Thread: Is it possible to downgrade a kindle changing the .bin header?
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Old 10-15-2020, 02:01 PM   #3
j.p.s
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Quote:
Originally Posted by DisableGraphics View Post
I have a KT3 with firmware 5.9.2.0.1. I would like to downgrade to version 5.8.0. But, whenever I copy the firmware, it gets deleted. I downloaded (just to try) the 5.13.3 version and examined it with a Hex editor. The first 4 characters are SP01, but in the 5.8.0 version, those are FB02.

Here is the question: can I downgrade changing the FB02 header into SP01?
Kindle firmware updates are cryptographically signed, so no.
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