Were you able to get the new Sony Receiver discrete codes working? I am looking to upgrade to a STR-AZ5000ES and was hoping I wouldn't have too much work to do on my remote.

I have a STR-DA6400ES (2008) working perfectly in three zones on JP1 remotes. I haven't done any significant JP1 Remote Master/IR.exe work in years and basically have to relearn it (and update Java) any time I have to touch it.

I was concerned a major equipment update would be beyond the the UEI/JP1 system today but if the codes are truly backward compatible I may give it a go.