Originally Posted by BaltimoreStan
HUH??? That's news to me. How could there be a hardware problem -- all it has to do is grab bits from a broadcast signal. Either the bits are there or they're not.
It's a moot point since I no longer have a 633, but could you say more about this hardware problem?
Apparently Gemstar licensed manufacturers with a chip that has to be incorporated into the circuit of DVDRs, TVs etc. For the 2005 models, there is supposed to have been an incompatibility between Pioneer's circuitry and the Gemstar chip that made a fix via firmware update impossible, which is why Pioneer could only offer to replace those models and not offer a fix. (Couldn't be fixed with software.)
As someone who got a free exchange of a 633 for a 640 model, I agree that it is pretty good customer service on Pioneer's part, even if it were possible to fix the TVGOS problems via a firmware update.
BTW, on Pioneer' Canada's main support page
there are references (at the bottom) to firmware "upgrades" for other models, so apparently it can happen.