This patch updates NEC DVD-ROM Firmware to eliminate the decrement of the DVD
region code change counter. After this patch you can change DVD region code on
your DVD-ROM as many times as you wish - counter will be always 4.

How to flash:

1. Copy FLASH.EXE, DXXXvNNN.HEX and HED_FILE.HED to floppy disk.
       XXX is your DVD model - 810 = DV-5500, 410 = DV-5700A,
       NNN is Firmware version.
   Header file depends on DVD model - do not mix. You can check contents of the
   file - for D810 ir has to be '44 38 31 30', for D410 - '44 34 31 30'.

2. Restart your PC in DOS mode (do not flash from DOS window).

3. Run FLASH.EXE from floppy (floppy disk has to be opened for writing).
       In FLASH window enter HEX file name (DXXXvNNN.HEX), DVD drive location
       (Primary/Secondary IDE interface and Master/Slave drive), choose Option
       0 ("Download") and push F10 and afterwards "Y" to confirmation requests.


