Does the HP8200 upgrade work for you?
 

Hello,
I am planning to try the upgrade listed in the CD-R Modifications page of www.gamecopyworld.com. Has anyone been successful with it? Please post any success/disaster stories here. Thanks.

NOTE: They recommend a C4464B for this; I think I have a C4464A. Anyone successful with C4464A please post that it works here. I don't want to risk corrupting the firmware.

This is what is said

The HP8200 which was used to upgrade to a HP9100:
HP CD Writer+ 8200a - Product Number: C4464B
4x4x32x
Made in Malaysia - March 2000
Most likely this will NOT work for other types of the HP82xx series!

If this is not yours it is your risk.