Current workaround See #543 (comment) Original issue text Describe the bug Trying to rebase an existing SB39 to SB40 fails to boot showing vmlinuz-6.8.1-300.fc40.x86.x64 has invalid signature. you ...
and it means that there's a manual step regardless for those projects since we don't have access to the privkey to sign with so a new key would need to be manually imported by users