umm, unfortunately with the Christmas season and all, and other interesting events in my life, all I can tell you about 1.21 is that it burns Optodisc 8x DVD-Rs at 8x fairly ok.
For the record, it's REALLY hard to keep up to date on what every new firmware does to all 5 of the drives I actively keep tabs on (that I own). And in the next 30-45 days I'll probably be adding another 2 drives to that list. Not to mention the reviews I write for this and other webpages. Somewhere in there, I try to have a personal life too
However, once I'm done this current review (which will be soon!) I'll be going FULL tilt on burning testing for my own purposes, and updating my master list of things burner/media/quality related, and when I have stuff to report it will be available for all to see
Well, enough banter, I'm off to work

Punch Cards -> Paper Tape -> Tape Drive -> 8" Floppy Diskette -> 5 1/4" Floppy Diskette -> 3 1/2" "Flippy" Diskette -> CD-R -> DVD±R -> BD-R
The Progression of Computer Media