Hi, you have many choices.
You can stick with the "B" firmeware IE:2.4, 3.0, 3.2
or Change to "P" firmware IE: 2.4,2.5,3.0,3.2 By using the .CVT file and Winflash.
or Change to any of the Benq Firmwares by using the Benq .CVT files and Winflash.
All of which are very similar result wise.
Whichever I use I still get very high PI errors (approaching 320) in the last 1.5gb using 3 different types of Media.
None of these Media were a problem with the 2x NEC2500a's I used before.
So I am unsure whether it is a problem with this burner, or the Firmware.