Hacks Unable to open Kual on K5 (Kindle Touch)

Tuankutin · 05-10-2025, 02:15 PM

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 kindle 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?

SpartanHeavy · 05-10-2025, 05:55 PM

Install the DevCerts update.

https://www.mobileread.com/forums/sh...postcount=1295

JSWolf · 05-11-2025, 06:17 AM

The Kindle Touch is not a K5 as it's a 4th gen device. Also, it was never named K5. It's always been Kindle Touch.

j.p.s · 05-11-2025, 02:06 PM

Quote:

Originally Posted by JSWolf

The Kindle Touch is not a K5 as it's a 4th gen device. Also, it was never named K5.

Yes, it is:
https://wiki.mobileread.com/wiki/Kindle_Serial_Numbers

Tuankutin · 05-12-2025, 01:01 AM

thank you @all guys, i have update the MKK and it works

05-10-2025, 02:15 PM	#1
Tuankutin Member Posts: 19 Karma: 10 Join Date: Oct 2024 Device: Kobo Libra 2	Unable to open Kual on K5 (Kindle Touch) 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 https://www.youtube.com/watch?v=aUCrzCCr63A</a>?wmode=opaque&origin=https://www.mobileread.com" frameborder="0" allowfullscreen> However, I’m facing a small issue with KUAL. My kindle 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?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Cannot open KUAL; The permissions to open this item have expired. Please contact...	whatever4kindle	Kindle Developer's Corner	21	10-26-2025 03:38 PM
Unable to open KUAL - JB Kindle Error	andiwonder	Kindle Developer's Corner	5	05-19-2025 03:04 AM
fix current date on kindle dx? stuck in 1970, KUAL won't open	unrznbl	Kindle Developer's Corner	22	12-18-2024 10:37 PM
Kindle PW - Unable to Open	brewjono	Calibre	1	11-08-2012 07:53 PM
Unable to open books on kobo touch	LuucyyQueen	Kobo Reader	8	07-16-2012 07:53 AM

05-10-2025, 05:55 PM	#2
SpartanHeavy Enthusiast Posts: 49 Karma: 94 Join Date: Aug 2024 Device: K2 / K4 / PW5	Install the DevCerts update. https://www.mobileread.com/forums/sh...postcount=1295

05-11-2025, 06:17 AM	#3
JSWolf Resident Curmudgeon Posts: 80,786 Karma: 150249619 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	The Kindle Touch is not a K5 as it's a 4th gen device. Also, it was never named K5. It's always been Kindle Touch.

05-12-2025, 01:01 AM	#5
Tuankutin Member Posts: 19 Karma: 10 Join Date: Oct 2024 Device: Kobo Libra 2	thank you @all guys, i have update the MKK and it works

Advert

Advert