim from sim 2 slot. I did reset the phone twice like you mentioned in the previous post.
What could i be doing wrong? When you say you're able to enable VoLTE, you're not using the Jio4GVoice app for calling and all right?
abhishek.hitman said:
Yes i did that and the sim is in slot 1 only i even removed the other sim from sim 2 slot. I did reset the phone twice like you mentioned in the previous post.
What could i be doing wrong? When you say you're able to enable VoLTE, you're not using the Jio4GVoice app for calling and all right?
Click to expand...
Click to collapse
i dont know what is the problem in your phone and its not starting. May be you can ask samsung or JIO helpline customer care number and ask them about the issue.
samkitshah108 said:
i dont know what is the problem in your phone and its not starting. May be you can ask samsung or JIO helpline customer care number and ask them about the issue.
Click to expand...
Click to collapse
May i know your baseband version and build number please?
abhishek.hitman said:
May i know your baseband version and build number please?
Click to expand...
Click to collapse
baseband version N9600ZHU1ARJ3
build no. M1AJQ.N9600ZHU1ARJ3
samkitshah108 said:
baseband version N9600ZHU1ARJ3
build no. M1AJQ.N9600ZHU1ARJ3
Click to expand...
Click to collapse
ok this is a screenshot of my firmware version and other details.
Would you be kind enough to send me your phone firmware details using the phone info app?
abhishek.hitman said:
ok this is a screenshot of my firmware version and other details.
Would you be kind enough to send me your phone firmware details using the phone info app?
Click to expand...
Click to collapse
i have the same version and everything.
samkitshah108 said:
i have the same version and everything.
Click to expand...
Click to collapse
No i think you have the ARJ3 and i have the ARL3. i dont know if that makes a difference.
The thing is i'm unable to find a download for your firmware version N9600ZHU1ARJ3.
Can you please provide me a screenshot of the firmware page in Phone Info app from playstore?

Changing CSC to enable VoLTE and VoWIFI

Hi there,
I'm about to order a Galaxy S10 directly from Samsung since they are way cheaper than what my carrier sell them. But, when I do my carrier tells me that VoLTE and VoWIFI will not work on Android phone bought from other than the one they sell...
I've read a little bit and it seems that I'd have to change the CSC of the phone, I've chatted with samkey about the particular model and it's not supported, because of bit 4 or something like that. Anyways, I've downloaded samfirm and found the firmware for my provider "VTR" but it seems that all firmwares from any provider in Canada share the same thing because what is getting downloaded is a "VLS" and the CSC one is "OYV"
=>> BL_G973WVLS4DTF6_CL18725736_QB32639380_REV00_user_low_ship_MULTI_CERT.tar.md5
=>> AP_G973WVLS4DTF6_CL18725736_QB32639380_REV00_user_low_ship_MULTI_CERT_meta_OS10.tar.md5
=>> CP_G973WVLS4DTF6_CP16240011_CL18725736_QB32639380_REV00_user_low_ship_MULTI_CERT.tar.md5
=>> HOME_CSC_OMC_OYV_G973WOYV4DTF6_CL18725736_QB32639380_REV00_user_low_ship_MULTI_CERT.tar.md5
=>> CSC_OMC_OYV_G973WOYV4DTF6_CL18725736_QB32639380_REV00_user_low_ship_MULTI_CERT.tar.md5
I need advise to modify the firmware or options in my new phone to make it look like it's coming from my provider (Videotron) and when I insert the SIM (with NFC+VoLTE) in it I have a chance that the option will be available.
I'm an IT Specialist, I've flashed my old S7 with those files before with no luck. It's the same story with the S7, bought from Samsung, initialized with an other provider SIM though. Then flashed the phone with my provider CSC got a proper SIM card and I had them enable VoLTE on my line, but the option never showed up. I'd like to be able to enable it on my new phone, that's why I'm doing research before getting my hands on it.
Can't you just download the video tron firmware and flash it to the phone with Odin?
StoneyJSG said:
Can't you just download the video tron firmware and flash it to the phone with Odin?
Click to expand...
Click to collapse
I sure can, just wondering if it's gonna work since last time I did that on my S7 it didn't work.
I downloaded the firmware using SamFirm v0.5.0 for 2 providers, VTR (Videotron) and RWC (Rogers) two very different providers and I compared the two CSC files using sha256 and they are both identical (I didn't test the big 5G files though, but they have the same exact file size). So I'm wondering if I'm even downloading the right thing now. It's probably multi CSC. Then does the stock Canadian Samsung firmware the same as the one I'm downloading?
It should tell you on sam firm what firmware you need to download or if you're running the current stock firmware, then just look in settings to see what base band you're on and go from there. I wouldn't flash rogers if you have another carrier, that may cause some issues.
StoneyJSG said:
It should tell you on sam firm what firmware you need to download or if you're running the current stock firmware, then just look in settings to see what base band you're on and go from there. I wouldn't flash rogers if you have another carrier, that may cause some issues.
Click to expand...
Click to collapse
Thanks I'll look into it a little more when I actually receive the new phone from Samsung. I wasn't going to flash a Rogers firmware, I downloaded it to do a compare and check to see if they actually are identical to VTR ones and they seem to be identical, at least the CSC files are.
many folks have found that buying direct from samsung doesn't guarantee the phone will work.
several on xfinity mobile found out the hard way.

