@bcdouglas I was finally able to get beyond 23.01. I started from the 2.7 Dev current build. Made a backup of my config.xml. Reinstalled the Feb 15th build but did not install any packages.
Opened a ticket to get my certificate bumped so that I could get a new build. However, I was stuck in the same position as you. I could not update anything, nor could I install any packages from the GUI even though I wasn’t planning to anyway.
To get moving ahead, I was able to install the System_Patches package from the CLI. Then I was able to apply all recommended patches from the Systems_Patches GUI. I rebooted and then was able to see and update to 23.05. Once up on 23.05 I restored my original 2.7 config.xml, rebooted again. My old packages were all reinstalled without a hitch.
I have a Cyberpower UPS and I did need to replace the usbhid module with the one I was using for 2.7. (Search the NUT package discussion in the forum if you need this)