Originally Posted by DJWikiera
If the disc came from RCA, I'd guess they aren't going to re-write code to make it say RCA, hence no further support .
Actually the disc was from Toshiba, I had an A2 before I bought either of these and they also sent a set of firmware for the A1/XA1 when they sent the 1.5 update for the A2. I knew this was the same player before I bought either, in fact I was searching for these in particular hoping to score a good deal because it was something of a forgotten model (and I did get fairly lucky in that respect, getting two new sealed ones one at $150 the other at $71). Anyway I took the gamble of running the Toshiba firmware on the returnable one of those two, figuring if it bricked I'd just send it back. Worked fine. Once I knew it worked I did it to the other one. Other than saying Toshiba at boot you wouldn't notice much other difference except better compatibility. The $150 one, the one at my girlfriend's, was an early build than the $71, and I had a few stuttering and freezing issues before doing the update. The update seems to have rendered it pretty solid in terms of performance, in fact we watched Hot Fuzz, 300, and U-571 this past week, all without issue.
I could care less about having it say RCA or having it supported by them, Toshiba seems more willing to release updates so if I want the latest I have to go through them anyway. With both operating fine on the Toshiba firmware I probably won't update unless something major comes along, however they are definately more solid than with the early RCA firmware. I guess if it comes down to a collectors standpoint then you use the RCA firmware, whatever they have to offer. If you want the latest updates you go with the Toshiba firmware.