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 1.07 1.12 1.12 1.12 1.10 1.03 1.00 1.14
Bitsetting   No No Yes  
Date1 (*) 2005-11-25
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 1.01