The device will factory reset and the bootloader will be successfully unlocked.
fastboot oem unlock
Samsung devices use a different unlocking mechanism (Download Mode with Odin protocol) that is not compatible with standard Fastboot commands. Termux-based unlocking is not recommended for Samsung Galaxy devices. unlock bootloader using termux
Once the device is recognized in ADB mode, reboot it into the bootloader (fastboot) interface with this command: The device will factory reset and the bootloader
While the instructions above cover universal Android frameworks (like Google Pixel, Motorola, and OnePlus), certain brands require proprietary keys obtained from official developer portals before Termux can execute the unlock. Once the device is recognized in ADB mode,
Unlocking your Android device's bootloader is the first step toward flashing custom ROMs, installing custom recoveries like TWRP, and gaining root access. Traditionally, this process requires a desktop computer, a USB cable, and Android SDK Platform-Tools (ADB and Fastboot). However, if you do not have access to a PC, you can actually turn your Android device into the flashing host.
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