== Unlocking ==
In android go to
settings -> System -> About phone and tap the build number 7 times.Then go to settings -> system -> developer options and enable OEM unlocking
Reboot to the bootloader and run "fastboot oem unlock"
Now select "Yes" on the phone screen with the volume button and use the power button to accept.
== Special key
Boot to bootloader: hold volume down + power button
till the screen turns on
Launch recovery: first boot to the bootloader, press the volume down button twice and press the power button to select