Firmware information
  CD−R CD−RW DVD−R DVD−RW DVD+R DVD+RW DVD+R DL DVD−R DL DVD−RAM
Strategies 1.01 1.05 1.02 1.08 1.04 1.11 1.01 1.01 1.11
Bitsetting   Unknown Unknown Unknown  
Date1 (*) 2005-11-04
Date2 (*) 2005-09-28

(*) 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 ND4551A firmware 1-84