Confirm the host can still see the target while in this mode: fastboot devices Use code with caution. If a serial number appears, you are ready to proceed. 5. Execute the Unlock Command
Unlock Bootloader via Termux: A Guide to PC-Free Android Customisation
Connect the host and target devices using the OTG cable. Once connected, check if the host recognises the target by typing: adb devices Use code with caution. unlock bootloader via termux
To unlock the bootloader, the target device must be in Fastboot (or Bootloader) mode. Execute this command in Termux: adb reboot bootloader Use code with caution.
You gain the ability to install custom recovery (like TWRP), flash custom kernels, and replace your OS with privacy-focused alternatives. Confirm the host can still see the target
On the device, you will likely see a confirmation screen. Use the volume keys to select "Unlock" and the power button to confirm. The device will then wipe all data and reboot with an unlocked bootloader. Manufacturer-Specific Notes
A second Android phone with Termux installed from F-Droid. An OTG Adapter: To connect the two phones via a USB cable. Execute the Unlock Command Unlock Bootloader via Termux:
Before proceeding, it is vital to understand that unlocking a bootloader is a high-level modification.
The process typically wipes all user data (factory reset). It can also void your manufacturer's warranty and may cause certain high-security apps—like banking or Netflix—to stop working due to integrity checks. Prerequisites for the Termux Method To perform this without a PC, you need: The Target Device: The phone you want to unlock.
The exact command varies by manufacturer. For most modern devices (Google Pixel, OnePlus, etc.), use: fastboot flashing unlock Use code with caution. For older devices, the command might be: fastboot oem unlock Use code with caution.