Fairphone OS uses the stock Android recovery and under certain circumstances is able to restore that over a TWRP installed by the user.
Fairphone Open OS uses TWRP as recovery itself, so it shouldn’t happen with Fairphone Open OS.
That’s not a bad idea, but not strictly required. If your phone is encrypted, you need a halfway current version of TWRP that supports encryption.
TWRP can update itself. If you want to select the TWRP image file in TWRP, there’s a button to switch the file view from displaying ZIP files to displaying IMG files.
Frankly speaking i had some heart palpitation because automatic update did not work. Therefore, your link to www.zdnet.de was very valuable. They also say that it is sometimes difficult and download of update via browser is a safer method.
I have also to mention that it seems that TWRP cannot check sha256 and always looks for md5 sums. Therefore, the first flashing did not work because of missing md5. Therefore i switched off in TWRP md5-check because i manually checked sha256 with my computer after download of update.
Herebelow the steps i did:
Download update from Lineage Homepage.
Check integrity of downloaded file (sha256). I did it under Linux in the Terminal with:
sha256sum lineage-14.1-20171219-nightly-FP2-signed.zip
Compare output of Terminal with sha256 listed on Homepage of Lineage for this file.
Put file on sd-card
Boot to TWRP-Recovery
Remove the md5sum check (see above sha256) and flash the file.
Reboot
[Edit @AnotherElk: Link corrected, the ZDF (Second German Television channel under public Law) doesn’t help much here.]
Acutally Fairphone Open does exactly this. If you don’t hold Volume Up on reboot after upgrading FPOOS your manually installed TWRP will be overwritten by the outdated TWRP 2.6 from the FPOOS image even when you install it from the ‘manual’ package and delete the recovery image from the extracted zip file and the shell script.
Baseband version is given in Settings - About phone, that’s why I mention it there, you don’t see something like “Modem files version 17.11.2” anywhere in LineageOS.
And the modem filename is a link to where you can get it .
Slightly updated my post above because I forgot to mention that bluetooth works. I tested my MusicMan BT-X2 and the car audio system of a Mercedes CLA last time I used car-sharing.
Found Baseband version and download link. But sorry, it is still not clear what i have to do. Shall i download and install latest Modem files version?
My phone works very good only with Lineage and Lineage found directly my provider and data connection worked out of the box. With Fairphone OS and F!airphone Open i had to manually insert all the APN-settings!
In any case, the modem files get installed independently from the OS, so if you run into a problem with a new modem version, you can just install an older version.
Or you can install the latest version again and again and again … doesn’t hurt the OS installation.
I encrypted my phone some versions ago and it works.
Root access for a secondary user doesn’t work. The ‘battery charge limit’ app doesn’t work for the secondary user, it also doesn’t for the primary one, if there is a secondary one.
That would be kind of schizophrenic. I install Open GApps pico exactly to have the Play Store .
It’s just that when I’m flashing stuff in TWRP anyway, it can’t hurt to update Open GApps, too.
The Play Store gives notices when it updates the Apps I installed from it, but there’s never a notice about the underlying Google service parts, how frequently are they updated?
Perhaps I could look that up somewhere, but why bother? It’s no big deal to just install a fresh Open GApps when I’m installing stuff anyway and I’m fine for another week or so .
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