Download DVDIdentifier, and you will get mediacode and firmware version.

You can get latest from LiteOn. http://www.liteonit.com/ODD/English/...e_dvd%20rw.asp

You can crossflash your drive to a 1653S. You will loose warranty when using moded firmware. http://codeguys.rpc1.org/firmwares.html

And always use Verbatim DL.