I have begun building a set for the QIP7232. Perhaps because Verizon is using a different remote now I have been able to learn the codes for the navigation buttons; the guide, info and related buttons; and the DVR. I am looking for discrete codes for things like on/off.
I found one post that said Motorola acquired General Instrument and the GI code sets might work. The ones packaged with my version of the MX-850 software go back to 2006 or so when URC stopped distributing up-to-date software to end users, so the GI code sets that are available are very limited (mainly STBs, not DVRs). But the discrete codes might work??
One problem is that the MX-850 doesn't have some useful buttons, such as REC. It would be possible to put those things on a page of commands, but that would not be very useful. I have never played with the press and hold buttons, but that might make up for the deficit.