NitroPad Ubuntu boot issue: Invalide signature on kexec boot params

[okoe]

I updated Ubuntu and now face the same issue as discussed here. The difference is, that the proposed solution does not work for me:

Please try “Options” → “Update checksums and sign all files in /boot”

My attemt results in:

failed to update checksum ...

Who can give any advise?

[rwunderer]

Is it maybe this problem:

Can't boot, date overflow error

Please identify some basic details to help process the report During boot Heads tells that the keys have been created 19578 days in the future, won’t boot with (goes directly to the recovery console) or without the Nitrokey (goes to Heads menu). The hwclock date is 01-01-1970. The only way to boot is to set a date prior to today through the console and copy it to hwclock, then reboot. This happens on a NitroPad NS50 with Heads 2.4.1. It happens on every NitroPad NS50 we have. Steps to reprodu…

[okoe]

This works for Nitropad NV41 v2.4:

date -s 2024-03-01
hwclock -w
reboot

Thanks a lot!