Sony CRX300E

I have a Sony DVD-ROM/CD-RW drive and I can’t find an updated firmware for it. Can someone help me find it???

Drive - Sony CRX300E According to this, it’s an OEM version of the LTC-48161H - known firmware KYS2 - Dated “Jun27 ,2003”

Latest possible firmware would seem to be:
Crossflash to speed-patched Liteon KH0R

NB. This will void your warranty, and the change to Liteon identity may also void bundled software