Database Info

Failed Downgrading J700F

Hi all. I have Samsung Galaxy J7 2015 (SM-J700F). I just received the recent update (April 2017). However, I don't like it and want to downgrade to the previous one. I have downloaded Odin and the firmware which is J700FXXU2BPH3_J700FOLB2BPH2_XID or whatever you call it. It failed after trying to execute cm.bin file. I have done some research and I found that Samsung has locked the bootloader in order to prevent downgrading process. However, in those threads, they only mentioned about downgrading from Android 6 to Android 5. In my case, I just want to downgrade from the previous security update/patch in the same Android version which is Android 6. Is this still possible in my case to do downgrading to my desired version?

Samsung locks older bootloaders from being flashed. It is possible to downgrade the OS without downgrading the bootloader by just flashing all the .tar.md5 files in Odin EXCEPT for the "BL" one since that one is the bootloader. Good luck friend

NullaVisus said:
Samsung locks older bootloaders from being flashed. It is possible to downgrade the OS without downgrading the bootloader by just flashing all the .tar.md5 files in Odin EXCEPT for the "BL" one since that one is the bootloader. Good luck friend
Click to expand...
Click to collapse
Thanks for your reply. What do you mean by "BL"? I am new on this Odin thing.

alphamorpho said:
Thanks for your reply. What do you mean by "BL"? I am new on this Odin thing.
Click to expand...
Click to collapse
See attached picture. Your stock ROM should be a zip containing multiple files. ending in ".tar.md5" and beginning with "BL, AP, CP, and CSC" respectively. You just add and check all of the appropriate files EXCEPT for "BL"

NullaVisus said:
See attached picture. Your stock ROM should be a zip containing multiple files. ending in ".tar.md5" and beginning with "BL, AP, CP, and CSC" respectively. You just add and check all of the appropriate files EXCEPT for "BL"
Click to expand...
Click to collapse
My zip file only contains 1 file. And from the tutorial I have watched it belongs to AP section. But, I have resolved this problem by removing 3 files, sboot.bin, cm.bin & modem.bin.

Downgrade to earlier patch

Hello, i would to ask about how to downgrade to the earlier version of the stock ROM
I already download the correct country code, variant and everything else but when i click start in Odin
It says that cm.bin fail and the process is canceled, how to fix this issue?
Thanks a lot
SM-A750GN with XID country code, here is the firmware that i use https://www.sammobile.com/firmwares/galaxy-a7/SM-A750GN/XID/download/A750GNDXU1ARIE/241618/
and this is my device firmware now A750GNDXU2ASB4
or is it not possible to downgrade? any help around this as to not void my warranty if possible

There could be a couple of things:
1. You could be using an outdated version of Odin
2. You need to re-download the firmware, try searching updato for your firmware
3. Maybe the current/latest version of the firmware installed on your phone locks your boot loader to the current version (binary version matches the boot loader)and that is why you can't downgrade
What you could try (definitely at your OWN risk) because if things go wrong you can end up with an expensive paper weight:
1. Unpack the firmware with 7zip, remove the file (cm.bin) then repack to tar with 7zip
2. You can try to flash just the AP and CSC

rubenswing said:
There could be a couple of things:
1. You could be using an outdated version of Odin
2. You need to re-download the firmware, try searching updato for your firmware
3. Maybe the current/latest version of the firmware installed on your phone locks your boot loader to the current version (binary version matches the boot loader)and that is why you can't downgrade
What you could try (definitely at your OWN risk) because if things go wrong you can end up with an expensive paper weight:
1. Unpack the firmware with 7zip, remove the file (cm.bin) then repack to tar with 7zip
2. You can try to flash just the AP and CSC
Click to expand...
Click to collapse
Does it works for gn user? Any one try it?

