said by Nchdfh :
So updated firmware code.
Not updated hardware?
I think the remote's firmware is contained in a hard-coded chip and is not updatable within a version. So, in that sense, it is both a hardware and firmware update.
I don't have any 2-button remotes but do have two versions of the 4-button type (RC1445301/00B, no Rev & RC1445302/00B, Rev 2). The instruction sheet that came with the higher version number had more device codes listed than the lower one. There are a couple of subtle external differences as well but they had to do with appearance only, all the functions are the same.--
Never raise your hands to your kids. It leaves your groin unprotected. -- Red Buttons