: Once in Fastboot, run termux-fastboot flashing unlock (or fastboot oem unlock for older models). Special Case: Xiaomi Devices

For many Android enthusiasts, unlocking a phone's bootloader is the gateway to a world of customization, from installing custom ROMs and rooting to gaining full system-level control over their device. Traditionally, this process has been synonymous with using a Windows PC, but thanks to the powerful Termux terminal emulator, you can now unlock your bootloader directly from another Android device or even from the target device itself if it is already rooted.

With Termux and the termux-adb tool installed, you can use your phone as a portable toolkit for various other tasks.

: Different brands have unique requirements. For instance, Xiaomi devices often require a Mi Account and a waiting period. Preparation Checklist

Unlocking a bootloader requires and a PC connection (USB) because:

Termux is a terminal emulator for Android that provides a Linux environment without rooting your device. The claim of unlocking a bootloader solely through Termux is in most cases.

Requires running fastboot oem get_unlock_data to fetch a string string, which you must submit to their developer website to get an unlock key file. You can then flash that key via Termux using fastboot oem unlock UNIQUE_KEY . Security Implications

October 26, 2023 Subject: Feasibility and Methodology of Unlocking Android Bootloaders via Local Terminal Emulation Target Audience: Security Researchers, Android Developers, Advanced Users

Do you have on the host phone you intend to use as the terminal?