Question Change CSC S21 ultra

Hello any solution to change csc on s21 ultra? Samkey not work
it seems there is no way curently
I did this method and it worked https://androidmore.com/change-csc-samsung/
I have a s21 ultra exynos , and a unlock phone , global version
I installed the AUT update via odin and the csc was TPA , so i did the method on the link to change to AUT and it worked but it deleted everything
but what about Carrier blotware?
Jpablo67 said:
I did this method and it worked https://androidmore.com/change-csc-samsung/
I have a s21 ultra exynos , and a unlock phone , global version
I installed the AUT update via odin and the csc was TPA , so i did the method on the link to change to AUT and it worked but it deleted everything
Click to expand...
Click to collapse
Hmmm, it says invalid MMI code whenever I try it.
Jpablo67 said:
I did this method and it worked https://androidmore.com/change-csc-samsung/
I have a s21 ultra exynos , and a unlock phone , global version
I installed the AUT update via odin and the csc was TPA , so i did the method on the link to change to AUT and it worked but it deleted everything
Click to expand...
Click to collapse
Which step on the link did you exactly do? There are many options.
Any update on this? I have S21 Ultra with TPA and I want to change the CSC to BTU. I am in Canada and I hope this will help with faster updates. Also I am having problems with slow 4G uploads, and faster updates might be the solution.
Thank you..
elena11 said:
Any update on this? I have S21 Ultra with TPA and I want to change the CSC to BTU. I am in Canada and I hope this will help with faster updates. Also I am having problems with slow 4G uploads, and faster updates might be the solution.
Thank you..
Click to expand...
Click to collapse
If your device is SD then you won't be able to get BTU.
If it is exynos then you can flash the BTU firmware.
Your 4g speeds may be slow if you do not have the correct csc files for your provider. Eg: having BTU for Rogers may not get your the speeds you are looking for.
Techvir said:
If your device is SD then you won't be able to get BTU.
If it is exynos then you can flash the BTU firmware.
Your 4g speeds may be slow if you do not have the correct csc files for your provider. Eg: having BTU for Rogers may not get your the speeds you are looking for.
Click to expand...
Click to collapse
I have Exynos device. If I do Canadian CSC on Exynos S21 Ultra, will I have better 4G in Canada?
Thank you.
@carlitobahsoun
March Update is out for S21 Ultra xid CSC . So if I want call recording I just have to flash xid home_csc right?
iamnotkurtcobain said:
@carlitobahsoun
March Update is out for S21 Ultra xid CSC . So if I want call recording I just have to flash xid home_csc right?
Click to expand...
Click to collapse
yup , i only flashed home csc , no wipe sure , other poeple on Russian forum flashed full 4 files / for me from first open box was downloaded xid full firmware and once get my s21 ultra i flashed only home csc .
i got march patch now ota and will install now
my out of box csc was MID/MID/MID/XSG
now its XID/XID/XID/XSG
and OTA received well
**in case AFTER FLASH AND REBOOT a pop up appear asking u keep curent or back to sim card detected : SELECT KEEP CURENT.
@carlitobahsoun
Is there another way than samkey to change my DBT CSC to ATO? voLTE isn't working with my simcard if I don't have ATO as CSC :/
iamnotkurtcobain said:
@carlitobahsoun
Is there another way than samkey to change my DBT CSC to ATO? voLTE isn't working with my simcard if I don't have ATO as CSC :/
Click to expand...
Click to collapse
till now , only samkey .....
i dont have volte in my country , no 5g in my country , no google pay in my country , no samsung pay in my country , no PayPal in my country , no paid app or watchface appears in galaxy store in my country , bad bad bad .
I used the link in this tread and I selected BTU, but I did not pay attention that it was mentioned that is Single. Now I have BTU, but I have some problems receiving SMS and I cannot go back to TPA. When I try *#272* IMEI# it does not do anything. Any idea what I have to do to go back to Dual SIM?
