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Old 02-22-2023, 10:08 AM   #1
jhowell
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Possible jailbreak issue with Kindle firmware 5.15.1.1
I took at look at the changes present in the new Kindle firmware version 5.15.1.1 that is in the process of being released.

I found something that may be of concern to those with a jailbroken device, but I do know have enough knowledge of how the jailbreak works to know if it will be an issue or not.

The files pubprodkey01.pem and pubprodkey02.pem have been moved from /etc/uks to a new archive named etc/uks.sqsh.

Perhaps someone with more knowledge of the jailbreak could comment as to whether or not this is a problem.
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Old 02-22-2023, 05:18 PM   #2
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Quote:
Originally Posted by jhowell View Post
I took at look at the changes present in the new Kindle firmware version 5.15.1.1 that is in the process of being released.

I found something that may be of concern to those with a jailbroken device, but I do know have enough knowledge of how the jailbreak works to know if it will be an issue or not.

The files pubprodkey01.pem and pubprodkey02.pem have been moved from /etc/uks to a new archive named etc/uks.sqsh.

Perhaps someone with more knowledge of the jailbreak could comment as to whether or not this is a problem.
Neat, good find

Probably not game changing as there's not really a difference between changing the keyfiles and replacing a squashfs once you've got root access - that said, this will definitely screw with the hotfix as it doesn't support this scenario... yet.
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Old 02-23-2023, 12:07 AM   #3
NiLuJe
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Yup. It's not overly high on my TODO list, and I'm pretty short on time as it is, and previous experience with updating squashfs images on-device wasn't super thrilling...

At least this one should be fairly minimal and universal, so the path of least resistance might just be to ship a patched image directly instead of trying to be cheeky about it...
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Old 02-23-2023, 12:21 AM   #4
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I did on-device tricks with squash fs a long time ago on my PW3 to replace the keyboard files. Do you need my notes? I can dig them up
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