I have the 9960 (Kameleon, LED, 8-devices) and am using the '1877' code. I in fact tested both the '0877' and '1877' codes and found only ONE "key" that worked on one vs the other. You say "much more functionality" .... please elaborate. :-)

I don't have "L" keys, just the "M1", "M2", and so on (4 macro keys + the power button). I mapped "M1" to the 8-sec rewind as it's right above the normal rewind key. "M2" = A, "M3=B", and "M4=C" for the rest. With that done, the Kameleon completely replaces the stock remote, less the PIP keys (I rarely ever have used this so no loss).