Looks like there was some historical build of arm64 u-boot that didn't include the "unzip" command in the build. Anyway, this definitely works at this point (or focal wouldn't boot :)
** Changed in: u-boot (Ubuntu) Status: New => Fix Released ** Changed in: u-boot (Ubuntu Focal) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875319 Title: Raspberry Pi doesn't boot anymore after installing a 64bit kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/u-boot/+bug/1875319/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs