I did a FP5 e/OS install using the easy installer with Windows 10 (cringe) on a borrowed laptop and it all appeared to install successfully (although I did need to install new drivers via windows update- optional update - because Device Manager showed a warning icon over the Android device).
I got to stage 23 of 24, where it ran through and installed all the files and should have then restarted with the murena logo displaying… except there was no logo and it got stuck in an endless ! The only options were start, power off, recovery, etc and all just resulted in a restart back to the same menu - although the menu did confirm both bootloader and critical were unlocked
It then stopped powering off so I had to take the battery out for 1 min to get it turned off.
I was worried I might have bricked it (and I had not checked the security update version before starting), but I did have both the bootloader and critical unlocked. It also doesn’t show the battery level in fastboot mode so you can’t check if you are at over 50%.
Solution was to follow the instructions for a e/OS manual install from https://doc.e.foundation/devices/FP5/install (easy install couldn’t be done again):
- Being on Windows 10 this meant first installing adb and fastboot
- Installing Git
- Copying the e/OS imaging files to the computer - I chose the official FP5 version - currently /e/OS build : T official (Security patch: 2025-03-05) - rather than the community one
- using the command prompt cmd to run the install (.sh file) from the folder with the imaging files - only took a few minutes
- Although Windows Device Manager could see the phone adb devices failed to show it - apparently you have to use fastboot devices instead of adb when in a fastboot menu.
This then ran through successfully and the e murena logo appeared on reboot (which should have happened the first time).
I chose not to lock the bootloader after because I wanted to be sure all was working first (is it essential to lock the bootloader?)
This was also helpful from Murena’s forum: https://community.e.foundation/t/stuck-in-a-boot-loop-after-install-attempt-on-fp5/65452/3
Perhaps someone can merge this with a similar fastboot loop thread, the ones I saw were closed.