Hi there dear Custom ROM flashing pros 
I finally got my second hand FP4 and as planned I directly wanted to install the newest version of iodéOS (4.5) on it.
Unfortuntately the guide of Brotmaa on Brotcast doesn’t exist no longer or isn’t available anymore (https://www.brotcast.ch/blog/2022-11-29-how-to-install-iode-3-on-a-fairphone-4-for-dummies/)
I found an older guide from AlphaElwedritsch but this was from before there was a script for the installation so it seems to not work anymore. (Managed Nextcloud)
Anyways, as @MiKeM did before, I stuck to the official installation procedure on the iodé website (which is very minimalistic) and executed the sh script.
A few commands weren’t working but it somehow installed the recovery anyways (for example the “fastboot format:ext4 cache” didn’t work and the “fastboot flash modem modem.img” also not I think).
But fortunately I didn’t lock the bootloader again!
The phone booted into iodé recovery and wanted to do a factory reset because of some reason which I accepted. since then it is stuck in a bootloop.
I can still access fastboot mode but I honestly have no idea what to do.
I read about some slot a and slot b that I should flash the ROM to but I don’t know how to do this (Locking bootloader after installing Iodé 3.4?).
Anyways, did some of you experience the same issues and could help me out?
That would be awesome!
Many thanks in advance and cheers!