after 5 times how can i reset region codes?

DVD Player: About DVD-Video Regions

Region encoding is the mechanism that enables motion picture studios to control the worldwide release of their movies. It is required by the DVD Forum (http://www.dvdforum.org/forum.shtml) in all commercial hardware DVD players. Every DVD-Video disc contains one byte of data representing a region code, which limits where the disc can be played.

http://support.apple.com/kb/HT2397

Once you have set the region in DVD Player five times it cannot be changed.

Instead, use VLC to view videos from different regions:

http://www.videolan.org/vlc/download-macosx.html

Buy a new DVD drive. Once you reach the limit of region changes you can do anything but play movies from that last region you used.

Hi Klaus

Sorry if I'm being obtuse:

1. if I download the VLC player will it play multiple region DVDs 'in perpetuity' and/or

2. is another solution if I want to play UK and US DVDs to buy 2 Apple DVD players and keep the DVD regions separate?

Many thanks

RHS

1. AFAIK, yes

2. You don't need Apple's DVD players, any external DVD will do.