Before doing the methods, I just want to warn you that. By doing this, you will loose the warranty and sometime if you dont read the steps and do something wrong can brick your device. So be careful

What you need:

1) Laptop or PC 2) Charge your phone to atleast 70% 3) Back up your device just in case if you need it later 4) Download ADB and Fastboot Tools to your PC and Extract it in C Drive and Rename it to SDK 5) Download Lenova Drivers and Install it

  • First of all enable the Developer Option
  • To Enable the Developer Option, Go to your Settings -> About Phone -> Now Tap on the Build Number 7-8 Times until you see a toast message “Developer option enabled“
  • Now go to Developer option in the settings and Enable OEM unlock
  • Now connect the PC to Mobile with USB Cable
  • You need to Reboot the phone into Bootloader –
  • adb reboot bootloader
  • Now in your Computer or Laptop,  Open the SDK Folder and Open the Command Window by Pressing the Shift Button + Right Click on the Mouse simultaneously.
  • To Unlock the Bootloader, Use the Command in the command window to unlock the bootloader
  • fastboot oem unlock
  • Done! Now you can Enjoy flashing new Custom rom like Cyanogen, Unicorn, etc

adb reboot bootloader

fastboot oem unlock