1. In the "Settings" menu of the smartphone, activate the "For Developers" menu (as a rule, by repeatedly pressing the build number in the "About phone" tab) and select "Allow factory unlock" in the menu. Turn off the machine.
2. Switch the device to the "fastboot" mode by pressing the volume up and power off from the off state of the key combination by selecting the "fastboot" (bootloader) option from the appeared text menu of the bootloader.
3. Connect the smartphone cable to the USB port of the computer (in the Device Manager, the Android ADB Interface device should appear), (if necessary, install the appropriate ADB device drivers).
copy the necessary utilities to the computer:
Adb.rar(1.44 MB)
, unpack them into a separate folder and open it in the command line (in the explorer, highlight the folder, press and hold shift, right-click on the folder and select "Open command window" in the menu that appears - a black terminal window will appear).
4. At the command prompt, enter the command:
fastboot devices
at the same time, if everything is installed and connected correctly, as a result of the command, you will get the output line of your smartphone like:
fastboot 0123456789ABCDEF
5. Enter the unlock command:
fastboot oem unlock
while on the screen of the smartphone you will be prompted to confirm the intentions by pressing the volume up. Press the volume up.
On the command line, if the command is successful, you will see the following:
C: \ ADB>fastboot oem unlock
...
(bootloader) Start unlock flow
OKAY [43.920s]
finished. total time: 43.921s
IMPORTANT!! Do not miss this item! ->
6. Restart the smartphone with the command
fastboot reboot