Grundig GDV-110 region-free hack

Press the Open button on the Remote

Then press Setup

Press the 9 button on the Remote for Region Free, or 1 for Region 1, 2 for Region 2, and so on

Press the buttons 2 0 0 and then 0 on the Remote

Press Step

Press Shuffle

Press Next

Macrovision Hack:

Press Setup

Press Stop

Press Title

Press Previous

Press Setup

Firmware Check:

Press Open

Press Setup

Press Shuffle

Press Step

Press Next

A secret menu will appear, inside which you can scroll down until the words Debug Item appears. This is where the current region status is displayed