Kindle DX 3G card
I have thoroughly screwed my Kindle DXG and wonder if I can replace its motherboard with one I have from a Kindle DX US only and switch out the 3G module from the DXG to get reception Canada. I imagine the serial number might preclude this. I installed 3.1 firmware on the DX and I can't go back because I failed in copying 2.5 firmware. I can't use the 3G anymore.
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