Help! Can't use phone after latest update, can't install new OS manually because PC doesn't recognize phone

[AnotherElk]

@hnms

We tried installing via TWRP (we’re running 3.1.1-0), but TWRP gives us the error message “Unable to find partition for path ‘/system’”

@Volker

That’s a normal output line (although it sounds strange) during OTA update.

@hnms

and when we try installing anyway, we get “Zip signature verification failed”

Which file exactly do you want to install this way?

You can’t install the manual installation file with TWRP, and OTA files for installing with TWRP are only provided for Fairphone Open OS since Android 7.

Worth a try when in TWRP …

Accidentally entered TWRP (Team Win Recovery Project) and no idea what to do

Had exactly the same issue, thanks for your solution. If someone have the same issue TWRP -> Install -> cache -> FP2 update zip file -> install

A little more detail in between …

@AnotherElk

“Install” in TWRP’s main menu, then navigate to /cache by tapping “(Up A Level)” and “cache”, and hope fp_update_gms_whatever.zip is still there to select.

Else … fastboot mode on the phone and the fastboot command on a computer are the “last line of defence” when things go wrong, this has to work somehow … and usually it does.

Try the steps 1. and 2. here to get fastboot going … and report any errors with this …

Installing the Fairphone 2 from scratch in case of failure / Komplette Neuinstallation des Fairphone 2 im Fehlerfall

Updates could go wrong, upgrades could go wrong, own experiments could go wrong, any given thing could go wrong … and the Fairphone 2 doesn’t boot anymore, doesn’t update anymore, doesn’t do any given important thing anymore. Updates können schief gehen, Upgrades können schief gehen, eigene Experimente können schief gehen, irgendetwas anderes kann schief gehen … und das Fairphone 2 bootet nicht mehr, updatet sich nicht mehr, oder tut irgendetwas anderes wichtiges nicht mehr. If even a factory …