Firmware information
  CD−R CD−RW DVD−R DVD−RW DVD+R DVD+RW DVD+R DL DVD−R DL DVD−RAM
Strategies 1.17 1.27 1.22 1.29CF 1.29 1.29CF 1.23 1.18 1.32
Bitsetting   No No Yes  
Date1 (*) 2009-09-17
Date2 (*) 2009-09-17

(*) 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 1.7b