I've just done that yesterday eve , as I say in the 1st post now I'm at B2I7.
The problem's the drive isn't able to burn any kind of DVDs (either + or -)!
I think my friend tried to burn someone when it was a "830" and that caused problems to the laser calibration , but it's only what I can think.
I'd like to ask for it to Vlad&Igor, but I don't know how to reach them , I hope they read this.
It's not a real problem , I have 3 other burner (read my sign.) , but I'd like to repair this one (if possible of course).
Thank You all anyway!!!!!!!!!
@ala42 P.s.(OT) : why don't try to merge all result of changing write strats in one new FW for ours 1620s?