Originally Posted by knc1
The O.P, evidently went off and identified his Kindle models.
But for some reason did not share that information with us.
Must think we can read over his shoulder or something.
His profile shows his device as a "kindle something or other". If he plans to flash 4.0 firmware as his edit info shows, it must be a K4.
From what little information we have, he may have a discharged battery issue...
For a demo K4, he should just use MfgTool to boot to diags. Then use diags SSH and dd to flash main kernel and partition.