MobileRead Forums - View Single Post - Hacks Unable to open Kual on K5 (Kindle Touch)

Tuankutin · 05-10-2025, 01:15 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?

05-10-2025, 01:15 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?