These are the guidelines to install TWRP Recovery 3.0 on Google Nexus 6P smartphones using adb commands and a Windows computer.

REQUIREMENTS

• Custom recoveries are usually specifically made for a device. That’s the same yet again with this TWRP Recovery for the Google Nexus 6P smartphone. Do not flash this file on a different device.
• You must set up ADB on your Windows computer before you can follow this guide issuing adb commands from the command line.

BEFORE WE BEGIN

• Installing a custom recovery — whether it is TWRP Recovery, Philz Recovery or Cyanogen Recovery — will void the warranty on your device. You can always flash the stock recovery back on the Google Nexus 6P device and the warranty starts working again. Furthermore, you can continue swapping from stock to custom recoveries as many times as you want and the warranty will work.
• You may need to unlock the Developer Options menu so you can access the same for the USB Debugging Mode. Check your Settings to see if you have the Developer Options menu available. If not, unlock it now by tapping on the Menu > Settings > About Device menu and then tap where it says the Build Number. Continue tapping your finger over that Build Number until it says you are now a developer.

HOW TO INSTALL TWRP RECOVERY 3.0 ON GOOGLE NEXUS 6P

1. Download the TWRP Recovery 3.0 for the Nexus 6P from this link.
2. Install the ADB on your computer and have the folder open with the ABD inside.
3. Copy the TWRP file over to the same folder as your ADB so they are both in the same directory.
4. Connect the Google Nexus 6P smartphone to the computer with the USB cable.
5. Hold the Shift key and right-click the mouse within the ADB folder and choose to “open a new command window here” from the menu.
6. Type your first command: adb reboot bootloader
7. Type your next command: fastboot flash recovery twrp-3.0.0-angler.img
8. Check the Google Nexus 6P smartphone display for the fastboot menu.
9. Tap over the ‘Recovery’ option from the fadtboot menu on your display. The Nexus 6P will now boot up in the custom recovery you just installed.

You can choose to do anything you want to do from within the recovery mode now. Those who want to install a custom ROM can do that by tapping on the ‘Install’ option. Others wanting the NANDroid Backup can take over the ‘Backup’ option. Additionally, you can just choose to reboot the smartphone in normal mode by tapping over the ‘Reboot System’ option from the menu.