4120 FW Update A112

Found this one on sony vaio site…

“DVD super multiple drive GSA-4120B firmware A112-008” update program

Recognition efficiency of the media it improved.
Record reading efficiency to the DVD+R media it improved.

ftp://ftp.vaio.sony.co.jp/pub/vaio/download/SP-008468-00/HIFOPD-00846800-UN.exe