Back to stock from kernel v. 8? - Samsung Galaxy S7 Questions and Answers

Hello all,
It is possible to go back to stock Samsung from Android 10.0? Whenever I try to flash the software via Odin I am met with a rev. fail device 8 kernel 2 error.

You are trying to flash a very old firmware on your device which has a recently updated bootloader, you can only flash the same firmware as the bootloader, or a more recent.
You can't downgrade, at least not to v2.

Related

Odin flash failed, device 3, binary 2. Help needed!

Hi,
I have a G920F, I was rooted and want to go to stock again. I have restored the device with Smart Switch, but now I am unable to flash any other rom. I have downloaded 3 different roms from Sammobile and get sw. check failed device 3 binary 2 at everyone. The current rom is form Italy Wind the latest OI9. Any suggestions?
Thanks in advance.
Hi, probably you trying to install oldest firmware 5.0.1, download the latest firmware and try again. You are with 5.1, right? This error on odin happens, because you cannot downgrade the firmware. Hope this helps.
I think you can not downgrade even if it is the same Android version.
If it detects you are on a newer bootloader it will give you that error.
What I belive you can do is to extract the bootloader (sboot) and modem from the .tar file and flash ONLY the system through Odin.
Don't know exactly how to do that because I haven't done it but I think that would do; you will have to search and read my friend.
You will have the stock firmware but with latest bootloader and modem.
Hope this helps.
Note: As far as I know this will work if its the same Andorid version; you can not have Android 5.0.2 with 5.1.1 bootloader.
jpdediego said:
I think you can not downgrade even if it is the same Android version.
If it detects you are on a newer bootloader it will give you that error.
What I belive you can do is to extract the bootloader (sboot) and modem from the .tar file and flash ONLY the system through Odin.
Don't know exactly how to do that because I haven't done it but I think that would do; you will have to search and read my friend.
You will have the stock firmware but with latest bootloader and modem.
Hope this helps.
Note: As far as I know this will work if its the same Andorid version; you can not have Android 5.0.2 with 5.1.1 bootloader.
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Click to collapse
Hi,
I have tried what you said, but no succes. The firmware was already recovered with smart switch so the bootloader is the latest.
raj_p said:
Hi,
I have tried what you said, but no succes. The firmware was already recovered with smart switch so the bootloader is the latest.
Click to expand...
Click to collapse
But did you try to flash without the bootloader and modem?

Soft Bricked sm-g920f

Hi, I was running the latest noble rom (3,1) but I wanted to go back to stock samsung firmware. I downloaded and flashed a 6.0.1 firmware for the UK. When i was trying to flash it I got a error an now it wont boot. I get the error " Check device: 4, Binary: 3". I can get in to download mode but im not sure what firmware to flash
kLN93 said:
Hi, I was running the latest noble rom (3,1) but I wanted to go back to stock samsung firmware. I downloaded and flashed a 6.0.1 firmware for the UK. When i was trying to flash it I got a error an now it wont boot. I get the error " Check device: 4, Binary: 3". I can get in to download mode but im not sure what firmware to flash
Click to expand...
Click to collapse
Use the firmware for your region, e.g. country of issue and figure out the region code e.g. XFA, XFE, etc.
Ok so I had the same problem as you. When you get this error in download mode, it's because you can't downgrade your bootloader.
The version of TW you're trying to flash has an older bootloader than the bootloader you have already install.
You need to flash the latest version of TW. You can find it on Sammobile or with the soft Samfirm.

