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DanThos · 05-21-2025, 09:17 AM

Hi all, I am new to the forum but successfully jail broke and used Kindle 4's without problems for some years until the certificate expired.

I tried updating the certificate using the utility and by copying developer.keystore to /var/local/java/keystore/developer.keystore.

This didn't solve the problem so I used Kubrick Live CD to jailbreak and reformat a Kindle K4 non-touch to try a new install using the latest snapshot. Enabled airplane mode and used the following to install KUAL, running updates from the Kindle menu

-Update_mkk-20141129-k4-ALL_install.bin from kindle-mkk-20141129-r18833.tar.xz to root and updated from Kindle menu

-Copied mrpackages and extensions to root directory from kual-mrinstaller-1.7.N-r19303.tar.xz to root and KUAL-KDK-1.0.azw2 from KUAL-v2.7.37-gfcb45b5-20250419.tar.xz to documents folder.

-Update_KUALBooklet_hotfix_v2.7.37_install.bin from kindle-jailbreak-1.16.N-r18474.tar.xz

-Update_mkk-20250419-k4-ALL_keystore-install.bin from DevCerts-20250419-KeyStore.zip

Still cannot run KUAL, still get the same error message.

Very grateful for any advice and help, this has really frustrated me!

05-21-2025, 09:17 AM	#1386
DanThos Junior Member Posts: 4 Karma: 10 Join Date: May 2025 Device: Kindle	Certificate problem even on a new, clean install Hi all, I am new to the forum but successfully jail broke and used Kindle 4's without problems for some years until the certificate expired. I tried updating the certificate using the utility and by copying developer.keystore to /var/local/java/keystore/developer.keystore. This didn't solve the problem so I used Kubrick Live CD to jailbreak and reformat a Kindle K4 non-touch to try a new install using the latest snapshot. Enabled airplane mode and used the following to install KUAL, running updates from the Kindle menu -Update_mkk-20141129-k4-ALL_install.bin from kindle-mkk-20141129-r18833.tar.xz to root and updated from Kindle menu -Copied mrpackages and extensions to root directory from kual-mrinstaller-1.7.N-r19303.tar.xz to root and KUAL-KDK-1.0.azw2 from KUAL-v2.7.37-gfcb45b5-20250419.tar.xz to documents folder. -Update_KUALBooklet_hotfix_v2.7.37_install.bin from kindle-jailbreak-1.16.N-r18474.tar.xz -Update_mkk-20250419-k4-ALL_keystore-install.bin from DevCerts-20250419-KeyStore.zip Still cannot run KUAL, still get the same error message. Very grateful for any advice and help, this has really frustrated me!