One-for-all(OFA) remotes have one of the oldest code libraries out there, many codes along the way have been dropped, when OFA came out with original 6820, 8820, 6690, and 10820 remotes it had the largest code list ever, bringing back many older codes haven't been seen in over ten at the time. This is 8820b00, not 8820b01, or 8820n. Same goes for the 10820 later versions had codes dropped. Just look for on ebay for 6690 hybrid, half button and half led kameleon.

Back 1988 majority of the universal remotes were learning remotes only, no code data base, where OFA had a code library from the beginning.