It is available from anyone who has that device, runs the backup script I have posted, and is willing to share.
(It extracts the kernels (both) and tests the package it creates for each.)
No, I don't have a link to the backup thread, but it is a thread started by myself, search those in the advanced search.
I did find the "recover from erase all" thread.
Start around here:
https://www.mobileread.com/forums/sh...32&postcount=8
You will have to skip a lot of noise posts made by people, but we do eventually get the device repaired.
And check the attachments, there are a lot of examples of what to expect at each step (we spent a lot of time on it).