Just thought I'd reinstall #OpenBSD 7.9 again and then switch to the latest snapshot to see if my not being able too boot /bsd past the 14th May snapshot and it now fails to verify the downloaded stuff 😂
Good thing I've still my trusty #FreeBSD laptop.

Even more random redoing the sysupgrade -s and it passes straight away and upgrades. Does it boot the /bsd ? No it does not only boot.rd and boot.sp boot.

@justine I got a similar error once. I think my issue was the sets and/or the SHA256.sig weren't found automatically.

I had to move them to <version>/<arch>, IIRC