Mustek DVD-V520 region-free hack

Turn On the player with no disc in the drive

Press Set-up, Previous, Next, Previous, Next, Previous

Press the Right cursor until 255 appears

Press Set-up

If the above hack fails to work then you may wish to consider using attempting the DVD-V300 hack above

Disable Macrovision:

Press Set-up, Next, Previous, Next and Previous

Press Up and Left - you should see 4000

Press Up and Left until you see 3000

Press Set-up