Tools Snapshots of NiLuJe's hacks

[SpartanHeavy]

Originally Posted by famewolf

WHat exactly am I supposed to do with this? I have a Kindle PW1 which I downgraded to 5.3.3 and installed the jailbreak. Nothing I've tried including installing the mkk and the 2025 updated devcerts package someone provided has allowed KUAL to get past the "not signed by an authorized developer". I have no idea how to update the firmware. The only things I've seen so far is someone installing and using an older KUAL version with there system date on the kindle set back or some folks updated back to 5.6.1 and the jailbreak is supposed to survive?

Can someone tell me what I should do clearly and if it's upgrade back to 5.6.1 do I need to download it manually or just take the device out of airplane mode?

You need to update the firmware to 5.6.1.1. The jailbreak will survive the update. Instructions for updating are here:

https://www.amazon.com/gp/help/custo...AE5G5UGCYA25DW

After it's updated, follow the instructions on the Kindle Modding Wiki beginning with installing the universal hotfix:

https://kindlemodding.org/jailbreaki...g-up-a-hotfix/

[famewolf]

Originally Posted by SpartanHeavy

You need to update the firmware to 5.6.1.1. The jailbreak will survive the update. Instructions for updating are here:

https://www.amazon.com/gp/help/custo...AE5G5UGCYA25DW

After it's updated, follow the instructions on the Kindle Modding Wiki beginning with installing the universal hotfix:

https://kindlemodding.org/jailbreaki...g-up-a-hotfix/

Thank you! I've upgraded, installed KUAL and MRPI then installed the hotfix via MRPI.

Now to look at all the packages!

[koopatrav]

Hi there. I've been trying to jailbreak my Kindle 4 in advance of Amazon ending support later this month, and I'm having some issues with a persistent U007 update error code when I try to do the MKK Update. Here's what I'm working with:

• K4, firmware 4.1.4 (build 3543630001)
• Jailbreak applies successfully (You Are Jailbroken document appears)
• MKK install (Update_mkk-20141129-k4-ALL_install.bin) consistently fails with U007
• DevCerts likewise fails with U007
• developer folder exists in root but contains only a KUAL subfolder, no keystore
• Airplane mode on, OTA block folder removed during attempts
• Tried immediately after fresh jailbreak reapplication

If I could get any help on how to correct the error, I would really appreciate it. Thanks for all the good info in this thread so far!

[dcarvil]

Originally Posted by koopatrav

Hi there. I've been trying to jailbreak my Kindle 4 in advance of Amazon ending support later this month, and I'm having some issues with a persistent U007 update error code when I try to do the MKK Update. Here's what I'm working with:

• K4, firmware 4.1.4 (build 3543630001)
• Jailbreak applies successfully (You Are Jailbroken document appears)
• MKK install (Update_mkk-20141129-k4-ALL_install.bin) consistently fails with U007
• DevCerts likewise fails with U007
• developer folder exists in root but contains only a KUAL subfolder, no keystore
• Airplane mode on, OTA block folder removed during attempts
• Tried immediately after fresh jailbreak reapplication

If I could get any help on how to correct the error, I would really appreciate it. Thanks for all the good info in this thread so far!

See this thread:

https://www.mobileread.com/forums/sh...d.php?t=373062

[Maru]

Help with KUAL: I have never done anything like this. I have tried following the step by step on the kindlemodding page, I got the jailbreak part down but I cannot get passed the "application is not signed by a registered developer" error message on the kindle. I have a very old one from 2009. HELP the layman

[famewolf]

Originally Posted by Maru

Help with KUAL: I have never done anything like this. I have tried following the step by step on the kindlemodding page, I got the jailbreak part down but I cannot get passed the "application is not signed by a registered developer" error message on the kindle. I have a very old one from 2009. HELP the layman

You need to install the MKK package which updates the signatures so the package is authorized. See the first post.

[koopatrav]

Originally Posted by dcarvil

See this thread:

https://www.mobileread.com/forums/sh...d.php?t=373062

Thank you, that helped!

[aerynsun]

Alright, I think I am losing my mind. I must be missing something really obvious and I am tearing my hair out.

So, I have a PW1 (B024 serial), downgraded the firmware to 5.4.4 and installed the jailbreak according to intructions on threads around here. It seems to already have the MKK hotfix. No issues there.

Now I want to install MRPI and KUAL and... nothing is happening? How do I start these? Did I copy the stuff to the wrong folder or something? How do I get KUAL to actually install?


This is what my kindle looks like right now:


What am I doing wrong?

I would like to actually get KO reader to work because the downgrade nuked all my collections and seems to think all of my books were added today and that's annoying AF.

[shamanNS]

Originally Posted by aerynsun

No issues there.

The issues is precisely there: you not understanding what's the reason your installing various things and what the KUAL not opening boils down to.

So let's try and spell it out: any jailbreak and any jailbreak hotfix that was released before April 2025 contains / "bundles" MKK ( = developer certificate keystore + some other stuff) with certificates that expired in the middle of April 2025.

So the things you have in that MKK folded you see (and another location that you don't see over USB cable) that was put there by installing that ancient jailbreak installer has been useless for more than a year now.

Since nobody cared enough to update that jailbreak archive nor old hotfix in NiLuJe's snapshots thread after jailbreaking and installing hotfix you're still in broken / not working state, so you need to install another thing to replace the expired certificate with a valid one.

This: https://www.mobileread.com/forums/sh...postcount=1295
("K5 ALL" is the one you use for PW1)

And you also need to download and install the latest version of KUAL that's been signed to use that new certificate instead of the old, expired one. You get that from the first post in this thread. Don't use azw2 file / "kindlet" KUAL on a PW1, install the "booklet" KUAL ( = installer.bin). Remove the old KUAL azw2 file from the "documents" folder first.

And one more thing: you didn't "install" MRPI correctly since your screenshot shows "kual-mrinstaller-1.7..." folder that's not supposed to be copied to your Kindle : only the content inside THAT folder goes inside "extensions" folder ( = so you end up with "E:\extensions\MR Installer\" IIRC the actual name MRPI extension uses) on your Kindle.

And also you will need to update back to 5.6.1.1 after you jailbreak AND install the latest jailbreak hotfix (needed so your jailbreak survives firmware update) + restart 2 more times. Then after firmware update AGAIN do hotfix installing + install DevCerts bin + install KUAL bin.