http://www.hifi-remote.com/forums/viewt ... p?t=103852
Ok, I'm back - I've had a lot going on.
I wanted to dig into this some more and decided I wanted to test every key for all three upgrades, and I've discovered some behaviors with RMIR that I believe are the source of a lot of the confusion.
I started with my working configuration that contained the two upgrades Roku TV Master 234.199 - from which I had assigned all buttons except the Paramount+ - which mistakenly launched Prime Video - and the NEC1 Dev 4 - to which I only had mapped one key for Paramount+ because it worked.
I went into the NEC Dev 4 device and checked that as expected it showed:

I tested every key and found the following anomalies/messages (some may be expected):
- Vudu: launches Fandango at Home
- Rdio: produces onscreen message "no longer available"
- Fandango Now: flashes IR receiver but does nothing
- Google: doesn't flash IR receiver and does nothing
- Tiki Live: flashes IR receiver but does nothing
- Play Statio Vue: produces onscreen message "no longer available"
- Dot: flashes IR receiver but does nothing

Upon clicking OK, the Setup values were shown were identical to my existing Roku Master TV upgrade (and incidentally changed my device description to "for Hisense/Sharp", which I guess is to be expected):

and there's a message at the bottom "Protocol already used by another device upgrade without an Alternate PID, so an alternate cannot be given for this upgrade."
I'm guessing that's what I was remembering earlier in our conversation when I said I'd had issues loading more than one device upgrade with the same protocol. Not seeing any way to change the PID, nor any idea what I'd change it to, I soldiered on.
I clicked on "Open" again, and when I highlighted the same upgrade file, I was surprised that in the background I could see on the Setup screen the values changed to the correct expected values:
[/img]but again, once I clicked on "Open", they reverted back:

At that point, I went ahead and deleted my original Roku Master TV, re-added as a new device the Roku 4.251 upgrade, and all was well.
I still now need to test all of the commands. But wanted to check in and let you know that's where I'm at right now.

