FP4: After Android 15 update, phone wont boot, stuck with green bar

[Patrick_Bormann]

Hi everyone,

I tried the update to Android 15 this morning but, after updating, I get the same error as FP 5 users earlier this year. Except I am on FP4.

I know how to get back to Android 13, and there it tells me the update didnt finish.

Problem is, i would wait until its fixed, but after the failed update, every sound output is stuttering every 10 seconds. So the failed update messed up something.

I tried to Reinstall, even in Safe Mode and there is enough space. But it doesn’t work. It sounds like the Fingersensor issue on FP5…

All the best,

FP5 not booting after update to Android 15

OK. So the phone allows Recovery and Bootloader, but there appears to be no valid System version that can be booted. From your previous post I had received the impression that you had successfully booted A15, but then attempted to go back to A14 with a Factory reset. Unfortunately a Factory reset is only an option if the current bootable System is valid. We’ll have to wait for advice from Fairphone I think in this case.

Ex

[OldRoutard]

Hi, welcome to the forum and thanks for the information.

I agree this sounds similar to the FP5 problem which was related to dysfunctional fingerprint sensor. However, in the FP5 case the update itself was successful, the problem lay in booting A15. In the case you report, it sounds more as though the update itself didn’t complete properly.

Does the fingerprint sensor of your unit function?

It’s certainly necessary to report the problem to official Support, either via the MyFairphone app or using the website https://support.fairphone.com