Hi there, cheers for readin.
Got a sony dvd-rw dw d22a.
Worked pretty good before i flashed it:
Never flashed a drive before, so got educated first (or so i thought).
Downloaded LtnFw to flash the drive to the liteOn sohw-1633s. Got the firmware (1633s.bs41.stock), backed up my original firmware (twice, did the checksum check), then ran the 1633 installer. The flash reported successful. Rebooted, checked in bios then in xp: everything was good. I then ran the LtnRPC prog to disable the region settings on the drive: again read up on this alot, and it worked fine (got the output from LtnRPC that i expected). I then put a dvd (pre-pressed) in the drive and discovered it was being read really slow: tried it with a data cd and explorer crashed trying to read it. My DMA settnigs were fine (control panel-device manager-etc) - udma66 enabled.
I then flashed back to my backup firmware: drive was now recognised as the sony dwd22a, but the same read performance remained. Checked DMA- enabled no problem.
Can anyone shed some lite on this please? My guess is that the eeprom may have been corrupted in some fasion that has changed the dvd-calibration data? LtnRPC could have done this (not Ltnfw as i understand). But the drive is not ‘dead’ - just performance is terrible. Tried the drive in another machine with the same problems (to check my cables, make sure that my system wasnt just reporting udma incorrectly). Also, should I have used ltnfw to flash back to the sony (BYS1), or was this a mistake? Any replies much preciated.