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Old 08-12-2016, 05:07 PM   #1
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Is it possible to modify kindle update package to include jailbreak

Recently I've found time to play with my kindle. I begin with extracting the initial updates. Then I mounted rootfs.img and begun "looking what is where". I tried to create a custom directory, and then umounted it. The file stayed there. So my question is whether it is possible to modify amazon update package so it includes modified rootfs with jailbreak already there.
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Old 08-12-2016, 05:23 PM   #2
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Of course you can. But how do you plan on signing it with Amazon's signing key?

The whole point of the jailbreak is to get our thirdparty signing key on there, to enable future thirdparty updates packed with KindleTool.

...

I suppose you could repack the official updates in order to allow easy firmware updates on jailbroken devices... but that problem was already solved via the jailbreak "bridge".
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Old 08-12-2016, 05:42 PM   #3
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Quote:
Originally Posted by Galunid View Post
... So my question is whether it is possible to modify amazon update package so it includes modified rootfs with jailbreak already there.
It would be possible to package an entire "distro" with the jailbreak, and we could have various flavors of distros (much like linux distros) with an assortment of pre-configured hacks. This is essentially the opposite of what you propose, but effectively the same from an end-user point of view. For most devices that would consist of two steps -- downgrade, then "jailbreak distro install". However, such distros would require regular maintenance and support by the individual distro maintainers (if any). It is much less work to support individual modular hacks packaged as we do now.

Last edited by geekmaster; 08-12-2016 at 05:45 PM.
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Old 08-12-2016, 05:52 PM   #4
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Quote:
Originally Posted by eschwartz View Post
Of course you can. But how do you plan on signing it with Amazon's signing key?

The whole point of the jailbreak is to get our thirdparty signing key on there, to enable future thirdparty updates packed with KindleTool.

...

I suppose you could repack the official updates in order to allow easy firmware updates on jailbroken devices... but that problem was already solved via the jailbreak "bridge".
Yes, my bad. I missed the whole point

Quote:
Originally Posted by geekmaster View Post
It would be possible to package an entire "distro" with the jailbreak, and we could have various flavors of distros (much like linux distros) with an assortment of pre-configured hacks. This is essentially the opposite of what you propose, but effectively the same from an end-user point of view. For most devices that would consist of two steps -- downgrade, then "jailbreak distro install". However, such distros would require regular maintenance and support by the individual distro maintainers (if any). It is much less work to support individual modular hacks packaged as we do now.
Still. Wouldn't be it a good idea, to create update package for example to fw 5.6.5 with most basic packages(rescue pack, coward rescue pack, usbnetwork)?
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Old 08-12-2016, 06:11 PM   #5
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Originally Posted by Galunid View Post
- - - -
Still. Wouldn't be it a good idea, to create update package for example to fw 5.6.5 with most basic packages(rescue pack, coward rescue pack, usbnetwork)?
No it would not.

What one person considers 'basic' may not match what the next person considers 'basic'.

So if you have 12 possibly 'basic' add-ins, then you end up with 2^12 different combinations to maintain.

The way it stands now, each person puts everything they want into /mrpackages and run MrPI one time to install everything.
Perhaps you missed the point that MrPI is a "Batch" installer.

Not significantly different than running one 'master update' installer package.
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Old 08-12-2016, 06:17 PM   #6
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Quote:
Originally Posted by Galunid View Post
Yes, my bad. I missed the whole point



Still. Wouldn't be it a good idea, to create update package for example to fw 5.6.5 with most basic packages(rescue pack, coward rescue pack, usbnetwork)?
A package would have to be created for each Kindle device. What about the ones that can't accept 5.6.5? Now we have multiple firmware packages for different devices, and different versions, and if we're doing 5.7.4 (or whatever version number is "best") for the KT3 and KOA, why not do it for the Voyage and the PW3, too?

What happens if a person's Kindle updates to a new version? Is there going to be some sort of update blocker built in to the custom firmware as well?

These are just the questions off the top of my head...

Shari
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Old 08-12-2016, 06:26 PM   #7
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