Please note: I was working with "Roku Tanner" on a problem I was having back in 2019. He initiated an update for my TV with a SW load to test out the fix. I'm not absolutely sure, but I believe it was my current version: 9.3.0 build 4175-30. Not sure if this was an official release OR if it's causing problems with updating newer "official" releases (such as what I'm having currently).
Oddly, when I go to the "Secret Screen" and choose "Update Software", it indicates a SW update is available BUT it's the same as my currently SW load.
I DID NOT update (chose "Update later") as I did not want to cause any other issues.
I'm happy to report that my TV is now on SW 9.4.0 build 4200-30! I was able to successfully update to this load just a few minutes ago.
Funny thing, attempting the manual update process yesterday, I got notice that 9.4 was available. As such, I "updated" and it went through the whole process (install reboot...) BUT was unsuccessful when the TV restarted. I went through the process a few times, all which indicated the 9.4 was available, without success.
I even pulled plug on TV on a few attempts hoping it would permit successful load.