Hi,
While trying to make space on my old S7 Edge SMG935F using a third party app to clear app caches, it suddenly went black, and came back up with the message in red: 'Custom Binary Blocked By FRP Lock'. I bought this phone new from 1&1 quite a few years ago, so I don't understand why I am being blocked. At this screen with this message, I was not given an option to enter my google account details.
After googling online looking for a solution, I tried to re-flash using Odin (versions: 3.14.1, and then 3.13.3) with the latest firmware from sammobile for Germany 1&1.
After selecting BL, AP, CP and HOME_CSC files in Odin and 'Start'ing the flash process, the downloading to my phone reaches 99% and always 'FAIL's on the file: hidden.img.
I have looked on various forums, and see that there are a few solutions. The solutions I have seen involve either:-
- extracting/deleting hidden.img from the firmware .md5 file, and then repeat flash of the updated .md5 file now without the file: hidden.img,
or...
- extracting the file: hidden.img and then re-flashing it separately.
Both of these solutions involve finding the file: hidden.img in the AP firmware .md5 file, and then re-flashing using the 'AP' button option of Odin.
The firmware for my version includes: BL, AP, CP, CSC and HOME_CSC .md5 files. My understanding is that I need to use the HOME_CSC file to preserve my files after re-flashing and rebooting. This is what I want to do, to preserve my contacts, call history, whatsapp data etc.
After extraction and searching all of these above files, only in the CSC and HOME_CSC .md5 files did I find a hidden.img file contained with the extension: '.lz4', hidden.img.lz4.
The extracted HOME_CSC contains a directory: 'meta-data' which contains a text file: 'download-list.txt' which contains/lists the following:-
sboot.bin
cm.bin
system.img
cache.img
hidden.img
boot.img
recovery.img
modem.bin
up_param.bi
Do you know what I need to do to solve this problem? Is it something like the following or something else?
Remove/delete the file: hidden.img.lz4 from the HOME_CSC?
Remove the hidden.img entry from the download-list.txt?
Archive/tar the resulting files, and add an '.md5' extension to a file with a new name, e.g. HOME_CSC_without_hidden_img.tar.md5.
Use Odin to flash with this updated file instead?
I am worried about causing irreparable damage before trying anything. Do you know if any of the above are dangerous to do, i.e. will brick the mobile?
Thanks in advance,
Andrew
While trying to make space on my old S7 Edge SMG935F using a third party app to clear app caches, it suddenly went black, and came back up with the message in red: 'Custom Binary Blocked By FRP Lock'. I bought this phone new from 1&1 quite a few years ago, so I don't understand why I am being blocked. At this screen with this message, I was not given an option to enter my google account details.
After googling online looking for a solution, I tried to re-flash using Odin (versions: 3.14.1, and then 3.13.3) with the latest firmware from sammobile for Germany 1&1.
After selecting BL, AP, CP and HOME_CSC files in Odin and 'Start'ing the flash process, the downloading to my phone reaches 99% and always 'FAIL's on the file: hidden.img.
I have looked on various forums, and see that there are a few solutions. The solutions I have seen involve either:-
- extracting/deleting hidden.img from the firmware .md5 file, and then repeat flash of the updated .md5 file now without the file: hidden.img,
or...
- extracting the file: hidden.img and then re-flashing it separately.
Both of these solutions involve finding the file: hidden.img in the AP firmware .md5 file, and then re-flashing using the 'AP' button option of Odin.
The firmware for my version includes: BL, AP, CP, CSC and HOME_CSC .md5 files. My understanding is that I need to use the HOME_CSC file to preserve my files after re-flashing and rebooting. This is what I want to do, to preserve my contacts, call history, whatsapp data etc.
After extraction and searching all of these above files, only in the CSC and HOME_CSC .md5 files did I find a hidden.img file contained with the extension: '.lz4', hidden.img.lz4.
The extracted HOME_CSC contains a directory: 'meta-data' which contains a text file: 'download-list.txt' which contains/lists the following:-
sboot.bin
cm.bin
system.img
cache.img
hidden.img
boot.img
recovery.img
modem.bin
up_param.bi
Do you know what I need to do to solve this problem? Is it something like the following or something else?
Remove/delete the file: hidden.img.lz4 from the HOME_CSC?
Remove the hidden.img entry from the download-list.txt?
Archive/tar the resulting files, and add an '.md5' extension to a file with a new name, e.g. HOME_CSC_without_hidden_img.tar.md5.
Use Odin to flash with this updated file instead?
I am worried about causing irreparable damage before trying anything. Do you know if any of the above are dangerous to do, i.e. will brick the mobile?
Thanks in advance,
Andrew