1) Reboot the phone into bootloader mode. There are 2 ways to do this.
I) The ‘hardware’ way.Advertisement
a) Unplug the USB cable and power off the phone.
b) Press and hold ‘Volume down’ then power on the phone.
c) Connect USB cable to your computer.
II) The ‘software’ way.Advertisement
a) Enable developer mode on the Moto E (Settings-> ‘About Phone’. Tap 7 times on ‘Build Number’)
b) Enable USB debugging. (Settings -> ‘Developer options’ -> ‘USB Debugging’ -> check)
c) Connect phone to computer via USB, you should see a new ADB device detected and drivers installed.
d) Open “Minimal ADB and Fastboot”. Type: