Tools Snapshots of NiLuJe's hacks

[SpartanHeavy]

Originally Posted by Malc

Not sure if its progress, but this time round when launching KUAL I got the following message

"An error occurred: Main Class instantiation threw a RuntimeException. Please contact the developer"

Guys any help would be welcome... I'm losing the will to live at this rate !!

That error happens when you install the booklet version of KUAL. It won't work on Kindle 4.

You can fix it by running the uninstall.bin file from the KUAL archive.

All you need to install KUAL on K4 is to copy the KUAL-KDK-1.0.azw2 file to your documents folder. The .bin installer shouldn't be used.

[Malc]

Originally Posted by SpartanHeavy

That error happens when you install the booklet version of KUAL. It won't work on Kindle 4.

You can fix it by running the uninstall.bin file from the KUAL archive.

All you need to install KUAL on K4 is to copy the KUAL-KDK-1.0.azw2 file to your documents folder. The .bin installer shouldn't be used.

OMG.... was that all it was... So all the guides such as https://kindlemodding.org/jailbreaki...g-started.html that state using the bin file are essentially wrong then...

I can confirm that my kindle is now jailbroken and KUAL opens... Now on to adding Koreader... fingers crossed that goes smoothly

Thanks for your assistance...

[shamanNS]

@Malc Those guides are pretending that nothing older than PW2 exist And also do a poor job of communicating what models and what old firmware version the WinterBreak jailbreak method was tested and should (or shouldn't) be used.
As a result you get K3 and K4 owners trying to use WinterBreak and install KUAL booklet and MRPI

[Malc]

Originally Posted by shamanNS

@Malc Those guides are pretending that nothing older than PW2 exist And also do a poor job of communicating what models and what old firmware version the WinterBreak jailbreak method was tested and should (or shouldn't) be used.
As a result you get K3 and K4 owners trying to use WinterBreak and install KUAL booklet and MRPI

I must admit it is a minefield, and the recent crop of YouTube videos just add to confusion. After I followed the guidance in Spartan's post its all working. I still get the pop up when selecting the Amazon store after I installed Mesquito... but again, maybe the guide I followed was wrong for the old dinosaur kindle I have.

Time to RTMF on how to add books to the kindle. It never really got used that much given the limitations (need the light on to read it which annoyed the other half). I mainly used it to have 100+ I.T. Procedures in pdf at my fingertips when I was an IT Tech back around 2011...

[Frogm4n]

Originally Posted by shamanNS

@Malc Those guides are pretending that nothing older than PW2 exist And also do a poor job of communicating what models and what old firmware version the WinterBreak jailbreak method was tested and should (or shouldn't) be used.
As a result you get K3 and K4 owners trying to use WinterBreak and install KUAL booklet and MRPI

TBF, they do have a table of models and recommended jailbreaks, but it is not expanded by default and people are likely to just skim past that button.

[Frogm4n]

Originally Posted by Malc

Time to RTMF on how to add books to the kindle.

If you will be reading with KOReader be sure to configure Calibre to send EPUB to your Kindle, since by default it will autoconvert to Amazon formats on Kindles.

[OstrichEgg]

USBNetwork isn't installing on my just-jailbroken PW6. I put Update_usbnet_0.22.N_install_pw2_and_up.bin in mrpackages, disconnected USB, and selected "Install MR Packages" in KUAL. A big package icon flashes on the screen for a fraction of a second and then the screen goes white for 15-20 seconds. Something is happening, obviously, but it doesn't install. No USBNetwork in KUAL, no extensions/usbnet folder, ;un doesn't do anything. I'd appreciate any thoughts.

[shamanNS]

@OstrichEgg Expected result since your using an installer bin that:

1) doesn't target your device so MRPI will refuse to install it. (check the log file located at /extensions/MRInstaller/log(s)/mrinstaller.log to confirmed that's the case)

2) hasn't been updated / recompiled to for 'armhf' so won't work on firmware 5.16.3 or newer

Your device and firmware combo needs to use "USBNetLite" (that's USBNetwork hack but compiled for armhf instead of armel/armebi).

https://github.com/notmarek/kindle-usbnetlite/releases

And maybe / probably the usbnetlite installer also doesn't target your device like it was already confirmed that it doesn't install on some Kindle ColorSoft devices.

[OstrichEgg]

It worked. Thanks!

[Crucial]

Hello all, I use my kindle as a web display through alpine Linux, I recently restarted my kindle and I am left with the same error as most when opening KUAL that, "The permissions to open this item have expired." Please can somebody help guide me into fixing this? I am not great at these things and would really not like to jailbreak the whole device again. I have a kindle PW2 on version 5.12.2.2. Thank you.

