1. Download and install minimal ADB and fastboot in your PC.
https://rootmydevice.com/download-minimal-adb-and-fastboot-all-versions/
2.Make sure you install the adb usb driver of your device.
3. Run Adb and Fastboot as administrator.
4. Boot your phone in fastboot mode.
5. Type "fastboot -w" no quot then hit enter
6. Type "fastboot reboot" no quot hit enter.
7. Done.
Note: Mostly this works to mtk and spd devices but not all devices are supported.
https://rootmydevice.com/download-minimal-adb-and-fastboot-all-versions/
2.Make sure you install the adb usb driver of your device.
3. Run Adb and Fastboot as administrator.
4. Boot your phone in fastboot mode.
5. Type "fastboot -w" no quot then hit enter
6. Type "fastboot reboot" no quot hit enter.
7. Done.
Note: Mostly this works to mtk and spd devices but not all devices are supported.