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Old 08-11-2017, 02:25 PM   #2431
coplate
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Posts: 645
Karma: 1888888
Join Date: Jun 2009
Device: prs-505, Kindle Keyboard 3g, PW3
Quote:
Originally Posted by nicolasmart View Post
Well, does anybody know how does the Kindle check what firmware version do you put on the root of it?

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I mean, how does it decide to delete the update file?

Once you have installed 5.8.8+ on a kindle with an official update, it creates a file on the kindle names like "/update_version.txt"

That file has in it 'FB03'

Once that file is in place, you can no longer install 'FB02' packages, which is what the downgrade packages are all.

The actual installation process is in the linux kernel, with private extensions that amazon does not give the source to.


If you are already on 5.8.10, then no version of FB02 packages will install. you can now only install official amazon packages, or look into the 'serial' method.
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