[mlss]

Hi, I'm unable to open KUAL with my PW1 with 5.6.1.1 firmware, started with the "The permissions to open this item have expired. Please contact the developer." issue, then I:

- Downloaded the new KUAL-v2.7.37-gfcb45b5-20250419 and replaced the KUAL-KDK-2.0.azw2 with the new one;
- Downloaded the DevCerts-20250419-KeyStore.zip, and copied the Update_mkk-20250419-k5-ALL_keystore-install.bin to the kindle's root, but it does not show any new update at the "Update Your Kindle" menu (gray text button);
- Restarted the kindle and the file was removed, but when I tried to open KUAL, it showed the "This item is not signed by an authorised developer. Please contact the developer”
- Tried the file again in the root and in the mrpackages folder now searching for ;log mrpi but the problem persists and the file remains in the kindle.


I'm aware of the chaitanyaI solution, but I'm already with the 5.6.1.1 firmware, so I don't know what is the best thing to do to fix KUAL .

[bittrulz]

Just an idea - no clue if it works, but you could try: downgrade to 5.4.4 (just download the package from Amazon and hit update from Kindle's own software, it should work - I did it myself a while ago). After that redo all the steps you already did and only after that update again to 5.6.1

[sopyk]

It works for my KPW1! Thanks chaitanya!

Originally Posted by chaitanyaI

Hi all,
for all who have issue that "The title is not signed by a registered developer"
I found a temporary solution until developers pitch in to correct the issue.
This is the only solution that worked for me on KPW1 after 3 days and multiple resets. Upgrade to 5.6.1.1 finally after everything worked for me.

I will say what I done, so modify it according to your needs

- Freshly reset the device
- Right now I am in 5.3.3
- Updated it to 5.4.4 (" why, I don't know. I thought it is safe for 5.4.x so why don't update to border ")
- Now jailbreak it as the official snapshot page says.
- Simply put, download "kindle-jailbreak-1.16.N-r19426.tar.xz" > extract kindle-5.4-jailbreak.zip > extract and put all files into root folder of kindle.
- Come to settings > update you will see ***JAIL BREAK***
- Now what I done is, copy the latest .bin for K5 from DevCerts-20250419-KeyStore.zip, placed in root folder
- again, settings > update
- now, install MRPI from this link as instructed. Once you are in 5.6.x.x you cant update any .bin by normal method only MRPI is the way for now.
- now copy latest Kual from official page and extract KUAL-KDK-2.0.azw2 and place in documents folder
- Still you can see when you open KUAL it says error.
- Now magic part, update kindle KPW1 to latest firmware, you know how -> place in root folder then settings > update
Check this screenshot of kindle root folder before updating
- while booting make sure you seen ***BRIDGE+***
- Volla now open KUAL , it worked for me.
- next install extensions like KOREADER or update .bin things using MRPI.

I am happy to write this post, as this should help someone who is struggling to use their old kindles.
This is chaitanya ...

[IJustWantToRead]

Originally Posted by mlss

Hi, I'm unable to open KUAL with my PW1 with 5.6.1.1 firmware, started with the "The permissions to open this item have expired. Please contact the developer." issue, then I:

- Downloaded the new KUAL-v2.7.37-gfcb45b5-20250419 and replaced the KUAL-KDK-2.0.azw2 with the new one;
- Downloaded the DevCerts-20250419-KeyStore.zip, and copied the Update_mkk-20250419-k5-ALL_keystore-install.bin to the kindle's root, but it does not show any new update at the "Update Your Kindle" menu (gray text button);
- Restarted the kindle and the file was removed, but when I tried to open KUAL, it showed the "This item is not signed by an authorised developer. Please contact the developer”
- Tried the file again in the root and in the mrpackages folder now searching for ;log mrpi but the problem persists and the file remains in the kindle.


I'm aware of the chaitanyaI solution, but I'm already with the 5.6.1.1 firmware, so I don't know what is the best thing to do to fix KUAL .

Hey mlss,

Downgrading to 5.4.4 first, then following chaitanyal's method should work. I bit the bullet after possumbly_human verified they had no issues with chaitanyal's method and everything seems to be working fine on my PW1.

How to downgrade: https://www.mobileread.com/forums/sh...d.php?t=264432

Firmware link: https://s3.amazonaws.com/G7G_Firmwar...ndle_5.4.4.bin

Thanks to NiLuJE, all the other developers, chaitanyal, and possumbly_human! You're all amazing.

[Tuankutin]

Hello everyone, I just received a Kindle Touch (K5) as a gift, and I’m really eager to explore it by jailbreaking (JB) and installing KOReader like this


However, I’m facing a small issue with KUAL.
My device is in 5.3.7.3 Firmware

I downloaded the K5 JailBreak (5.0.x - 5.4.4.2) | kindle-jailbreak-1.16.N-r19426.tar.xz and successfully jailbroken my device as instructed.

I copied the file KUAL-KDK-2.0.azw2 into the Documents folder.

When I opened KUAL on my device, I got the error message: ‘This item is not signed by an authorized developer.’

Can anyone help me with this?