I have the Pioneer A05, and i haven't done any upgrades on my firmware yet. And i dont know which version i have from the original manufacturer. Also if there is a new version of the firmware, should i update it for better compatability purpose? Also can i save my original firmware before i update it, incase i want to put back my original firm ware. Also what do you think about Ritek x4 DVD-Rs, are they good for the Pioneer A05 to be used at x4. And is the quality of the media better, so it is more compatible on most DVD stand alone players. Thanks.