Dnf upgrade: boot failes

Today I updated my asahi linux and the system is no longer bootable. It tries to boot, re-boots and finally falls back to recovery mode.

I tried alx/sh/dev to install newer m1n1, but this did not help. In the end I deleted all linux partitions and re-installed. This worked, but after a dnf refresh the system is again no longer bootable.

I’m on a M2Pro.

@marcan do you have an idea?