[knc1]

First six characters of serial number:
Firmware version before you started this procedure:

Feature related:
Was this Kindle registered with Amazon? yes, no
Was this an ad supported (Special Offers) Kindle? yes, no
Was a passcode set? yes, no

Special sub-steps:
Did you clear the passcode before the downgrade? yes, no
Did you do the 'Reset (to factory results)' sub-step? yes, no

Internal data related:
Using the Kindle's Cloud Account or local or both? cloud, local, both
Where you using collections? no, or guess at number
Where you using bookmarks? yes, no
Where you using annotations? yes, no
Native language in use:

Kindle Hung:
What is the filename of factory initial update that was used?
Which mirror did you get it from?

Approximately how long did the downgrade process run? (best guess)
What was showing on the screen when it 'hung'?

When the USB cable was connected, Kindle to PC, could you see the storage on the Kindle? yes, no
What sort of response did your PC make when you plugged in the Kindle?
Did using a USB-2 vs a USB-3 port on the PC make a difference? yes, no
Was this same cable and same port working normally before the downgrade? yes, no

Normally, a Kindle is re-booted without any USB cable connected.
Leave the USB cable connected, Kindle-to-PC, re-boot Kindle (hold power button 40 seconds or more, ignore any pop-up panels seen).
What was the result? Same as above or Different (describe please).


What OS and OS version in use on your PC:
USB-2 or USB-3 ports, or both?

Recovery:
If your PC could 'see' the Kindle storage (even briefly) try putting a file named:
DO_FACTORY_RESTORE
(all caps, no extension, no contents)
into the top level of visible USB storage.
Then use the power button to re-boot the Kindle
If that didn't fix it, or the search bar command for the jb does not work -
re-install the factory initial firmware package again (to fix things the flag file function broke).
describe the result here:


Does the 'hung' Kindle boot far enough to show the main screen, can you access the search bar? yes, no