My S10e is running LineageOS 19.1, rooted with Lygisk. After one specific reboot after changing the SIM card, it entered a boot loop where it showed the Lineage boot animation for a few minutes, then reboots. I never got to the unlock screen anymore.
After reinstalling bootloader etc. as well as dirty flashing LineageOS, the phone boots up again but I don't get access to data on the interal /sdcard. The partition is accessible but all files/folders are encrypted. Trying to access them in TWRP terminal (or trying anything else like Nandroid backup) I always get the error "Required key not available".
So, my questions are:
- can I in some way bring the phone's software to exactly the same state as before and making it recognise data, so that I can decrypt it?
- will enabling phone encryption again and using the same lock/encryption pattern be sufficient? (I fear not)
- Or is my assumption that it should be possible to reconstruct the key when using the same lock pattern on the same hardware & software flawed in general?
- Is there any kind of redundancy of storing keys in LineageOS, which would allow to restore the original one?
- I do have a SeedVault backup - does it include the original encryption keys?