Have you seen this thread
? It seems to imply that some XDR F1HD units respond to Sony20 26.19.
Let's try to partition the problem into 1) Do you have the right IR signals, versus 2) there is a problem in programming the c4630.
Please post some of the learned signals that you paid for. (Even better, post them all.) We may be able to tell if they are marginal learns, and/or if they use Sony15 device 200 or Sony20 device 26.19. Either way, it will probably help the user community to understand these Sony units.