well, you'd loose money... I'm not a flashing 12'o'clock idiot.
I would take your bet if I had a way to do it
I would be REALLY surprised if the only variable left (the OTA program itself) is not working with the DVR somehow but does for a TV... (let's say some live region coding if such thing exists, which would mistakenly be locked out by this firmware instance...). I own the same mdr515h device back at my place, and it works fine with same channels although different TX towers, same connectivity (antenna straight in). This one is the 2nd I bought for my folks, from the same estore.
Besides the slow channel switching and split DTV from analog sequences, the stretching of analog tv programs, and the unability to skip line 1, 2, 3, this looks like an awesome device.