Unsolveable version mismatch after reinstall 2.0 vs 2.1?

I started doing some long overdue updates 2.0, in the logs it said a reflash of the mcu might be required after the updates. Indeed there seemed to be a problem since nothing of klipper worked anymore afterwards and neither did automatically/manually flashing it... So i did a complete reinstall of rpi and clean setup. I got the version mismatch during setup (see picture) and reflashing it does not solve it. I decided to ignore it and continue, everything also seemed to work until i try to home it initially. I get an error that the axis should be homed before homing?? (see picture) Setting center kinematic position and everything works fine afterwards. The only possible solution i found was something about jumping on the pre release train of 2.1?