Unlocking the Bootloader on most phones is normally pretty simple. It simply requires that you boot the phone into fastboot and then run the "oem unlock" command. That won't work with the Zuk Z1. The reason for this is that the device does not show up as a fastboot device. You have to specifiy the OEM id. The OEM id for the Zuk Z1 is 0x2b4c. You will also need to have the adb and fastboot files installed on your PC. Use the following commands to verify your bootloader is unlocked: adb reboot bootloader -i 0x2b4c fastboot -i 0x2b4c oem get-device-info (device unlocked should be "true") fastboot reboot You would be good to go at this point.