If it helps, I have the EXACT same problem as dave_c mentions.
I'm in the UK, I bought my 320 from Amazon ( in the UK ) and its B1 hardware.
The firmware is 1.00.
Extremely confusing to say the least because I was trying to update mine ( thinking it was out of date ) and was getting the same error message. So I hope I do have the latest version at 1.0 ...
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I hope this helps anyway.
The reason I was trying to update, was im having issues with Samba, I just cant see the nas, in windows unless I FTP to it or via the dlna...
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