Sony SLV-D900 VCR/DVD Hack

Ensure the unit is switched on with No Disc inside.

On the remote press the following keys :

Subtitle , 3 , 8 , 7 , 6 , 7

A message will appear showing the current region.

To change region you should select 1 for region 1, 2 for region 2  or 9 for multiregion.