I bought an FP2 in second hand last January and I tried to install a .zip through TWRP, but with this manipulation, I bricked the Fairphone. In fact, the phone don’t on an OS, I’ve just the Fairphone Logo on the screen and nothing else.
Before tho ask help on this forum, I read this topic: Hard-Bricked FP2 and many others, but I don’t found the solution to repair it.
I tried the following things:
Enter the recovery menu (Volume up and power)
Enter the fast boot menu (Volume down and power)
But I can’t access anything.
I also try to access the phone with fastboot but I have this error message:
device unauthorized. Please check the confirmation dialog on your device.
I wanted to check if someone can help, otherwise, the phone is still under warranty but I don’t know how to contact the support.
The device unauthorized looks more like an adb message than fastboot, I’ve never seen that in fastboot mode.
Basically, using [Power] + [Volume down] for fastboot brings you to a black screen with Fairphone logo (that’s how the phone looks in fastboot mode). But then, with the command fastboot devices you should be able to see your phone in your terminal.
As I said, “device unauthorized” is new to me in fastboot mode. Can you confirm that you get this message when you try what I explained above (i.e. using fastboot devices command in fastboot mode)?