Don’t really install TWRP if you want to keep your Fairphone OS updating automatically. Installing TWRP means changing the boot partition, which will break OTA updates of Fairphone OS because the updating process checks whether the partitions are unchanged.
This is now different from how TWRP and OTA updates worked on the Fairphone 2.
Unlock the bootloader. This will also do a factory reset.
Heed the warning …
Instead of installing TWRP, just boot it with fastboot from a computer (fastboot is part of the Android SDK Platform Tools) …
thanks both of you.
too bad twrp wont be like on fp2 with the updates, but i would take that. twrp was very helpful for my fp2 with the total system backup, which i dont have right now with the vanilla fp3 and if the Open OS will come for fp3 maybe it is the easiest way to install that, i guess. so i try to prepare it for that day. i have no problem with updating manually, i mostly do that anyway.
but your suggestion was not to intall it and instead unlocking bootloader and then use fastboot via a pc and boot twrp? did i get that right? so basically i use twrp on my pc for the smartphone and i can back up everything like that?
You connect your phone to your PC via USB, boot the phone into Fastboot Mode, and then you execute fastboot boot twrp.img (or whatever the filename is) in a command line on the PC.
This will then boot TWRP on the phone without you having to install it. Nothing will change on the phone, as long as you keep System read-only in TWRP (important!) …
You can then use TWRP on the phone to backup the partitions …
Here’s a little something in case you’re interested …
I’m not sure I would tell this here, if I wouldn’t, please tell me, I’ll delete my message. I’ve encountered a problem rooting my phone using twpr and magisck. May anyone help me ? I’ve created a new post in order to avoid “flooding” this one, here Problem with rooting FP3
And really sorry if my ask seems to you inappropriate.