Firmware information
  CD−R CD−RW DVD−R DVD−RW DVD+R DVD+RW DVD+R DL DVD−R DL
Strategies 1.01 B.04 1.05 B.16 1.09 B.13 B.12 B.06
Bitsetting   Yes Yes Yes  
Date1 (*) 2006-02-16
Date2 (*) 2006-02-16

(*) Date 1 seems to be related to the strategy version while date 2 seems to be related to the main firmware code

Dee's ND-3540 1.WB modified Firmware.

3 versions available
RPC1, Fast, and Original.
All firmwares use the same write strategy tweaks and speedups.
All versions have full Bitsetting support.