Amazon Tethered BL Unlock

Simple Python(3) script to disable LK verification in Amazon Preloader images and boot/recovery image verification in Amazon LK ("Little Kernel") images.

Requirements

• Python 3 (with json5 - pip3 install -r requirement.txt).
• Preloader &/or LK from an amazon device.

Notice

• Use this tool at your own risk. I am not responsible for bricked devices. Please BACKUP your PL/LK before using this tool.
• Please do not redistribute images that have been modified with this tool as after all, all images are property of MediaTek Inc and Amazon.
• When reporting an issue, provide a detailed report (Android Version, device, and attach both images).

Usage

patcher.py pl  

patcher.py lk  
 

Usage example

# PL
[email protected] $ python3 patcher.py pl preloader_cupcake.bin preloader_patched.bin
[?] Product name: cupcake.
[?] Using default on/off bits.
[?] Using default bit position.
[?] LK verification: True (0x11e8) (b'\xff').
[*] Disabling LK verification...
[+] Successfully patched PL and saved it as preloader_patched.bin!
[email protected] $

# LK
[email protected] $ python3 patcher.py lk lk_sheldon.bin lk_patched.bin sheldon
[?] Product name: sheldon.
[?] (1/2) Using default on/off bits.
[?] Image verification: True (0x1198) (b'\x00').
[*] Disabling image verification...
[?] (2/2) Using default on/off bits.
[?] Fastboot verification: True (0xdd38) (b'\x01').
[*] Disabling fastboot verification...
[+] Successfully patched LK and saved it as lk_patched.bin!
[email protected] $

Supported devices

License

• This tool is licensed under the GNU (v3) General Public License. See LICENSE for more details.