Did you try the recovery mode? Press Home while the device is rebooting. That helped me when my device was in a loop while trying to downgrade from 3.2.1 to 2.5.8.
EDIT: That's only for kindle 2 and kindle DXG i think. So i assume it won't work for you.
Last edited by reprep; 06-24-2011 at 06:34 AM.
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