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Old 10-22-2009, 08:05 AM   #1
Winston
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Screensaver Hack for International K2?

Hello All,
I just upgraded to a K2 International from the first K2. I loved the screensaver hack on my old Kindle; why this functionality is not provided to begin with is beyond me. The Version 4 hack does not work on the new International K2 (and neither does the modified DX hack). I am hoping one of the brilliant and generous programmers out there will work their magic and perhaps modify the new DX hack for the K2 International? Huge thanks in advance for your kind help in this regard.

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Old 10-22-2009, 11:54 PM   #2
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Hello All,
I just upgraded to a K2 International from the first K2. I loved the screensaver hack on my old Kindle; why this functionality is not provided to begin with is beyond me. The Version 4 hack does not work on the new International K2 (and neither does the modified DX hack). I am hoping one of the brilliant and generous programmers out there will work their magic and perhaps modify the new DX hack for the K2 International? Huge thanks in advance for your kind help in this regard.

Winston
Hi.

I updated the program to create update package for the Kindle 2 international ; but somehow the installationg script fail to run properly..

Not sure why..

Last edited by jyavenard; 10-23-2009 at 12:14 AM.
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Old 10-23-2009, 12:40 AM   #3
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I have the same problem with Unicode Font hack.

It fails in the same way as when I tried to unbrick my US K2 by installing patches from recovery mode. It will recognize the patch, the progress bar would move a little and then the install fails before anything in the script ever executes.

Worst case scenario is that Amazon started digitally signing the updates. In this case it may be impossible to bypass without at least opneing the case and attaching a serial console. I hope it's not true
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Old 10-23-2009, 01:27 AM   #4
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I have the same problem with Unicode Font hack.

It fails in the same way as when I tried to unbrick my US K2 by installing patches from recovery mode. It will recognize the patch, the progress bar would move a little and then the install fails before anything in the script ever executes.

Worst case scenario is that Amazon started digitally signing the updates. In this case it may be impossible to bypass without at least opneing the case and attaching a serial console. I hope it's not true
Mine shipped with firmware 2.2.1 ; seems that some got 2.2.

Hopefully getting our hand on the firmware binary will provide some information with what's different...
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Old 10-23-2009, 06:22 AM   #5
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Thank you both so much for trying!
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Old 10-23-2009, 04:57 PM   #6
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Yep. Mine is 2.2
Yes - having a binary would definitely help. If someone would get a hold on one - please let me know by all means.
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Old 10-24-2009, 06:59 AM   #7
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All right...

Using ;debugOn and ;dumpMessages ; I looked at what was going on:

091024:105149 EXT3 FS on mmcblk0p1, internal journal
091024:105150 system: I _otaupexec:defrocessing update /mnt/us/update_test-k2i.bin
091024:105150 system: I _otaupexec:def:version is "FC02"
091024:105150 system: I _otaupexec:def:update image checksum OK
091024:105150 system: E _otaupexec:def:signature does not exist for "install.sh"
091024:105150 system: E _otaupexec:def:signature verification failed

So either by signature it means the signature found in the .dat file and the calculation has changed ; or packages are actually signed from now on , killing user updated...
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Old 10-24-2009, 10:52 AM   #8
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That seems too...

Maybe, from now on, the only way to patch the kindle is via the seria terminal with adding small wires from its back to get the serial port.... ?

...at least it's not so difficult to do such modification.
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Old 10-24-2009, 02:11 PM   #9
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I'm pretty sure that the same kind of check was done in previous versions of Kindle when installing recovery mode updates. So someone could peek into recovery mode image and take a look at the scripts that process the update.
In the past I was able to dump portions of flash block device to user-accessible partition using hand made updates. Unfortunately my knowledge of linux file systems and disk partitions is not strong enough find that image and get specific files from it.
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Old 10-25-2009, 04:59 PM   #10
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I checked and the software running on my iKindle is 2.2. I'd forgotten how much I dislike looking at pictures of Harriet Beecher Stowe. Why would a company so savvy about so many things, make it so difficult to make a Kindle experience more customized and personal?
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Old 10-30-2009, 03:09 AM   #11
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Hi

All right..

The signature is rather trivial ; it just looks for a .sig file containing a sha256 signature ...

It tests using keys found in /etc/uks ; so it's just a matter of adding our own signature key there and creating the proper .sig file...

Edit: Ok.
I've created an image that installs a new RSA key to the kindle.
I'm just finishing testing of a new packager that will create the signature file automatically..

Will be sharing it soon ...

Jean-Yves

Last edited by jyavenard; 10-30-2009 at 03:34 AM.
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Old 10-30-2009, 03:38 AM   #12
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Hey, jyavenard!

That sounds great, you are the hero...
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Old 10-30-2009, 06:34 AM   #13
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Outstanding! Can't thank Jean-Yves enough and everyone else who has been working on this! This is great news, let's hope it pans out.

Thanks again!
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Old 10-30-2009, 08:22 AM   #14
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Please share soon, will this enable us to get rid of jane austen from the screensaver.
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Old 10-30-2009, 08:43 AM   #15
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Please share soon, will this enable us to get rid of jane austen from the screensaver.
I've posted how already..

http://www.mobileread.com/forums/showthread.php?t=60856

I made the screen saver hack for the Kindle 2 International, but after checking it didn't work.

I had a closer look, and the configuration of the screen saver has changed and the hack (version 0.4) won't work as is ...

Looking into it right now..

Jean-Yves
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