I have a multi-region Tosh SD-510e. I was under the impression that this model can be firmware upgraded from a bootable CD/DVD. What I don't know is; What is the current firmware version for this player, and how can you find out which version you have? Would a genuine firmware upgrade screw up a multi-region modified player? Is there a site where these upgrades are available, or is it directly from Toshiba. Am I heading up completely the wrong tree, and talking rubbish? The reason I ask about this is that I have had the whole player lock on me twice now. Generally, it's fine, but it's a bit concerning.