Firmware information
  CD−R CD−RW DVD−R DVD−RW DVD+R DVD+RW DVD+R DL DVD−R DL DVD−RAM
Strategies 1.04 1.09 1.20GEN 1.14 1.16GEN 1.18GEN 1.10GEN 1.06GEN 1.18
Bitsetting   No No Yes  
Date1 (*) 2006-12-28
Date2 (*) 2006-06-21

(*) 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 Optiarc AD-5540A firmware 2.01b. The letter b was used to indicate that this is the second known 2.01 firmware for the Optiarc AD-5540A