Special boot modes
Recovery
With the device powered off, hold Volume Up + Power.
Keep holding both buttons until the “MI” logo appears on the screen, then release.
Download
With the device powered off, hold Volume Down + Power.
Keep holding both buttons until the word “FASTBOOT” appears on the screen, then release.
Prerequisites
Install fastboot and adb. You will need the platform-tools from the Android SDK on your computer.
Install fastboot and adb. You will need the platform-tools from the Android SDK on your computer. http://developer.android.com/sdk/index.html#linux-bundle-size
Unlocking the bootloader
Note: The steps below only need to be run once per device.
See brand official unlocking site.
Developer Options = On / OEM Locking = On / USB Debugging = On On your device, go into Settings -> About and find the Build Number and tap on it 7 times to enable developer settings.
Press back and go into Developer Options and enable USB debugging.
From your computer, open a command prompt and type:
You should now be in fastboot mode.
Installing a custom recovery
Popular custom revovery tool: TWRP. Download: <recovery_filename>.img
adb reboot bootloader fastboot devices sudo fastboot flash recovery <recovery_filename>.img sudo fastboot reboot
Sometimes recovery is persistent:
Installing custom ROM from recovery
From custom recovery: Wipe and Format Data, Select Cache and System partitions and Swipe to Wipe
Method 1: SIDELOADING
From custom recovery Advanced > ADB Sideload From command line:
Method 2: PUSHING
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