research @ the moment for a elegant way to do this stuff...
Way1:
noticed that the kindle's are up2date if they arrived to the customer.
i think, they use the RFID/NFC Chip inside to update this stuff...
http://www.ebay.com/itm/271748490865
a friend tells me, that this technology is used.
Way2:
did anyone try to do some tcpdumps of the device's (over wifi)?
Can someone share the captures if he doesn't can interpret this?
Way3:
Someone here with firmware reverse engineering skills?
http://www.techspot.com/drivers/driv...rmation/17550/
Kind Regards!