Hi, I need some help with my Fairphone4 and the installation of /e/OS.
I followed the installation guide at Install /e/ on a Fairphone FP4 - “FP4” with my Windows 10 computer.
The installation went fine and the OS looks good when starting it in unlocked mode.
BUT, when I want to lock the device/ bootloader again, I get some problems.
I did the following to lock the device:
Step 1: In the bootloader menu I used fastboot flashing lock_critical
.
Outcome: The phone reboots, but will not boot the /e/OS correctly. At that point I am stuck on the loading screen with the jumping “e”. The only way to shut down the phone is by removing the battery.
Step 2: Back in the bootloader menu, I used fastboot flashing lock
.
Outcome: The device is rebooting, but the message is displayed, that the device is corrupted and cannot be boot. At that point I am stuck in some kind of boot loader loop. I cannot shut down the phone (except by removing the battery) and I cannot boot the OS. It will always come back to the boot loader screen.
Some background info:
- Device: Fairphone 4
- /e/OS Image used: IMG-e-0.21-r-20220123158735-stable-FP4.zip (latest stable)
- Installation guide used: Install /e/ on a Fairphone FP4 - “FP4” (all requirements set and everything done as described)
- Windows 10 PC
- stable USB cable
After discovering this, I tried out a few things I found online.
For example, I unlocked the device again, used fastboot --set-active=b
and locked it again (no difference, turned it back to set-active=a now).
I now re-unlocked the phone (unlock & unlock_critical) in order to be able to boot the device.
But of course I want it to be locked in the long run, as I don’t know which risks I would take by leaving it unlocked.
Can anybody tell me
(1) what I can try to lock and still boot the device successfully?
(2) what risks there are if I leave the phone unlocked?
I appreciate any help.
Thanks in advance!