The Fastboot Mode or Bootloader Menu is a sub-section of your Nexus 6P device, one that you can use if you are an advanced user and you're looking to unlock its bootloader or to flash any new firmware files.
If you read all the info listed in this post you will learn how to successfully boot your Google / Huawei Nexus 6P device in fastboot easily using only your hands. Also, in case you have rooted the Nexus 6P Android OS, then you can use various apps in order to boot it in Fastboot Mode.
The Fastboot Mode offers access to Recovery Mode and to other sensible Nexus 6P info such as product name, hardware details, model version, baseband number, carrier info, secure boot, product serial number and the Bootloader's Lock State.
If you're looking to unlock the bootloader of your device, then you should know that this process will remove every single file from your phone. So, before unlocking its bootloader you should create backups for all the important files.
How to enter Nexus 6P Bootloader / Fastboot Mode:
- Power off your smartphone.
- Next, press and hold Volume Down and Power, both at the same time.
- Stop holding the buttons when the Fastboot options are loaded.
- Now you can do anything you want using these options.
In case your device's bootloader has been unlocked and you've rooted its firmware, too, then you can use various tools in order to boot it in Fastboot Mode straight from its home screen. One app that I'm personally using without any problems is the QuickBoot tool. Remember that it will work only for rooted firmwares.
If you want to boot in Recovery Mode, then you can simply use the volume buttons in Fastboot Mode and select "Recovery Mode" option. Press Power button to select and load Recovery. This guide here should tell you more about the Recovery Mode.
If you're booting your Nexus 6P in Fastboot Mode and you connect it to your PC, but it isn't detected, then you will have to setup the Android SDK tools.
Download the Android SDK Studio from here. Install all the SDK tools, then find and launch the SDK Manager exe. Next, download and install all the required SDK packages and usb drivers.
After you setup the Android SDK you will also have to find the 'platform-tools' folder. The 'platform-tools' directory is listed under the Android SDK installation folder, and it is where you will need to copy all the files that you want to flash on your phone. The installation is done through a command prompt or using a terminal window for Linux-based operating systems.
Remember that the Fastboot Mode should be used only by Android advanced users, as you are risking losing data files and even bricking your phone's firmware.