KUAL: Kindle Unified Application Launcher (v2.7)

[PreciousRoi]

Ever figure this out?

Having the same issue on an Oasis (10th) running 5.17.1.0.3, 4.12GB space available.

I put the KUAL installer file in the mrpackages folder and it reboots, but no KUAL booklet.

[PreciousRoi]

Originally Posted by rbk

Hi everyone, I hope this is the right place to ask:

I've followed the main guides to install Winterbreak and the Hotfix on my Paperwhite 6th Edition; then did try to install KUAL several times now on my both via hotfix as well as via MRPI.

Both seems to work fine up to a point; especially with MRPI, I get all the icons after executing `;log mrpi`; it does notably more than running it without copying the KUAL_..._install.bin to `/mrpackages` beforehand.

It shows messages regarding the KUALbooklet.sh and even even flashes the SUCCESS message on me before restarting the UI!

However, there is NO KUAL booklet available on my device. I tried searching, I tried recents, I tried local (i.e. downloaded) library files only, I tried all library files, I looked through each page; NOTHING. I also tried the install in both airplane mode and connected; there doesn't seem to be a difference.

The only thing that changes is that my `/mrpackages` is empty directly after.

My Kindle drive shows the winterbreak.log, the hotfix book is still available; for what it's worth it looks like I didn't mess up the previous steps.

The device also has 570MB free space left; which should hopefully be fine?

I've also tried running the KUAL Uninstaller and installing again; which also gives me a SUCCESS message -- with pretty much the same result though.

If anyone can point me to anything I could have messed up or double-check, I'd be awfully glad.

So I managed to "fix" the same issue on an Oasis 3.

I downloaded a different version of KUAL. The one I was using and wasn't working was "Update_KUALBooklet_HDRepack.bin" and the one that did work was "Update_KUALBooklet_c6ac782_install.bin".

Hope this helps!

[TEN]

Originally Posted by rbk

after executing `;log mrpi`; it does notably more than running it without copying the KUAL_..._install.bin to `/mrpackages` beforehand.

It shows messages regarding the KUALbooklet.sh and even even flashes the SUCCESS message on me before restarting the UI!

However, there is NO KUAL booklet available on my device...

The device also has 570MB free space left; which should hopefully be fine?

So I also thought, then boldly I cleared over a gig for good measure (the Kindle being kept off the Internet at that stage anyway) and it finally worked: https://www.mobileread.com/forums/sh...&postcount=801
Clearly https://kindlemodding.org/jailbreaki...ing-kual-mrpi/ makes "quite some" understatement: "If you are using the “fill storage” method to block updates, make sure to free up some space before proceeding with these steps."

[zilbook]

Recently I got the KUAL certification expired problem on my Kindle PW2 6th gen (fw 5.12.2.2).

I downloaded the updates linked here https://www.mobileread.com/forums/sh...25#post4506225 and put them in the proper paths (kual v2 in the /document path, the updater in the main path and the new cert in /var/local/java/keystore/) but once unmounted the kindle nothing happened, no trigger to install the update.

Can anyone please write the steps you should follow to complete the update? Maybe I'm forgetting something.

Thanks in advance

[Diavolesku]

I spent half a day struggling with this, finally gave up and hoping someone can help. I have a Kindle Touch (B011 1408) running on 5.3.7.3 software. I've used the 1.16.N jailbreak for K5 successfully (got the message). Then went ahead and installed KUAL - the line in the library appeared immediately, however upon clicking I got the error message "This device is not authorized as test Kindle...". After a short search in the forum, I found an article recommending that the hotfix is installed, which I did, on top of it I pasted the KUAL Booklet v2.7.37 install, added the MRPI and ran the ;log mrpi (device restarted successfully).

However, the only difference is that now when touching KUAL I get "This item is not signed by an authorized developer. Please contact the developer". I can confirm that in the two hours since I've did the jailbreak I have not changed the username or updated the firmware (WIFI has been off the whole time).

I am after installing a single .bin file, a bulgarian translation so my mother can use the menu - https://github.com/kaloyan-raev/kindle-nt-l10n-bg/
According to it's developer it can be placed in the root folder of a JB device and will install via Update buton, however it gets deleted every time after I eject the Kindle. It doesn't get deleted from the mrpackages folder, but when running the ;log mrpi it does not install the language pack (all the screens run and device restarts successfully, but the update is not applied).

Any thoughts?

[Frogm4n]

Originally Posted by Diavolesku

I am after installing a single .bin file, a bulgarian translation so my mother can use the menu - https://github.com/kaloyan-raev/kindle-nt-l10n-bg/

Translating the first part of the README.md:

Localization in Bulgarian for Kindle 4 and 5 (without touch screen)

You are trying to install it on a Kindle Touch. They run different firmware.

[zilbook]

Issue solved, I forgot to put the bin file into the main path.

[vendo232]

Team

I can`t make it work on Kindle DX, getting The title is noty signed by registered developer

I have installed this MKK update 2x already

Update-mkk-20250419-dx-B004_keystore-install.bin

I`m probably on a wrong date since I have to run the setdate update everytime I loose power to the device. Would wrong date be an issue?

Would you know where I can find older KUAL versions to try go back?

( it does work on K3G )

[SpartanHeavy]

Originally Posted by vendo232

Team

I can`t make it work on Kindle DX, getting The title is noty signed by registered developer

I have installed this MKK update 2x already

Update-mkk-20250419-dx-B004_keystore-install.bin

I`m probably on a wrong date since I have to run the setdate update everytime I loose power to the device. Would wrong date be an issue?

Would you know where I can find older KUAL versions to try go back?

( it does work on K3G )

That keystore update and the latest version of KUAL are broken on Kindle DX.

You'll need to use an old version of KUAL and the old MKK from the first post in the snapshots thread. Here's a version of KUAL that should work: https://storage.gra.cloud.ovh.net/v1...0250103.tar.xz

The old MKK keystore expired in April 2025, so make sure to keep your Kindle's clock set to a date before then.

[vendo232]

Originally Posted by SpartanHeavy

That keystore update and the latest version of KUAL are broken on Kindle DX.

You'll need to use an old version of KUAL and the old MKK from the first post in the snapshots thread. Here's a version of KUAL that should work: https://storage.gra.cloud.ovh.net/v1...0250103.tar.xz

The old MKK keystore expired in April 2025, so make sure to keep your Kindle's clock set to a date before then.

Nice to see you again SpartanHeavy. Thank you for the advice. Rolling back worked as the setdate bin file is in the past.
Tried to update the new certs in this folder /var/local/java/keystore/developer.keystore but it did not work.

As I have the usbNetwork setup I will try to use ChatGPT to create a bootup script to set the date for Jan 2025 so the old KUAL/MKK works and I don`t have to flash the setdate bin after every soft reset ( battery drain )

[vendo232]

I just used Grok and it did not help to create the script
Then moved to Claude.ai and vuala it gave me a script which actually works.

The kindle DX keeps Jan 1 2025 after REBOOT! Fantastic!

mntroot rw; 

cat > /mnt/us/extensions/set_date/set_date.sh << 'EOF'
#!/bin/sh
# Set date to January 1, 2025 12:00:00
date -s "010112002025"
EOF

chmod +x /mnt/us/extensions/set_date/set_date.sh; 
mkdir -p /mnt/us/launchpad; 
cat > /mnt/us/launchpad/set_date.ini << 'EOF'
[Actions]
B = !sh /mnt/us/extensions/set_date/set_date.sh
EOF

mntroot ro; 
reboot