I have a serious problem with my IISONIC 8404 (2 led model)
which I think is the same as OPTORITE DD0203.
It was originally delivered with 2.16, then I upgraded it with 2.23 firmware from IISONIC website. (Upg OK)
but since I had several problems of non detected DVDs at the correct speed, I tried to flash it with the latest 2.50 (downloaded from Optorite website) Flash was successful but my problems remained the same.
Yesterday I found another issue and I decide to flash it back to 2.23. Downgrade began OK but stopped at 80 % with DVD door opened and the 2 leds remaining ON. I rebooted the Computer and of course my DVD Burner is not recognized anymore.
Could you help me please, I tried the MTKFLASH procedure described here (http://frederic.domens.free.fr/html/flash.html)
but unfortunatelly it does not seem to work, as this burner certainly does not have a MEDIATEK chipset. (Sanyo ??)
Now I do not know what to do. Does someone can help me please?
Many thanks in advance (Sorry about my english as I come from france)