Sounds easy to explain: PEBKAC
From your post, that is probably a Kindle Paperwhite, Gen(1).
You "found the images" - ah - really ?
I don't think you want Fastboot.
You will need to use the u-boot BIST to get into Fastboot mode.
Which requires a serial port connection.
But once you have that serial port connection, you can fix it without using Fastboot.
If this is indeed a Kpw(1) - - then your goal is to put one of the Amazon complete images on the root of your USB storage area, then do an "update Kindle".
|