Fairphone 4 /e/OS installation locked in FastBoot Mode

Hi everyone!
I hope to get some help here, since I don’t really have an idea what I am doing here…

So, I got two fairphone 4s on which I wanted to install /e/OS . I tried the easy-installer under ubuntu 22.04, however the device detection didn’t work, so I tried the web-installer under windows 11. First phone, works without problems, using /e/OS happily. Second phone, everything is the same until the installation of /e/Os (after the third reboot). The installation looks completed, some screen flashes shortly on the phone, however then I am left with what you can see in the attached picture. Seems to be called FastBoot Mode. Sadly, the web-installer tells me the installation is successful, and I cannot re-connect to the phone to try to install again. Can someone tell me (for dummies, since until now I just followed what the GUI would tell me) a way how I can install any OS on the phone to then maybe try a manual installation (since easy installer failed and I don’t trust the web-installer anymore). Thanks for any help! Now I am left with a piece of electronics that I can’t use so I am more than happy to change that state.

Edit: So, if I select “start”, the android logo flashes (not the /e/Os one, so maybe installation did not work out in the end) and then the device returns into FastBoot Mode. The other options are “Restart bootloader”, “Recorvery mode”, and “Power off”.

Hello @Valeria, welcome to this forum.

Can you first try to reboot the phone ?