Thanks to this thread, I went after the updates today.
H3: U936
4KJ: U669
Then I thought I'd try updating my Wally that is currently inactivated in the RV. It went through the motions, rebooted a few times, I heard the Playmaker making impressive noises, and even saw the progress bar. I came back later, and after various reboots and rescans, the software still reports as U822 (8/15/20). I thought to myself, "Huh."
Do you serious updaters know if a Wally should be able to be updated when it's currently turned off in my account? I don't want to waste time trying this if it just downloads an update (or acts like it's doing so) but does not install it. I can still bring it up and use the OTA adapter channels, and, apparently, view DVR recordings on the EHD, while inactivated. I just have to keep acknowledging the "we've detected an external hard drive" message.