5.6.5 Jailbreak (closed-kindle) -- released!

[hfpop]

Thank you. So I asume it is as safe to install as 5.7.2. I mean, the 5.6.5 JB is preserved. Right?

[NiLuJe]

@knc1: Out of curiosity (and in case it comes back to bite me on the ass w/ the Fonts hack ;p), what was wrong with Helvetica in 5.7.2?

[Yolina]

Originally Posted by NiLuJe

what was wrong with Helvetica in 5.7.2?

For some unfathomable reason, they decided to put it on a diet - ended up way too thin!

[NiLuJe]

@Yolina: Ah, okay, thanks .

Who would inflict Helvetica on their eyeballs to read a book to begin with, anyways... .

[Yolina]

Well actually out of the provided fonts, Helvetica is the one I like best (or dislike the least). Though obviously now back to using your handy fonts hack

[el_topo50]

Originally Posted by hfpop

Thank you. So I asume it is as safe to install as 5.7.2. I mean, the 5.6.5 JB is preserved. Right?

it was ok for me! JB survived!

[knc1]

Originally Posted by Yolina

Well actually out of the provided fonts, Helvetica is the one I like best (or dislike the least). Though obviously now back to using your handy fonts hack

Then **DO NOT** install 5.7.2.1 - it "fixes" the Helvetica font of 5.7.2

[Yolina]

No, I like the good old, fat Helevtica but moot point now with the JB and goodies back on the PW3.

And I take it you meant 5.7.2.1, not 5.6.7.1?

[knc1]

Originally Posted by Yolina

No, I like the good old, fat Helevtica but moot point now with the JB and goodies back on the PW3.

And I take it you meant 5.7.2.1, not 5.6.7.1?

Yes - fixed - thanks

[joblack]

I'm wondering if the Update blocker still works. I haven't found anything new in the forum.

[knc1]

Originally Posted by joblack

I'm wondering if the Update blocker still works. I haven't found anything new in the forum.

See the recent posts in the Backdoor Lock thread.
And
other recent posts about alternatives

[jvalant]

Better late than never: Thanks Branch Delay, Niluje and co!!

[Axanar]

Originally Posted by pdurrant

Since the bug that allowed the jailbreak to work on 5.6.5 was fixed in 5.7.2, this particular jailbreak can't be updated to work with it.

Out of curiosity. Isn't the KindleOS based upon Linux, using some sort of own filesystem (maybe compareable to the one that initramfs is using?). Isn't there a way to unpack the *.bin file by any means, hack around some settings inside there and repack to a new *.bin so it can be used to update the Kindle?

I am just speculating here since I never cared for Jailbreaking my Kindle. The recent *lighter font* messup released by Amazon caught me with the idea of Jailbreaking the Kindle as soon as a new JB is available. Only to avoid future *surprises* by Amazon.

[knc1]

Originally Posted by Axanar

Out of curiosity. Isn't the KindleOS based upon Linux, using some sort of own filesystem (maybe compareable to the one that initramfs is using?). Isn't there a way to unpack the *.bin file by any means, hack around some settings inside there and repack to a new *.bin so it can be used to update the Kindle?

I am just speculating here since I never cared for Jailbreaking my Kindle. The recent *lighter font* messup released by Amazon caught me with the idea of Jailbreaking the Kindle as soon as a new JB is available. Only to avoid future *surprises* by Amazon.

Short answer: No

Longer answer:
The update_*.bin packages are cryptographiclly signed.
The firmware's installer tests the signature with the signature certificates in the Kindle's key store.

Our (mis-named) "Jail break" adds the MR developer's certificate to the Kindle's key store.

The tool to take apart (and put back together) the update_*.bin packages is named: KindleTool
The most recent version is always to be found in NiLuJe's snapshots thread top post.

[jarhead]

My PW3 (5.6.5 G090 G105) arrived tonight from Amazon - within an hour I had it jailbroken thanks to easy-to-follow instructions posted in another thread. Tomorrow I will attempt to install KUAL and MrPI, but first have to decide if I want to update to 5.7.2.