I've tried to downgrade my SM-A750GN via odin software, but fails cm.bin and parameter.bin.
AP and CSC only to flash, it's not work at all.
How about flashing the oreo firmware with TWRP, does any one have tried it?

fr4n.4rdi said:
I've tried to downgrade my SM-A750GN via odin software, but fails cm.bin and parameter.bin.
AP and CSC only to flash, it's not work at all.
How about flashing the oreo firmware with TWRP, does any one have tried it?
Click to expand...
Click to collapse
You can't downgrade because the bootloader is protected by Rollback Prevention, the only way (maybe) to use Oreo is to flash TWRP and wipe system data and use any custom Oreo ROM.
If you want to know about Rollback Prevention then there is a attached pdf from the Samsung Technical documentation

rubenswing said:
You can't downgrade because the bootloader is protected by Rollback Prevention, the only way (maybe) to use Oreo is to flash TWRP and wipe system data and use any custom Oreo ROM.
If you want to know about Rollback Prevention then there is a attached pdf from the Samsung Technical documentation
Click to expand...
Click to collapse
Can you please give me a link to download any oreo custom rom for my sm-a750 gn.
Thank you for reply..

fr4n.4rdi said:
Can you please give me a link to download any oreo custom rom for my sm-a750 gn.
Thank you for reply..
Click to expand...
Click to collapse
AFAIK there is no Oreo custom ROM for this phone on THIS forum

rubenswing said:
You can't downgrade because the bootloader is protected by Rollback Prevention, the only way (maybe) to use Oreo is to flash TWRP and wipe system data and use any custom Oreo ROM.
If you want to know about Rollback Prevention then there is a attached pdf from the Samsung Technical documentation
Click to expand...
Click to collapse
Is there anyway to disable the Rollback Prevention bro? So i can downgrade my sm-a750gn.

fr4n.4rdi said:
Is there anyway to disable the Rollback Prevention bro? So i can downgrade my sm-a750gn.
Click to expand...
Click to collapse
Not that I know of

Combination firmware.

Hey guys and girls I'm really confused by combination firmware . I'm looking for some for a galaxy S10 lite .
Current firmware is g770fxxs4euf6
I've found some combination files but I'm not sure which one I need I read about numbers and codes having to match and don't want to get the wrong one so how do I know which is the right one please ?

hainguyenthao said:
Here it is G770FXXU4AUA1
But you will need pit token to flash it cause it is a new device model
Click to expand...
Click to collapse
Thank you appreciate it can I get that from original firmware ?

teamtatty11 said:
Hey guys and girls I'm really confused by combination firmware . I'm looking for some for a galaxy S10 lite .
Current firmware is g770fxxs4euf6
I've found some combination files but I'm not sure which one I need I read about numbers and codes having to match and don't want to get the wrong one so how do I know which is the right one please ?
Click to expand...
Click to collapse
If you look at the build number of a Samsung firmware, the 5th character from the right end of the build number is the "Binary version". In the build number of the firmware that you posted above, the 5th character from the right in that build number is a 4. This means that your firmware is a binary 4 firmware.
The binary version is important because it prevents a user from downgrading the firmware. When flashing a firmware file, if the binary version of what you are trying to flash is lower than the binary of the currently installed firmware, then you can not flash the lower binary firmware. You can only flash a firmware that has a binary version that is equal to or higher than the binary of the currently installed firmware.
In your case, you have a binary 4 firmware currently installed, this means you can not flash a binary 3, 2 or 1 firmware, you can only flash a binary 4 firmware or higher. If you ever flash a higher binary, for example, from binary 4 to binary 5, you could never go back to binary 4 and if you flash from binary 5 to binary 6, you could never go back to 5 or 4. You can never go back, you can stay where you are or go higher.

