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Old 03-28-2019, 06:20 PM   #3835
JohnSmith6429
Junior Member
JohnSmith6429 began at the beginning.
 
Posts: 2
Karma: 10
Join Date: Mar 2019
Device: Kindle DXI
Hi,

I own a Kindle DXI and started looking into "Kindle Hacks" today. However, there is a few things I am confused about: first, can someone explain to me what the "jailbreak" actually does? It is stated in this thread that
Quote:
The JailBreak opens the door to pretty much everything you'll find on this forum
but I don't understand what exactly requires the device to be jailbroken. For example the wiki and the USBNetwork README_FIRST.txt provide conflicting statements on whether the device needs to be jailbroken.
I've looked into the extracted binary, and saw that it provides a public key. My guess is that this key is used for installing the Kindlets. Is that correct?

Also I've looked into the install.sh for the jailbreak and saw that it tries to extract a file update-patches.tar.gz, which doesn't seem to be present. Is this an issue with the way I "demunged" the binary (I'm kind of reluctant to execute untrusted code, so I wrote a small Python script, doing it the same way KindleTool does for OTAv1 firmware)?

Second I'm interested in the default private RSA key used by KindleTool for signing the packages. Whose key is that and how is it related (if there is any relation at all) to the public key installed by the jailbreak. My guess again is that this is a leaked Amazon key, but that seems kind of unlikely to me. However, if that is not the case I wonder how it is possible to install the jailbreak in the first place.
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