Hi dave
I agree with everything Makd511 has said above.
There is however a chance that a firmware extractor may appear on this site in the near future, then you will at least be able to extract the firmware off your player to keep as a back in case you need to restore your player in the future.
We have one of the best freeware programmers around (dancemammal) working on this at the moment so I suggest you don't do anything with the firmware and wait for a backup utility to appear.
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