Dell has just released a new firmware for the LITEON LTD163 drive: GDHJ.
According to Dell : "This firmware allows the Lite On 16X DVD ROM drive to read multisession DVD +R media"
I have tested it and on top of being a nice all round firmware it's NOT caching audio data! Making it by far the most recent non caching firmware for this drive. I'm getting average 25x in secure mode over a whole cd
Any Liteon/Jlms 163 drive can be flashed with the binary version which can be downloaded from my binaries page using MtkWinFlash (in Windows) or Mtkflash (in DOS).
It will make the drive recognized as: LITEON DVD-ROM LTD163, firmware version GDHJ.
P.S: It is not meant for the 163D drives. It will work but I'm not crazy about the idea.