elena11 said:
I have Exynos device. If I do Canadian CSC on Exynos S21 Ultra, will I have better 4G in Canada?
Thank you.
Click to expand...
Click to collapse
You will not be able flash Canadian CSC on an exynos device.
First you have to root the device and Either you or some else will have to edit the canadian csc file to make it compatible wtih exynos.
Some one has done for me in the past with note 8 but that dev is no longer in XDA.
The other option is to root and then copy the required csc files.
With this there is a high chance that the imeir related files can get corrupted.
elena11 said:
I used the link in this tread and I selected BTU, but I did not pay attention that it was mentioned that is Single. Now I have BTU, but I have some problems receiving SMS and I cannot go back to TPA. When I try *#272* IMEI# it does not do anything. Any idea what I have to do to go back to Dual SIM?
Click to expand...
Click to collapse
You can flash any other file with multicsc.
There is no reason for you not recieve sms with BTU csc. However, if it does happen fhe csc firmware that is the original one. i.e look at the third tri letter in the csc info.(this third letter never changes , more like hard coded)
I do get SMSs but, I was not able to get one from my bank. The 3rd 3 letters are still TPA. I do not know if it is normal, but the dual sim menu has much fewer options. I can choose from what sim to call only after I dial at least one digit. And When I try to activate Dual sim always on, the toggle still stays off.
For the Canadian CSC, I suspected that it will be impossible to flash. I used to be on TPA and now I am on BTU, I had problems slow upload speed on 4G. Now is a bit better, but the download is staying around 50-75. before I had 160-300 Mbps.
Where I can get Multicsc and do I have to root the phone?
Thank you.
elena11 said:
I do get SMSs but, I was not able to get one from my bank. The 3rd 3 letters are still TPA. I do not know if it is normal, but the dual sim menu has much fewer options. I can choose from what sim to call only after I dial at least one digit. And When I try to activate Dual sim always on, the toggle still stays off.
For the Canadian CSC, I suspected that it will be impossible to flash. I used to be on TPA and now I am on BTU, I had problems slow upload speed on 4G. Now is a bit better, but the download is staying around 50-75. before I had 160-300 Mbps.
Where I can get Multicsc and do I have to root the phone?
Thank you.
Click to expand...
Click to collapse
Rooting won't help you much with signal or speed of data, unless you have to flash some modified csc files.
Your problem could also be the absence of the required bands,whuch may be lacking in exynos.
I have a SD version ( decided to go wtih non root this time as most of the things that need root can be done with adb anyways. Also there is root for SD too these days) so cannot help you much.
Techvir said:
Rooting won't help you much with signal or speed of data, unless you have to flash some modified csc files.
Your problem could also be the absence of the required bands,whuch may be lacking in exynos.
I have a SD version ( decided to go wtih non root this time as most of the things that need root can be done with adb anyways. Also there is root for SD too these days) so cannot help you much.
Click to expand...
Click to collapse
I am missing only one band, and this is not a problem. B29 in LTE. Al the rest are there. My question was more like is it normally to loose t some fucntciuts of Dual sim manager and and is there an easy way to change back and forth CSC without rooting. I do not want to root. Thank. you
elena11 said:
I am missing only one band, and this is not a problem. B29 in LTE. Al the rest are there. My question was more like is it normally to loose t some fucntciuts of Dual sim manager and and is there an easy way to change back and forth CSC without rooting. I do not want to root. Thank. you
Click to expand...
Click to collapse
Chainging csc is easy by flashing the CSC file. Rooting won't affect it. Rooting has its downsides.
Your loss of dual sim fn could be related to csc but BTU should support full dual sim fn.

