Firmware information
  CD−R CD−RW DVD−R DVD−RW DVD+R DVD+RW DVD+R DL DVD−R DL DVD−RAM
Strategies 1.02 1.04 1.05 1.02 1.02 1.02 1.03 1.01 1.10
Bitsetting   No No Yes  
Date1 (*) 2009-01-23
Date2 (*) 2009-01-23

(*) 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 original Optiarc AD-7590S Firmware 1.FM