Firmware information
  CD−R CD−RW DVD−R DVD−RW DVD+R DVD+RW DVD+R DL DVD−R DL DVD−RAM
Strategies 1.07 1.08 1.15 1.12 1.12 1.11 1.07 1.02 A.03
Bitsetting   No No Yes  
Date1 (*) 2006-02-20
Date2 (*) 2005-10-19

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

The following firmwares are included:

This is the stock ND7550A firmware 1.P1
Only flash this firmware if your drive is currently configured as a slave device