Having already updated mine (which played Region 1 DVDs before the update), let me check it out and report back...
EDIT - yes, I just tried two Region 1 DVDs: "From Russia With Love" and "Twister" and both played. So, you can go ahead and update your player, it will not effect DVD multi-region playback.
EDIT - yes, I just tried two Region 1 DVDs: "From Russia With Love" and "Twister" and both played. So, you can go ahead and update your player, it will not effect DVD multi-region playback.
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