How to install Android M developer preview 2 on your Nexus 5, Nexus 6 or Nexus 9

After being released at Google I/O 2015 in late May, the Android M Developer Preview has just seen the first of three planned updates prior to its final release. In this tutorial we'll show you how to install Android M Developer Preview 2 on your Nexus 5, Nexus 6, Nexus 9 or Nexus Player.

• Everything you need to know about Android 
• When will I get Android M?

How to get the Android M developer preview 2

If you want to know how to flash Android M, it couldn't be simpler. The Android M preview works just like any other Nexus factory image - simply download the file and flash it.

Prerequisites

• Your phone must  be rooted
• Backup your app data with Titanium Backup 
• Download ADB Tools and unpack the zip file
• Download Android M preview for your Nexus(StephanMC-Android-M-Preview-2-hammerhead.zip)
• An unlocked bootloader
• USB Debugging enabled
• Drivers installed on your computer

How to install

• Boot in recovery (TWRP)
• Wipe only Data, System, Cache, Dalvik-cache (do not wipe Internal data, unless it is what you want)
• Flash your Rom(StephanMC-Android-M-Preview-2-hammerhead.zip).
• Reboot. If TWRP prompt you to install SuperSu.