On your Host Device (the one running Termux), you need to install the necessary tools. Termux does not come with ADB and Fastboot pre-installed.
pkg update && pkg upgrade -y
pkg install android-tools -y
adb version
fastboot --version
Unlocking the bootloader is the first step toward true Android customization, allowing you to install custom recoveries like TWRP, flash custom ROMs, or root your device with Magisk. While most guides recommend using a PC, you can actually complete the entire process using just another Android device running Termux.
Here is a step-by-step guide on how to unlock a bootloader using Termux. unlock bootloader using termux
After reboot, go back to bootloader mode and check:
fastboot getvar unlocked
If it returns unlocked: yes, you’ve succeeded. Unlocking Your Android Bootloader Using Termux: A Complete
While most bootloader unlocking processes are handled via a PC using ADB (Android Debug Bridge) and Fastboot tools, it is entirely possible to execute the necessary commands directly from an Android device using the Termux application. This is particularly useful when a computer is not available.
This guide will walk you through setting up the environment, enabling the necessary permissions, and executing the unlock sequence. Open Termux
Yes, with fastboot flashing lock (but that wipes data again).