Robman, (or any JP1 knowledgeable members) please help! I got a new ReplayTV 5000 PVR and immediately upgraded the remote with the extender (v1.2 I believe). I used the generic IR text file and added devices for my Sylvania TV/DVD/VCR (code 0821), my 4DTV (plus the new protocol) and my ReplayTV (advanced protocol included). The upload to my remote worked without incident (except the known warning about using a different image than the original remote used). The extender loaded (I get the 4 LED flashes when I first hit the ReplayTV button) but it will not control my TV (power worked once or twice, but not consistently), my 4DTV or the ReplayTV (same intermittent power button working like the TV). Luckily when I bought my original ReplayTV 4000 unit, I also bought a One-4-All 8910, and it has devices/protocols for the advanced ReplayTV, the 4DTV and my Sylvania (all loaded via JP1) working just fine. Can someone please let me know what I might be doing wrong here (the 8910 worked flawlessly, so I at least do have some JP1 knowledge, and "yes", I did try different batteries before writing this plead for help)?