I have the Nec 3500.
With original firmware 2.18, i can rip with dvd decrypter at 3/4x speed incrementeed by 0.1x every 40 seconds.
Well i tried to upgrade firmware with a modified one suggested by you.
But with every modified firmware i have a speed rip of 0.1x always.
hard disk sata maxtor 160gb
What it can be for u?
p.s. I have used binflash to upgrade firmware, and the nec is setted to primary master.