I have found that with some IR codes you have to just keep tring! Also, on my RCA utv I found out that by first holding the RCA remote's button, then quickly hit the NEo button I wanted the code learned to, that it learned the IR code great! So that's a option to try. Try looking for Ncf files with the code already learned too, as you can "Copy & Paste" them to your config.

-steve