SP Flash Tool will then flash the unlock file to your device. This process may take a few minutes, and your device may reboot several times.
Ensure your MediaTek device has at least 50% to 60% battery life to prevent a sudden shutdown during the flash.
On many MediaTek devices, flashing the modified file prepares the device for the final unlock command:
Flashing the wrong preloader or partition files can permanently brick your device. Always back up your data and ensure you have the exact firmware files for your device model. Prerequisites and Downloads
To unlock the bootloader via SP Flash Tool, you must target the devinfo or custom unlock partitions depending on your device architecture. sp flash tool unlock bootloader
SP Flash Tool, also known as SmartPhone Flash Tool, is a popular software used to flash, unlock, and repair Android devices. Developed by MediaTek, SP Flash Tool is widely used by Android enthusiasts, developers, and device manufacturers to:
By following this guide and exercising caution, you can unlock your bootloader using SP Flash Tool and gain more control over your smartphone.
It cannot bypass a locked bootloader's security check for unsigned images. If you try to flash a modified recovery or boot image while locked, you will likely encounter errors like 0xc002002A or a boot loop.
Any form of bootloader modification or flashing will likely wipe your device. SP Flash Tool will then flash the unlock file to your device
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Unlocking a bootloader on MediaTek devices often feels like a "Catch-22": you need to flash a custom image to unlock it, but the bootloader won't let you flash because it’s locked. Here is the modern workflow to bypass these restrictions.
In the field, load the default MTK_AllInOne_DA.bin located inside the SP Flash Tool folder.
By utilizing specific files—mainly a and an Authentication (Auth) Bypass tool —SP Flash Tool can write modified images (such as an unlocked lk.img or boot.img ) directly into the device's partitions, effectively modifying or resetting the bootloader security flags. Critical Prerequisites Before Flashing On many MediaTek devices, flashing the modified file
In the field, select the default MTK_AllInOne_DA.bin file found in the SP Flash Tool directory (or a device-specific DA file if required).
Select .
Windows lost communication with the device. Re-install the VCOM drivers, try a different USB port (preferably USB 2.0), or use a different USB cable.
A bootloader is a small program that runs on the device before the operating system loads. Its primary function is to load the OS and initialize the hardware components of the phone. The bootloader is usually stored in a dedicated partition on the device's internal storage. On Android devices, the bootloader is typically locked by the manufacturer to prevent users from modifying the device's software.