Droidriven said:
If you look at the build number of a Samsung firmware, the 5th character from the right end of the build number is the "Binary version". In the build number of the firmware that you posted above, the 5th character from the right in that build number is a 4. This means that your firmware is a binary 4 firmware.
The binary version is important because it prevents a user from downgrading the firmware. When flashing a firmware file, if the binary version of what you are trying to flash is lower than the binary of the currently installed firmware, then you can not flash the lower binary firmware. You can only flash a firmware that has a binary version that is equal to or higher than the binary of the currently installed firmware.
In your case, you have a binary 4 firmware currently installed, this means you can not flash a binary 3, 2 or 1 firmware, you can only flash a binary 4 firmware or higher. If you ever flash a higher binary, for example, from binary 4 to binary 5, you could never go back to binary 4 and if you flash. You can never go back, you can stay where you are or go higher.
Click to expand...
Click to collapse
Ahh thank you for the explanation I understand that now and have the correct firmware I believe .
Any idea how I can get a pit file ? I've got the stock firmware and tried adding .zip on the end but this didn't work for me .

teamtatty11 said:
Thank you appreciate it can I get that from original firmware ?
Click to expand...
Click to collapse
You should not need the PIT and if you do, it should be packed in the firmware file somewhere.
hainguyenthao said:
Here it is G770FXXU4AUA1
But you will need pit token to flash it cause it is a new device model
Click to expand...
Click to collapse

teamtatty11 said:
Ahh thank you for the explanation I understand that now and have the correct firmware I believe .
Any idea how I can get a pit file ? I've got the stock firmware and tried adding .zip on the end but this didn't work for me .
Click to expand...
Click to collapse
Your firmware should be in .tar format, if it isn't, you probably need to extract it until you get a .tar.md5, then flash that via Odin.

Droidriven said:
Your firmware should be in .tar format, if it isn't, you probably need to extract it until you get a .tar.md5, then flash that via Odin.
Click to expand...
Click to collapse
when i tried installing via odin it said i needed the pit file i'll keep playing and see where i can get appreciate the help .

teamtatty11 said:
when i tried installing via odin it said i needed the pit file i'll keep playing and see where i can get appreciate the help .
Click to expand...
Click to collapse
The PIT is usually packaged in the firmware file somewhere. Try extracting the files in the firmware then extract those files and keep extracting the files down, look through the extracted files until you find the PIT file.
Or
Do some Google searches for:
"PIT file for (your specific model number"
Or
If there are older versions of firmware for your model number that you can download, download one of them and extract it and keep extracting those files while looking through them until you find the PIT file.

teamtatty11 said:
when i tried installing via odin it said i needed the pit file i'll keep playing and see where i can get appreciate the help .
Click to expand...
Click to collapse
If none of that works, there is also a way to pull a PIT file from the device itself by using adb shell commands but I'm not sure if it requires rooting the device or not.
Yep, requires root.
https://www.getdroidtips.com/how-to-extract-pit-files-for-any-samsung-galaxy-device/

Droidriven said:
The PIT is usually packaged in the firmware file somewhere. Try extracting the files in the firmware then extract those files and keep extracting the files down, look through the extracted files until you find the PIT file.
Or
Do some Google searches for:
"PIT file for (your specific model number"
Or
If there are older versions of firmware for your model number that you can download, download one of them and extract it and keep extracting those files while looking through them until you find the PIT file.
Click to expand...
Click to collapse
Thank you the person above who commented said that only people with access to Samsung servers can get the pit file and it will cost 64 dollars so I'm not sure . I did try extract from firmware I got from sammobile but it was password protected and I couldn't seem to find a password anywhere . I'll keep digging though I've not got anything to lose at this point . All a learning curve . Really appreciate the help

Question help: SM-a125U stuck in Hash of data does not match digest in descriptor

Previous android version: Android 11
Previous base-band version: A125USQU2BUG5
company: wireless cricket
In the context of flashing with the new firmware I used :
- Odin version: 3 v3.14
- Firmware used: Samfw.com_SM-A125U_USC_A125USQU2BUL1_fac_2

The error is related to the vbmeta check. Did you used a sock firmware or you have patched it with magisk? Btw i reccomend to use frija to download the firmware.
If i can suggest I would make this steps:
1) download latest firmware with frija
2) Flash the stock and see if it work
Otherwise if this not help:
1) download latest firmware with frija
2) patch the whole ap and not only boot.img with magisk
3) open odin and flash it using the patched ap on the ap slot
If nothing above works, I think you can try this... not sure it will work. Replace inside the ap the vbmeta.img with the attached one that have the disabled verified boot.

