I wouldn’t recommend it, encrypted /data is default on newer Android versions I believe.
If you do, you will have to wipe the data partition completely and I wouldn’t try that without a complete flashable rom available for disaster recovery.
since I flashed /e/os on my FP4, I cant boot into twrp anymore.
Any ideas, why this is the case?
I would like to use TWRP to root my device using Magisk, since the usual method doesnt work on /e/os
Because installing /e/ overwrites the recovery partitions
And besides, please don’t flash TWRP to your device, just boot it with fastboot boot twrp.img
What problems do you have with the usual way, it apparently still works
Edit: To be slightly more precise, since you are flashing your whole phone anyway, you can just take the boot.img from the /e/ release, patch that with Magisk and flash it to your device. If you need help with that, please head over to the root topic
Using Magisk to flash the Stock ROM boot.img works fine. I did that, when /e/os was not released yet. It doesnt work with the /e/os provided boot.img. Many guides in their forum suggested to use TWRP instead to flash the Magisk.zip directly, since it doesnt require to modify the boot.img using the install step.
I did not try to flash it. I tried to boot it using fastboot boot downloaded-twrp-name-that-is-really-long.img, however it stayed in the boot screen where it showed “Fairphone”.
All user data is on the so-called userdata partition which is always encrypted on FP4, and TWRP currently cannot decrypt it and see the data to back it up. So you can only “back up” system partitions that contain the Android system but that’s probably not what you’re looking for.
That guide won’t work for a full backup, all the interesting parts of the system (apart from the A/B partitions) are inside the super partition. Without access to encrypted data in TWRP you can’t back up that partition.Edit 2:super isn’t encrypted
I backed up all the partitions I could on a running phone using dd, but that won’t produce a complete set of partitions you can use to flash your phone back to normal, since you can’t completely back up those special partitions from userspace.
Can we back up the super partition in TWRP? /data doesn’t work, sure, but the super partition would be more interesting. The amount of partitions I can choose from in TWRP doesn’t really match the partitons actually on device…