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Old 02-08-2018, 04:00 PM   #12
coplate
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Posts: 645
Karma: 1888888
Join Date: Jun 2009
Device: prs-505, Kindle Keyboard 3g, PW3
Quote:
Originally Posted by bobcat4 View Post
I have an idea how could I downgrade to 5.7.4 Can you please try it if you have PW3 with serial connection?
Quote:
Originally Posted by knc1 View Post
If I have a serial connection I would just put our *.pem file in /etc/uks and be done with it all.

I know that it is possible to downgrade using serial port - once you have the serial port access you pretty much have full access to the file system, the same as the updater software that kindle uses.

But if you are not very careful, and do anything wrong, it is very easy to brick your kindle this way, so it is not something I would recommend to anyone without a good amount of Linux experience.

Because the actual command can vary on different software versions, and different hardware versions, its not easy to put into a script.
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