hmmmm....I know (from my personal experience) that it's impossible to downgrade the firmware for the Plex 12/10/32TA under the 1.05 version or at least I haven't been able to do it....and really don't know if it's the same for your burner, but being the first firmware releases, it should be possible but I'm not totally sure of it...regarding the sd2 matter, for what I know you can make backups but you have to launch them from your burner....sd2 protection is more hardware oriented than software, so I don't think that a future firmware could fix the problem....and, for what I know, firmware updates are usually released to make the burner read cds better, but cannot modify the chipset.

I really hope that this has been in same way useful

Robaerus