https://www.influxdata.com/blog/linux-package-signing-key-rotation/
Used this to fix a problem with
GPG error: https://repos.influxdata.com/ubuntu jammy InRelease: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY D8FF8E1F7DF8B07E
Plus a few updates and upgrades and the system is now flashing the target.
Thanks for the help.