Oneplus# said:
The error is related to the vbmeta check. Did you used a sock firmware or you have patched it with magisk? Btw i reccomend to use frija to download the firmware.
If i can suggest I would make this steps:
1) download latest firmware with frija
2) Flash the stock and see if it work
Otherwise if this not help:
1) download latest firmware with frija
2) patch the whole ap and not only boot.img with magisk
3) open odin and flash it using the patched ap on the ap slot
If nothing above works, I think you can try this... not sure it will work. Replace inside the ap the vbmeta.img with the attached one that have the disabled verified boot.
Click to expand...
Click to collapse
Thanks for the reply.ok
1- The firmware is stock.
2- I didn't patch any of the files I got ( any recommended guide on how to proceed>?)
3- I' so new at this
But anyways, yesterday I kind of sorted out the stuck by adding BL file, and CSC file along the AP file to ODIN, the phone restarted ok but found out it hasn't been unlocked from the carrier yet, so I guess that by judging what u just said, there are few thing I need a guide to
- Flashing the stock
- Patching the AP file
Ps Frija opens up when executed, but it closes in less than 1 second. (Pc 's OS: win 10 enterprise 64 bits)

leonardo07746 said:
Thanks for the reply.ok
1- The firmware is stock.
2- I didn't patch any of the files I got ( any recommended guide on how to proceed>?)
3- I' so new at this
But anyways, yesterday I kind of sorted out the stuck by adding BL file, and CSC file along the AP file to ODIN, the phone restarted ok but found out it hasn't been unlocked from the carrier yet, so I guess that by judging what u just said, there are few thing I need a guide to
- Flashing the stock
- Patching the AP file
Ps Frija opens up when executed, but it closes in less than 1 second. (Pc 's OS: win 10 enterprise 64 bits)
Click to expand...
Click to collapse
When you flash with Odin you always need to use all the files provided on the stock firmware ap, bl, csc and cp. If u are upgrading you can use the home_csc instead of the csc file that will let you keep your data.
Are you sure you have installed the framework that Frija need?
For the ap patching, is only meant if you want root your phone, flashing the whole ap instead of the boot.img only will let you fix the vbmeta checks too.
Install the magisk app.
Open it and tap Install, it will ask for a file to patch, chose the ap file of the stock firmware you downloaded.
Final step, flash ap patched and the others (bl,csc,cp).
When you say unlocked by the carrier what do you mean? You have any sort of sim block? Or you only want remove your carrier apps and configs?

Oneplus# said:
When you flash with Odin you always need to use all the files provided on the stock firmware ap, bl, csc and cp. If u are upgrading you can use the home_csc instead of the csc file that will let you keep your data.
Are you sure you have installed the framework that Frija need?
For the ap patching, is only meant if you want root your phone, flashing the whole ap instead of the boot.img only will let you fix the vbmeta checks too.
Install the magisk app.
Open it and tap Install, it will ask for a file to patch, chose the ap file of the stock firmware you downloaded.
Final step, flash ap patched and the others (bl,csc,cp).
When you say unlocked by the carrier what do you mean? You have any sort of sim block? Or you only want remove your carrier apps and configs?
Click to expand...
Click to collapse
thanks for all that
- it s sim block

