In the JP1 file area, there appear to be 17 different code sets for Akai TV's (more than 17 upgrade files are there, but some duplicate code sets).

I don't know which of those might work on whichever Akai you have (the first two posters gave model numbers. I do know which code set works on the 4273).

But I also don't know which code sets are present in the DirecTV remote.

If you had a JP1 remote and JP1 cable, all this would be easy. But without that, I'll guess you'll have to hope someone who knows more about the DirecTV remote answers.