Soft bootloop with entirely black screen after update

Howdy! I’m having an issue where my phone has absolutely no responsiveness, however I know that it charges normally and is even recognized by my computer as a USB device. Some observed behavior:

(1) holding just the power button, power+volume up, power+volume down all have same effect, device restart into the same mode
(2) adb devices, fastboot devices show nothing.
(3) The device appears in windows device manager as a samsung adb device (after installing driver manually)
(4) Nothing on the phone gives any indication of life when it is not plugged in. Display does not react or turn on in any way. edit: however it appears in device manager and dis/reappears when any combination of the buttons are pressed to restart.

Extra context/history:
(1) The phone was turned off after an update install and the screen did not turn on after the update installed. Possible that the post restart boot was somehow interrupted.
(2) the update (minor, 22.2 →22.2 Aug. 12) was installed locally on the phone through the suggested Download/install steps on the popups.

Thanks for your attention!

Hey there!

Sorry to hear about you FP5 not booting anymore…

You state that the different button clicking combination let the phone restart, but also that there is no indication of life. What life do you see then, how do you indicate the rebooting?

Because it’s directly after an update, maybe the same solution to roll-back to the previously installed Android version works for you as it does for the users being stuck with a broken fingerprint sensor (7 reboots after each other)?

I know that you don’t face the exact same issue, and I’m not sure if your device boots far enough to recognize those 7 reboots to then switch to the other, old partition - neither if on the old partition is still the old Android version (if booted once successfully after the update, I think it gets overwritten?). But worth a try?

2 Likes

Hi thanks for answering!

The only indication of life I have is actually when it is plugged into the computer. I can hear the device disconnected and reconnected chime after I do any combination of the button presses I listed above for about 10 seconds. I’ll try the rebooting many times approach with just the power button, maybe it works.

Update: rebooting many times in a row doesn’t seem to work but I’ll try in a more systematic way in a few days.

1 Like

Sorry to hear. Your description sounds like your FP does not boot far enough, the others with the broken fingerprint sensor get to the green boot animation that you don’t see.

Then I’m out of ideas, besides contactsupport . Try to get them in the live chat during the short live hours early when they start at 10, and don’t mention any support ticket in case you already have one to the AI bot, otherwise you don’t get through to a human.

They are available weekdays 10-12 currently, central European time zone.

1 Like

Update: I tried reaching out to local phone data repair centers but it seems none were willing to work on a phone with a third party OS, apart from one whose repair workflow seemed a bit off and quoted a price of 200€ without knowing much.

I’m sending the phone to the repair center in France and they initially quoted me 30€ for an assessment. We’ll have to see if they replace the motherboard, are able to boot the phone in the original OS.

I have exactly the same issue with my FP5. Do you have any update on what happened or have done?

Hi! Sorry I didn’t answer. The fix I did was to send it to the repair center, and they replaced the motherboard. The repair center (the official party Fairphone uses, did not put much effort into diagnostics as they didn’t even notice that the phone had a soft boot loop. I had no other options it seemed, and following Chatgpt wasn’t helping much either.

After getting my phone back, I did not bother to install lineageos on it again. The risk of something like that happening again, while small, outweighs the benefits that my setup of Lineage had for me (I had the version with Google Play, so differences to FPOS were not that great). Hopefully you were able to find a way that didn’t involve spending the 200€ to get the motherboard replaced.