I’m not sure that the firmware upgrades offer much but I found it extremely hard to locate them so I’ve mirrored what I’ve found so far:
My drive was running firmware 1.01 and I was successfully able to flash to 1.04 but haven’t been able to flash to 1.12 (I suspect I need to go to 1.0 first? Still hunting for more firmware (I have a feeling the drive is rebadged so it may help to find out which drive sites behind the badge).
Ideally I was searching for a way of overcoming the 1.6x bd-rom (blu-ray movie) riplock (I’m still ripping my blu-ray collection using MakeMKV and it’s taking forever!). Unfortunately Media Code Speed Edit (MCSE) http://ala42.cdfreaks.com/MCSE/ was unable to read/modify the firmware.
I’ll keep you posted if I find anything further!