[Guide] How to convert s10-g973N to sm-g973f, change csc from skc to koo or any another, fix emergency calls only. No need of paid apps, boxes etc.

**********This is first time am posting a guide so pardon me. *******
********As usual am not responsible for anything that happens to your phone.*******
*****Am not claiming ownership of the above technique, its what worked for me*****
I saw many posts here about people struggling to change csc from skc to koo or international***
Others had issue with their phone suddenly lost network and just displays emergency calls only****
so I have s10 sm-g973n which had csc as koo then flashed skc my mistake. The phone booted with annoying skc boot logo, and branded junk from the carrier. Then one morning the phone couldn't connect to gsm network!
I tried all manner of things to fix it. Rooted with magisk, flashed custom rom nothing.
Tried samkey to change csc still nothing. modified odin in flashing multi csc rom nothing.
Got some luck in changing csc by editing efs/imei/mps_code.dat using root explorer, text editor and vola the carrier junk disappeared. But still no network.
was told only way is to use z3x box or chimera to patch certificate but didn't give up. I posted question here in xda but no guide or response.
But that gave me an idea of what could be the issue- corrupt efs that needs the certificate to be patched. so got keyword.
After watching many YouTube videos I came across a video about a rom that has certificate patched. Just flash with odin and done!
I downloaded and followed the instructions. The phone booted up fine and after going through initial setup the network was back!
Not only did the network came back but the model changed to F, csc became oxm! You can now use tools like Samfw from too to change csc to your local region.
Later in the day, will be flashing firmware with my region csc.
Here is the link to the rom:
https://mega.nz/file/LLpDQJQS#HP6h9qrPWseyHR66s9ClgxjBdekzc4fHLqs8UlDJIM4
And here is the video:
Thanks for your post. I think before do it we need back up all anything
When we upload this rom to my phone, can my SIM 2 work normally ? Because i saw 2 IMEI in setting bro ? Thanks
sanguine9x said:
Thanks for your post. I think before do it we need back up all anything
Click to expand...
Click to collapse
Yes absolutely. Thanks for the reminder.
sanguine9x said:
When we upload this rom to my phone, can my SIM 2 work normally ? Because i saw 2 IMEI in setting bro ? Thanks
Click to expand...
Click to collapse
Yes sim 2 will work. And after completing flash stock rom for security reasons. Because the above rom is rooted and modified we don't know how secure it is. after network certificates are patched now flash a stock rom from eg sammobile or samfw etc.
When i flash this file the storage becomes 64gb
Hey bro have u found any android 12 rom for g973N ???
w
Bashir22 said:
Yes sim 2 will work. And after completing flash stock rom for security reasons. Because the above rom is rooted and modified we don't know how secure it is. after network certificates are patched now flash a stock rom from eg sammobile or samfw at will the
Click to expand...
Click to collapse
Bashir22 said:
Yes sim 2 will work. And after completing flash stock rom for security reasons. Because the above rom is rooted and modified we don't know how secure it is. after network certificates are patched now flash a stock rom from eg sammobile or samfw etc.
Click to expand...
Click to collapse
will the network work after returning to stock rom bro ?
Zuzillk said:
When i flash this file the storage becomes 64gb
Click to expand...
Click to collapse
Did you find a fix for that? For me the internal memory become 32Gb. Is there a solution for that?
I bought an S10 that turned out to be a G973N(SKC) flashed to G973F-D/S(XSG). I think they used this method and these files to do it. I can't get the OEM unlock option to come up. I've tried everything. I am starting to think that it's because of the XSG country code. I was going to try to change it XEU (Great Britain) in SamFW but it just stalls and doesn't do anything. Any suggestions on what I can do here to change the country code? I need that OEM unlock option so I can degoogle it.
Hi guys,
I have I big problem with this rom man, each time I restart my phone i lost network and I have to reflash your rom and factory reset the phone to get it back. It's like it's forbidden to restart the phone, otherwise my network get lost and IMEI Status NG again.. Is there a fix for that? Thank you. Is there a for that fix?
Or do you guys have a rom based on android 12 for g973n u7 converted to dual sim that can solve this IMei STATUS NG? I watched on youtube some guys that have it but it's not free or I can't pay that from here in my cluntry the poorest country in the world.
Thank you guys.

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