Nakamichi DVD-10 region-free hack

Connect the machine to the mains but do not power on, also ensure there is no disc inserted

Press and hold down both the Dimmer and Reverse Skip buttons on the front panel and then press the Power ON

The display should show "NAKAMICHI"

Hold the Dimmer & Reverse Skip buttons for a few seconds and the Display should change to "___ ___ ___ ___" from "NAKAMICHI". Wait for a minimum of 5 seconds (at this stage you're not pushing the Dimmer & Reverse Skip buttons any longer), then using the handset's numerical keys press 1 9 9 9

The display should now show: A-00 D-??, Where D-?? indicates the present region

To change the region code, punch in the new code (i.e. 01 for Region 1, 03 for Region 3, etc.) and after that press the Enter button (located next to the numbers keypad on the Handset). The display should now change (slowly) to D-01 (or whichever new region you have assigned to, as above

Completely Power Off and the machine is set to the new Region.

Note: This also works as a region 0 hack, but be aware that some discs may refuse to play unless the region you have selected matches the region of the disc. The hack is also indefinite and has no limited lifespan, and can therefore be performed as many time as required