I am on dec 12 android 10 update right now. I've always wanted to try an early version of android 9 to check some different display qualities. But it obviously has older bootloader version. İf i install twrp, can i flash an update with older bootloader?
-Im rooted with magisk
theblitz707 said:
I am on dec 12 android 10 update right now. I've always wanted to try an early version of android 9 to check some different display qualities. But it obviously has older bootloader version. İf i install twrp, can i flash an update with older bootloader?
-Im rooted with magisk
Click to expand...
Click to collapse
No. Samsung won't allow you to flash lower bootloader version numbers firmware.
spawnlives said:
No. Sansung won't allow you to flash lower bootloader version numbers firmware.
Click to expand...
Click to collapse
Can I downgrade the Samsung Bootloader from SW Rev 3 to 2?
Hi, I want to downgrade my SM-A310F to earlier Android versions, but Odin blocks this with the Error: "SW REV. CHECK FAIL. DEVICE: 3. BINARY: 2." So apparently I can only install firmware files which come with the same Bootloader I'm currently...
forum.xda-developers.com
i saw this and thought maybe its possible
theblitz707 said:
Can I downgrade the Samsung Bootloader from SW Rev 3 to 2?
Hi, I want to downgrade my SM-A310F to earlier Android versions, but Odin blocks this with the Error: "SW REV. CHECK FAIL. DEVICE: 3. BINARY: 2." So apparently I can only install firmware files which come with the same Bootloader I'm currently...
forum.xda-developers.com
i saw this and thought maybe its possible
Click to expand...
Click to collapse
I have seen a few posts on downgrading OS version. They have been on older android version nothing on recent versions. I have not tried any methods to downgrade as most methods i've read there can be issues with doing so (if it works at all) in regards to something not working properly . Also all the methods i've seen don't downgrade you bootloader version.
Related
Hello, I cannot downgrade to Nougat, I keep getting "Sw Rev Check Fail Device 2 Binary 1" on the phone side and ODIN simply says failed. When I try to downgrade from Oreo to Nougat. I have not been able to enable "OEM Unlock".
BTW, Sorry for incomplete title as the title bar disappears and I can only type a little bit.
Kenchinito said:
Hello, I cannot downgrade to Nougat, I keep getting "Sw Rev Check Fail Device 2 Binary 1" on the phone side and ODIN simply says failed. When I try to downgrade from Oreo to Nougat. I have not been able to enable "OEM Unlock".
BTW, Sorry for incomplete title as the title bar disappears and I can only type a little bit.
Click to expand...
Click to collapse
What model do you have? And what firmware version were you on before trying to downgrade? Some firmwares include bootloader updates which cannot be rolled back.
I have a N950F and this is the Oreo image I succesfully flashed "BL_N950FXXU3CRC1_CL13094739_QB17155977_REV00_user_low_ship.tar"
I can flash "COMBINATION_FA71_N950FXXU3ARA5" without a problem which is 7.1.1 But I think it's the bootloader that is giving me issues and since the combination file doesn't include a bootloader (AFAIK) it goes through, but when I try to put in any bootloader from Nougat, the flash fails.
I tried flashing:
-BL_N950FXXU1AQI1_CL12007350_QB14830234_REV00_user_low_ship.tar
-BL_N950FXXU1AQHB_CL12007350_QB14652984_REV00_user_low_ship.tar
and both failed. It's important to note that I'm trying to flash the whole thing, not just the "BL" file. I just pasted the BL file name because I think it holds the information you need.
Ok thanks for providing the info. One more question, what Odin version are you using?
It is not possible to downgrade.
sefrcoko said:
Ok thanks for providing the info. One more question, what Odin version are you using?
Click to expand...
Click to collapse
3.13.1
I have a similar problem. Bought my N950F in Panama but I'd like to change to Brazil's ZTO(unbranded) to be able to use Samsung Pay there.
I got Odin 3.13.1 and the ROM N950FXXU3CRDF_N950FOXM3CRE4_ZTO (latest 8.0.0) from SamMobile. When I try to flash I get the "Check Fail BOOTLOADER" message. Trying to uncheck the BL, I get another error but also not able to flash. Maybe my phone has a newer version that doesn't allow it to in theory "downgrade"?
Any solution?
carlosedp said:
I have a similar problem. Bought my N950F in Panama but I'd like to change to Brazil's ZTO(unbranded) to be able to use Samsung Pay there.
I got Odin 3.13.1 and the ROM N950FXXU3CRDF_N950FOXM3CRE4_ZTO (latest 8.0.0) from SamMobile. When I try to flash I get the "Check Fail BOOTLOADER" message. Trying to uncheck the BL, I get another error but also not able to flash. Maybe my phone has a newer version that doesn't allow it to in theory "downgrade"?
Any solution?
Click to expand...
Click to collapse
Yes some bootloaders can't be downgraded to earlier ones. What firmware version are you coming from?
sefrcoko said:
Yes some bootloaders can't be downgraded to earlier ones. What firmware version are you coming from?
Click to expand...
Click to collapse
@sefrcoko, I'm currently on Android 8.0.0, Baseband N950FXXU4CRG8, Build number R16NW.N950FXXU4CRGA.
I don't know if this is older or newer than the one I'm trying to flash. Is there a way to do it?
Thanks!
carlosedp said:
@sefrcoko, I'm currently on Android 8.0.0, Baseband N950FXXU4CRG8, Build number R16NW.N950FXXU4CRGA.
