First, sorry for my english, i’m french, but no response in the french section.
So, i’ve got a question, i see a lot of you talk about TWRP and it seems very important, to save data and restore phone.
I see topic about TWRP, i see topic about e/os installation but not with the “easy installer”.
My question is:
It is possible to install TWRP (for back up etc …) and use easy installer ? How can i do that ?
I use fairphone 3.
For the story, i’ve already use the easy installer (two weeks ago) and sucessfully. But a problem with my fairphone appari (not with e/os), and the constructor has changed component and reset my e/os
So today, i want to get back e/os and do back up to cover me
Thanks to anyone will help me.
I hope this message will not be to strange (french-english).
You would need to unlock the bootloader to be able to use TWRP, because the Easy Installer process locks it.
This will force a factory reset for security reasons, so your user data will be deleted.
Having an unlocked bootloader has security implications you need to assess for your situation. Your data on the phone is encrypted by default, but you should set up a screen lock PIN or password (pattern is possible, too, but a bit impractical for TWRP usage, TWRP can’t prompt you for inputting a pattern yet, it would need a number converted out of the pattern). This would then serve as the decryption key needed to access your data and nobody simply stealing or finding your phone could access your data without knowing this key.
You could still be targeted personally, however, by bad guys snatching your phone unnoticed by you, installing malware thanks to the unlocked bootloader, returning it to you still unnoticed, then waiting for you to unlock the screen to then do whatever with your unlock method or your data. How realistic or risky this is depends on your circumstances and mindset and can only be assessed by you.
Then you would be able to use TWRP by temporarily booting it with fastboot, see https://twrp.me/fairphone/fairphone3.html.
Installing TWRP is possible, but it makes not much sense on the Fairphone 3, because due to the lack of a recovery partition (because the Fairphone 3 is a so-called A/B device) TWRP would get embedded in the boot partition, and every /e/ update will overwrite the boot partition with its own one again, restoring the /e/ recovery.
It’s not much use to install it, but temporarily booting it with the fastboot command given at twrp.me and by @Erekoze works perfectly fine.
I’m using TWRP this way for backups myself. For your consideration …
And you might find a lot more on backups via the forum search.