Unfortunately this problem has been reported all over the web.Not sure the number but either 2.27 or 2.28 was reported as a clone killer that actually took out some boxes reported as legit boxes.
There has been NO confirmed fix for this problem.
As was reported earlier, trying to load a file or trying to get to boot mode wont happen because the box never starts up.
Again, there is no current fix for this problem. Keep that box though.Someone may build a jtag someday and figure out a way to get these boxes to boot.
Sorry to those who got smacked.

good luck,
AFtester

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Testing:
CW-800
CS-6000
SV360P
SV360E
Soon ...K-box
Dish pro plus
Dish 1000.2
33" fta dish,linear lnb and motor