1. Press & hold the Power button to turn off the phone.

2. Press-hold the Volume Up and Down buttons for three seconds or so. Press and let go of the Power button as you hold them.

3. Then select option Fastboot by using to navigate Volume Down, and to confirm Volume Up.

4. Android logo will appear on-screen. When it does, press-hold the Volume Up button for three seconds. Press and let go of Power button as you do.

5. Voila, you now should be in Fastboot mode.