I don't know if this is older or newer than the one I'm trying to flash. Is there a way to do it?
Thanks!
Click to expand...
Click to collapse
Hi, yes you are on the "U4" bootloader and trying to downgrade to the "U3" bootloader (look at those characters in the build numbers, that's the bootloader version). Can't downgrade from u4 to u3 though.
sefrcoko said:
Hi, yes you are on the "U4" bootloader and trying to downgrade to the "U3" bootloader (look at those characters in the build numbers, that's the bootloader version). Can't downgrade from u4 to u3 though.
Click to expand...
Click to collapse
@sefrcoko this build number can bootloader unlock? i have same build number, i plan to unlock bootloader
paroys said:
@sefrcoko this build number can bootloader unlock? i have same build number, i plan to unlock bootloader
Click to expand...
Click to collapse
The Exynos models are all bootloader unlocked as far as I know.
sefrcoko said:
The Exynos models are all bootloader unlocked as far as I know.
Click to expand...
Click to collapse
Thanks , I'm already rooted haha:cyclops:
Can I flash everything except the bootloader? Will it work?
Do I have any option?
Thanks!
Hello, I have my note 9 exynos version (country:XSG) Running one Ui (CSFA) Which have bootloader version 3. Now i want to downgrade to oreo (ARL4) which has bootloader version 2. While flashing via odin i had the error “sw rev check fail bootloader device 3 binary 2”.
Any guide/tips will be greatly appreciated. Please ask me for any further information required.
Can't be done
AAoptimized said:
Hello, I have my note 9 exynos version (country:XSG) Running one Ui (CSFA) Which have bootloader version 3. Now i want to downgrade to oreo (ARL4) which has bootloader version 2. While flashing via odin i had the error “sw rev check fail bootloader device 3 binary 2”.
Any guide/tips will be greatly appreciated. Please ask me for any further information required.
Click to expand...
Click to collapse
search and read. especially about downgrading the bootloader
I believe, if you have bootloader version 3 it's not possible to downgrade. I have downgraded international unlocked Note 9 back to ARL4 version back in January. There is a huge discussion here on xda how to do it, but unfortunately I think it can't be done in your case.
I just bought a T-719Y off eBay, and it comes with Nougat installed out of the box despite the description saying it is Marshmallow.
I have tried simply downgrading the device with Odin using a .md5 for my specific device. However, the Tab shows an error saying
[aboot]Fused 3 > Binary 1
Click to expand...
Click to collapse
I assume this is because the bootloader for Nougat is newer than Marshmallow.
Is there anyway to downgrade the bootloader itself? Or am I mistaken about this assumption? Searches on downgrading this device seem to imply that flashing the file with ODIN is enough. Is an unlocked bootloader necessary for a downgrade?
Thanks for the help!
When I try downgrade android system from 11 to 10 on Samsung SM-G-780F, I get on phone message: SW REV. CHECK FALI ( BOOTLOADER) DEVICE:0x5, BINARY: 0x1.
Odin try to load vbmeta.img.
Do you have any idea, how solve this problem?
Flash Android 11
nunein said:
Flash Android 11
Click to expand...
Click to collapse
What you mean? I try to load by Odin android 10 version G780FXXU1ATJ1, but when Odin load vbmeta.img file, the phone get this message. SW REV. CHECK FALI ( BOOTLOADER) DEVICE:0x5, BINARY: 0x1.
How can I fix it?
If you already have Android 11 installed you can't downgrade to Android 10. Therefore you have to flash a recent Android 11 firmware.
How can I do? I try to use a Odin and android 10 version https://samfw.com/firmware/SM-G780F/XEO/G780FXXU1ATI9.
But, I always get on phone in download mode a infromation
SW REV. CHECK FALI ( BOOTLOADER) DEVICE:0x5, BINARY: 0x1.
you can't downgrade like that anymore
3mel said:
you can't downgrade like that anymore
Click to expand...
Click to collapse
Do you have any solution? Is there any posibility?
jozek2546 said:
Do you have any solution? Is there any posibility?
Click to expand...
Click to collapse
no solution, we're all limited to flashing roms with the same bootloader version. dropping to the immediately previous update might be possible, different android versions isn't gonna happen.
3mel said:
no solution, we're all limited to flashing roms with the same bootloader version. dropping to the immediately previous update might be possible, different android versions isn't gonna happen.
Click to expand...
Click to collapse
Ok, i understand that, but i can change the region of the Rom, because i have a ZTO (brazil) but i want back to my room (GTO Guatemala) but the latest version of GTO is G780FXXS6CUI2 and ZTO version is G780FXXS6CUI2
search all the other threads here about changing CSC.
Hi ; my device is G975F Exynos and Original CSC is NEE. İ am on Android 11 Firmware which is G975FXXSEFUJ2.
i plan to go back to Android 10. i do not know my device's bootloader is unlocked or not. And also do not know is it available for bootloader unlocked or not.
What shall i do ? is it possible to go back to Android 10 for this device safely ?
I'm telling my own experience with my G973F, short answer: no
My phone has a unlocked bootloader and i have TWRP, i mistakenly flashed a wrong (lower) bootloader version, and my phone didn't boot anymore, i was only able to recover using download mode.
Older android versions have older bootloader, if you manage to install an older bootloader you phone will only give a message in the top of the screen saying something like "SYSTEM REV. CHECK FAIL DEVICE 8 BINARY 7"
You can only install a lower android version if that android rom works with your current installed bootloader