If its working okay and you can do a factory restore, youre better off where you are.
Serious.
I got one of these, (board name WWE10-6-2-V2.0 DK1031L-2011.11.02) 'brand new' and had trouble with it... tried a factory reset and the software WASNT THERE... which, of course, blew it up...
(THEN found out that it had been opened before, and was ANYTHING BUT new!)
STILL trying to get a copy of the original so it will be 'right' again!