Oneplus# said:
When you flash with Odin you always need to use all the files provided on the stock firmware ap, bl, csc and cp. If u are upgrading you can use the home_csc instead of the csc file that will let you keep your data.
Are you sure you have installed the framework that Frija need?
For the ap patching, is only meant if you want root your phone, flashing the whole ap instead of the boot.img only will let you fix the vbmeta checks too.
Install the magisk app.
Open it and tap Install, it will ask for a file to patch, chose the ap file of the stock firmware you downloaded.
Final step, flash ap patched and the others (bl,csc,cp).
When you say unlocked by the carrier what do you mean? You have any sort of sim block? Or you only want remove your carrier apps and configs?
Click to expand...
Click to collapse
Mannn thanks!
I rooted my tab 5Se a long time ago and deleted the firmware files except the AP.
I got stuck on the same screen today when I re-locked my bootloader after a stock AP-only flash
Then I saw your reply here and got the rest of the files flashed and it worked and booted
And for those who are reading if you don't have a SIM on your tablet you don't need a CP that's why you won't find it in your firmware zip file
Cheerios

Question Broken AP patch - is TWRP out for this model yet?

Hey guys, I'm on an SM-F711B. Today when trying to update my rooted OS, I had Odin fail twice while trying to install the patched AP file. I also noticed that the patched AP file was about half the size of the original - 3.2gb instead of 8gb. I then tried to install with the stock AP file, but now (duh) it says the file system is corrupted and Android can't boot. Is there any way I can a) fix the patched AP file without access to my phone, or b) at least recover the files (especially images) from my device before having to factory reset? many thanks

Hi,
there's no twrp yet and I doubt that there will ever be. Can you download the firmware again and flash the stock rom to begin again?
Edit:
what size is the original AP file?

thanks for the response
is flashing the stock rom different from loading the stock AP/BL/CP/CSC from Odin? If so, how do I do it?
The AP file is 7.74 GB according to Windows

my AP file is 8.11 GB, which firmware are you trying to flash?
yes the stock rom is different words for stock firmware but if you've already flashed the CSC file (instead of HOME) then you've probably lost any photos as it wipes the storage

Oh, to clarify, I did flash HOME_CSC. my AP filename is AP_F711BXXS2CVG1_F711BXXS2CVG1_MQB53367836_REV00_user_low_ship_MULTI_CERT_meta_OS12.tar if that at all helps narrow down the firmware? I just got whatever was latest from Frija

can you install magisk on a friend or family phone and try patching the AP file again and check the patched file size? it should be slightly larger than the original AP file

Thanks for the advice. I tried patching on my partners phone, a Pixel 2XL. Magisk printed
Code:
-- Copying: super.img.lz4
! Process error
! Installation failed
Do I need to run the patch on another Z Flip 3? Or is this a sign that the AP file i got from Frija is corrupt? It's interesting that it failed during super, as Odin also failed during super when trying to install the patched version
Edit: Her phone was full. We've cleared up some space and I'm trying again

yes I think the firmware might have a gremlin in it, I'd try downloading from a different website and start again
Download Galaxy Z Flip3 5G SM-F711B (O2C) F711BXXS2CVG1 in Samfw - Samsung firmware download
Galaxy Z Flip3 5G SM-F711B (O2C - Czechia) F711BXXS2CVG1 S(Android 12) samsung firmware download all model, lastest, fast update, completely free and fast speed in Samfw.com ✅
samfw.com

Hi, I've managed to patch the AP file using my partners phone. It is slightly larger than the original AP file (on Android, 8.39 instead of 8.31 GB). Can I use this patched AP file on my Z Flip 3? or is it model-specific?

yes you can flash it...good luck!

OMG it worked!!!! thank you so so much for your help!

lesbianpinkie said:
OMG it worked!!!! thank you so so much for your help!
Click to expand...
Click to collapse
Wait - spoke too soon. phone boots, but in my file manager, Internal Storage is being shown as 0b / 0b, and no apps seem to be able to access it..... any idea what to do now?

this has happened to me before and in twrp I would choose repair file system, but of course we don't have twrp hmm. did you try flashing the stock AP file to see if that fixes it, then can root afterwards