unisoc-unlock

This is a tool to lock/unlock a Unisoc / Spreadtrum (SPD) Android bootloader using its Identifier Token.

It is a port of a WebUSB based tool ([0], original [1]) to Python. The WebUSB based tool does not work on Linux for some reason. There is also a custom fastboot binary in circulation [2] which implements a custom command for unlocking the bootloader. unisoc-unlock implements the same functionality, but without resorting to a custom fastboot binary. Since it is a pure Python solution it should be able to run on any platform running Python.

python-adb

unisoc-unlock is implemented with python-adb [3]. Since python-adb is abandoned and requires some tweaking to work with the Unisoc, it is not referenced as dependency, but bundled instead.

Installation

Install with pip:

pip3 install unisoc-unlock

Usage

usage: unisoc_unlock [-h] [--version] [command]

Lock/Unlock tool for Spreadtrum/Unisoc bootloader

positional arguments:
  command     Command (lock|unlock), default=unlock

options:
  -h, --help  show this help message and exit
  --version   show program's version number and exit

Reboot device into fastboot mode

adb reboot bootloader

Wait for 'fastboot mode' to show up on the device screen
Run the python script

python3 -m unisoc_unlock unlock  # To unlock the bootloader
python3 -m unisoc_unlock lock    # To re-lock the bootloader

Confirm unlocking on the device

Note: on the RG405M, the text on the device screen will ask for 'volume down' button to confirm unlock, but the home/back button has to be pressed instead!