Changing region on blue ray player

Hi,
Recently in US and bought a sony BDP S300 player. It plays normal DVDs from US region 1, and also blu ray DVDs region A. Some blue Ray disks are multi region ie A<B<C so any player will play them, but some are region specific- ie in EU region B.
Any way to 'fix' the player Region A to play any region disks A, B, C?
Look forward to replies.

 

There is no way to change a player to region A,B,C

 

strange,
http://www.alldvdcodes.com/ claim to be able to do this via software...

 

Rumor has it that it may be possible for the player to lock you out if you attempt to alter it.