nordlead on 23 December 2010
I wouldn't worry about it. Sony made the PS3 region free for videogames, but must be region locked for Blu-ray and DVD. They are well aware of this and know that people are going to import games. If they failed to take importing games into account during disc based firmware updates then it would have been a huge blunder that would be all over the net. If the firmwares weren't compatible I would expect Sony to just block your PS3 from upgrading to prevent harm to itself as the firmware can also be pulled off the internet.
