United DVD-3160 region-free hack

Also works on: DVD-3161

Turn the machine On and Open up the DVD tray

Using the remote control press 9 8 1 7 or 3 8 3 8

A service menu will appear

Change the region to whatever you want or set it to 9 for all

Press the Ent button until it matches your choice

You can also alter Macrovision from this menu

Didn't work, or found a better way? Send us your version.