Hi everyone,
for a customer project we have created a custom build of LineageOS 18.1 for SM-P610 and I have an image that is complete with our signage software.
I used to be able to flash these devices following the official installation instructions from the LineageOS page
https://web.archive.org/web/20211002124915/https://wiki.lineageos.org/devices/gta4xlwifi/install
Now this doesn't work anymore. On some devices, I can't even unlock the bootloader. This has been discussed elsewhere and I have tried all the tricks from manipulating the datetime to logging on with a google or even a samsung account.
But even on the devices where I could onlock OEM, I can't seem to install the LineageOS recovery. I always get the error message "Only official released binaries are allowed to be flashed (RECOVERY)". FAP LOCK is OFF and OEM LOCK is OFF(U).
It says in the LineageOS install instructions that I must have the latest official Android 11 firmware installed. Previously, I would simply OTA update to this firmware, but nowadays, OTA goes directly to Android 12. So I tried downloading the only available Android 11 firmware from sammobile and flashing it in Heimdall. But unfortunately, I still get the same error message.
Can anybody please tell me which version of the Samsung bootloader I need exactly to install this version of the LineageOS recovery: lineage-18.1-20220112-recovery-gta4xlwifi.img?
Bonus question: Does anybody still have this firmware version mirrored somewhere?
edit: I have downloaded a newer recovery from the internet archives: lineage-18.1-20220504-recovery-gta4xlwifi.img
Now a get a different error message: "Custom binary(RECOVERY) blocked due to remaining installment balance".
Can somebody tell me what this means?