But then, back to system, Settings app and bluetooth kepts crashing, lots of tracebacks in the logcat, telling that eg. /data/user_de/0/com.android.settings/databases/homepage_cards.db was not found (and indeed /data/user_de/0/com.android.settings does not exist at all).
I'm on Fairphone 3+, OS version 0023.0, Android 11
I booted on twrp-3.7.0_12-0_k4y0z-20230821-01-fp3.img via adb, which didn't work of course for decryption (wrong OS version)
Then I booted on twrp-3.7.0_11-0_k4y0z-20230818-01-fp3.img which worked fine, acccessed partitions, and backed up everything.
But then, back to system, Settings app and bluetooth kepts crashing, lots of tracebacks in the logcat, telling that eg. /data/user_de/0/com.android.settings/databases/homepage_cards.db was not found (and indeed /data/user_de/0/com.android.settings does not exist at all).
It's a similar problem as : https://community.e.foundation/t/settings-stop-working/46072/9 (in that it's due to TWRP, not in the precise diagnostic)
I have no idea if it's the 12 or the 11 image boot that broke my system.
But I didn't expect a "backup" operation to alter and break my system folders, it's weird.