well i aint sure if that drive can be revived from DOS with MTKFLASH.EXE or not… if it can you can probably reflash it back to the older firmware or reflash it to the new one.
as far as disc skipping… use good quality discs (i.e. Verbatim) and burn @ 8x.
http://codeguys.rpc1.org/firmwares.html … that might be useful for you i aint looked much into it yet for your drive.
EDIT: i just looked… it’s basically the same lite-on i have almost (Sony DRU-710A (rebadged LiteOn SOHW-1633S/1653S) … i have a Lite-On 1673S myself)… i.e. you can most likely revive it from DOS to get it working again (assuming the drive still physically works)
http://dhc014.rpc1.org/howto.htm#mtkflash (im assuming that’s pretty much what you need to do)
[B]WARNING: just be carefull when using that cause i aint sure but it might be possible it could erase other drive’s… so my advice is to remove all other drives that your not going to flash before flashing the dead sony drive.[/B]