Hello @Zesko!
Was there, done that!
I successfully updated my system and ran the update-grub command. This did not result in a standard boot procedure via default (per countdown), but at least I can now reuse the last snapshot and do not have to go back further in the snapshot history!
I have attached two screenshots with error messages for the default boot and one snapshot that no longer works (#1):
#1
Translation:
“Error: File >>/@/boot/vmlinuz-6.1-x86_64<< not found”
“Error: You have to load the kernel first.”
“Press any key to continue”
#2
Translation:
"Loading Snapshot […]
"Loading Kernel: vmlinuz-6.1-x86_64 […]
“Error: File >>timeshift/snapshot […] not found.”
“Error: You have to load the kernel first.”
“Press any key to continue”
I would really like to avoid booting a specific (the current) snapshot and would like to go back to default if possible.