Last week I ordered what was supposed to be a ltd-165 from ebuyer, however when I opened it up it turned out to be a "JLMS DVD-ROM LTD-166S".
In to my PC it went, no problem.
I then, fortunately backed up the firmware with the liteon flash tool. Next I tried and failed to upgrade to the DS18 (JLMS XJ-HD166S) firmware. I tried to upgrade with the standard installer (incl patched version), Liteon flash and finally MtkWinFlash (prolly in ATAPI mode can't remember), all of which failed and most of which resulted in PC hanging and scary reboots.
What happened is down to pure rtfm failure but ...
I then proceeded to kill the drive with mtkflash, trying to flash 8 banks with the file split, durrr.
Finally after having left it a few days I tried booting with my secondary ide controller disabled (which ofc the drive was connnected to). After a long wait W2k finally booted and I flashed using the backup and MtkWinFlash in IDE mode. Rebooted and Magic the drive was back.
As a test I booted to DOS and tried the following command on the original backed up Firmware:
MTKFLASH 4 W /B 166sBAK.bin
Which failed and resulted in me having to repeat the above.
Finally I then repeated the procedure a third time and loaded the DS18 firmware and I'm now a proud owner of a JLMS XJ-HD166S.
The fact that Liteon/JVC won't support "brand new" drives put into the supply chain by the "old" company seem a bit poor but anyways.