Here is firmwares for Lite-on and rebagged Lite-Ons:
Verbatim
Traxdata
Sony
TDK
Memorex
Creative
And for Asus DVD-ROM’s and CD-RW’s (actually found some new official firmwares for some asus drives 
).
Here is firmwares for Lite-on and rebagged Lite-Ons:
Verbatim
Traxdata
Sony
TDK
Memorex
Creative
And for Asus DVD-ROM’s and CD-RW’s (actually found some new official firmwares for some asus drives ).