Don't know about the Xbox.

The OK/Select button problem is that the Atlas is a cable remote, and it uses Channel Lock. So in TV mode (and sometimes other modes), CH+/-, digits, and OK are all routed to the cable box. If you aren't using a cable box, you could just defeat Channel Lock. But if you have a cable box, you want Ch+/- to go to it even in TV mode. So instead we keymoved the standard EFCs for 0650 and 0522 onto the OK buttons. Keymoves take priority over Channel Lock. I got the EFCs from the Lookup Tool www.getzweb.net/jp1/.

I also used the Lookup Tool to find out that Audio 1077 is NEC2 protocol device 131.69, and that one of the brands is Sherwood.  I searched the forums at hifi-remote.com for 131.69, and some Sherwood comments showed up.  Downloaded Sherwood upgrade files from the File Section there, noted that the protocol was correct and that many of the EFCs matched 1077. One of the upgrades listed the discretes.  I used RemoteMaster (see the Software forum) to read the upgrade files.