Anyone successfully program a universal remote for the DVR/VCR combo unit DMR-E75C?

I get partial success with Charter cable remote OCAP w/DVD recorder code 20490, but I can't get all menu options. (Like finalize DVD option.)

I've tried old universal RCA R2565 and an old 3-digit Big Button universal. I also have a One For All URC-3021B00. The RCA and Big Button don't do anything. I even tried the same 20490 code with the RCA. I haven't tried the One For All.

I don't need the remote to do everything. It's OK if it doesn't work with VHS side of unit.