well Gregory ... I've got one thought at least. If you're sure your Onkyo code is not 0503, does the "search for your code" (9-9-1) function work? If so, I'd do that then retrieve that code with the 9-9-0 function, then see if there's an advance code list around for that 4 digit # at this site
[Link: starbase314.com][Link: starbase314.com](I listed the 0503 because that's what I thought the Onkyo code was ... ) and proceed with reassigning keys on your OFA as you wish. This is how I've gotten around my problem with my OFA not able to "learn" the remote-to-remote way. lemme know ...