Downgrading U5 to U2 or U1 on G930F

I have a galaxy s7 SM-G930F which is currently on U5 Oreo Firmware, i wanted to downgrade it to Nougat U2, tried flashing it with Odin 3.13.1 , the flash failed and i ran into an SW REV error (Device:5, Binary:2), tried several fixed but no solution .
i have 3 questions:
1. is it even possible to downgrade from U5 to U2 (i assume the answer is no but i need confirmation)
2. is it possible to install a custom rom with TWRP that is based on U2 (if yes - how, if not - why)
3.when flashing stock firmware i read that the bootloader version of the firmware must match the current bootloader version, how do i check my current bootloader version and the downloaded firmware bootloader version?
LSGio said:
I have a galaxy s7 SM-G930F which is currently on U5 Oreo Firmware, i wanted to downgrade it to Nougat U2, tried flashing it with Odin 3.13.1 , the flash failed and i ran into an SW REV error (Device:5, Binary:2), tried several fixed but no solution .
i have 3 questions:
1. is it even possible to downgrade from U5 to U2 (i assume the answer is no but i need confirmation)
2. is it possible to install a custom rom with TWRP that is based on U2 (if yes - how, if not - why)
3.when flashing stock firmware i read that the bootloader version of the firmware must match the current bootloader version, how do i check my current bootloader version and the downloaded firmware bootloader version?
Click to expand...
Click to collapse
1. No it is not, once a bootloader is updated it cannot be downgraded
2. No not anymore since S6 because boot files reside on the EFS partition which is not altered when new firmware is flashed. The boot program is written to only allow upgrades to it, never downgrades (thats the easiest way to explain it.) The primary reason for firmware and thus bootloader upgrades is due to security vulnerabilities.
3. It only has to match or be higher. Within the firmware itself the bootloader version is represented by either the letter U or S, for example G930FXXU5ESD2. = U5, firmware is on bootloader version 5. It could have read S5, it would mean the same thing.
In the settings of your phone, tap >about phone>software infomation>baseband version G930FXX......
u6 bootable factory binary for g930f
Hello my wiz kids friends does any 1 have the u6 bootable combination firmware to share please

Trying to downgrade from 7.0 (3/2018) to 6.0.1 (2/2017), Odin not working

Hi, I'm trying to downgrade from 7.0 to 6.0.1. Odin keeps failing.
When Odin fails (after NAND write start), I see an error pop up on the Download mode screen (red letters):
SW REV. CHECK FAIL. DEVICE: 6, BINARY: 5
Tried different versions of Odin, and made sure I had a good copy of the right version of firmware from Sammobile.
Any idea if it's possible? Is there another way to do this besides Odin? Phone is not rooted, stock, Knox intact.
I've been off Samsung for a few years, and my memory is spotty... but would it help if I installed a Recovery, then flashed a custom 6.0.1 rom? Or is that also a problem?
Thanks for any help!
Mike
resarfekim said:
Hi, I'm trying to downgrade from 7.0 to 6.0.1. Odin keeps failing.
When Odin fails (after NAND write start), I see an error pop up on the Download mode screen (red letters):
SW REV. CHECK FAIL. DEVICE: 6, BINARY: 5
Tried different versions of Odin, and made sure I had a good copy of the right version of firmware from Sammobile.
Any idea if it's possible? Is there another way to do this besides Odin? Phone is not rooted, stock, Knox intact.
I've been off Samsung for a few years, and my memory is spotty... but would it help if I installed a Recovery, then flashed a custom 6.0.1 rom? Or is that also a problem?
Thanks for any help!
Mike
Click to expand...
Click to collapse
the failure message is saying that your phone has a version 6 bootloader and youre trying to flash a version 5 bootloader. you cant downgrade from 6 to 5. sorry mate, nothin' doin'

Samsung Galaxy A41 downgrade

Hello I have A41 (SM-A415F) with last Android 12.
I like to downgrade to android 10.
I tried Odin but I get error SW rev check fail (boot) fused:2 -> binary: 2
and the phone briched until I restore last FW with Odin.
I unlocked boot loader but the same appened and when I replace last firmware boot loader locks again
Anyone can help?
Thanks in advance
Anyone can help? I unlock bootloader but is not still possible flash old firmware (I think due to fused sw version)
Are any custom rom available for this device? Or at least I can installa another offiial rom with less blootware?
Read to remove these bloatwares
: https://us.norton.com/blog/online-scams/bloatware#
There is no custom rom for you device to date. Please, read the post above.
The problem is that you are using an old firmware. Your phone is up-to-date. I think the only solution is to unistall the bloatwares.

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