Unlocking and locking the bootloader
1. First of all,
is necessarynecessarilyallow bootloader unlock on your device.
To do this, activate the menu "
For developers ": Go to"
Settings " -> "
About phone " ->
7 times click on the item "Build Number" .
In the appeared tab "
For developers "in the main settings menu, activate the item:"
Factory Unlock " - "
(Enable OEM Unlock) ".
2. Download from the header
Necessary software for firmware ".
3. Unzip the folder "
Tools "from the archive to the root of the disk"
WITH: ". You get the way:"
C: \\ Tools ".
4. Load the device into
bootloader mode (Bootloader / Fastboot) one of the following ways:
From the off device : Press and hold simultaneously
power button + volume up key .
From the included device :
With USB debug activated follow up
Adb team :
Also in the settings for developers, you can activate the advanced menu items to reboot the device, in particular - bootloader mode (Bootloader / Fastboot).
5. Connect the device to the PC and
install drivers (if you did not do it earlier or they were not installed automatically).
6. Go to the, previously unpacked, folder "
Tools ". In it, in the address bar of the folder above, write -"
cmd "(without quotes).
7. Check device availability and driver installation. Run the fastboot command:
If everything is good, the drivers are successfully installed and the phone is properly connected - you will see the following answer:
<device serial number>fastboot
8. At the command prompt, run
one of The following commands to unlock the bootloader:
Attention:When unlocking the bootloader, all data will be deleted !!! To unlock the bootloader with the ability to flash all partitions except "critical" (partitions of the bootloader itself):
fastboot oem unlock
or
fastboot flashing unlock
To unlock the bootloader with the ability to flash all partitions, including "critical" (partitions of the bootloader itself):
fastboot flashing unlock_critical
9. In the appeared request on the device, you will agree with the unlocking of the bootloader by selecting the "
Yes ". Confirm by pressing the power button.
P.S. To lock the bootloader, execute one of the following commands:
Attention:Make sure that you have a fully installed stock system without a single modification !!! Attention:When locking the bootloader, all data will be deleted !!! fastboot oem lock
or
fastboot flashing lock
Post has been editedDisplax - 04.07.18, 21:33