Kindle Voyage serial port full dump and reflashing

Hi everyone,

First of all I apologize for my English.

:help::blink::bookworm::book2:

I have a Kindle voyage jailbreaked through the serial port, and it worked without problems, a few weeks ago I was traveling, and my Kindle ran out of battery and I enter a cycle of restarts with the screen frozen.

I think that the file system was corrupted slightly, and that it can be recovered with the fsck command, however I have tried to access the serial port, but I only get access to uboot, fastboot, etc. that is, it does not get to load linux or its commands.

I want to know if it is possible to back up the information in any way, make a full memory dump to recover my information.

I found several links to repair kindle paperwhite, but not for Kindle voyage, is it possible to repair my kindle as described in these links?
In other words, are paperwhite images compatible?

https://gist.github.com/TobiasWooldr...ca75190b9a473f

and this video

https://www.youtube.com/watch?v=xBquDhGZXoU

My question is because these files are for the paperwhite version, and my kindle is voyage.

I think this is the last resource, reflashing, but I would like to repair the partition if possible.

for example run linux from ram and repair the partition.

I appreciate your help, comments and suggestions.