[Android Q&A, Help & Troubleshooting] ashishkafle:
I am not responsible if your device gets bricked or gets any other damage.Proceed on your own caution.

This is only for Huawei GR5 mini & P9 lite.

This might not work on EMUI 5.0

If you want to install a custom recovery then follow these steps:

At first you need proper drivers on your device

# Download ADB drivers on your pc and unzip it to any drive:

https://mega.nz/#!pfplUJ5J

#You need to have TWRP recovery file.Link is below:

https://mega.nz/#!tLAUEDqI

#Supersu.zip file :

https://mega.nz/#!BKI3XYQL

You also need to unlock your bootloader to flash a custom recovery image.

-To unlock your bootloader first you need to get your Unlock Bootloader code.So go to:

https://emui.huawei.com/en/plugin.php?id=unlock&mod=unlock&action=apply

-Login with your Huawei ID.If you don't have one then create it.

-Click on Download tab at the top of the screen.You will be redirected to a new window.Select Unlock Bootloader tab below the search tab.

-Agree to the agreement.Provide all the information and copy the bootloader code to a file on your pc.

Unlocking Bootloader

Be aware that after you boot unlock your device it will do a factory reset.So do a backup using HiSuite.You should Know how to do that

:good:

-First allow USB debugging mode in developer options.Also allow the device to be OEM unlocked in developer options.

-Go to the adb folder that you downloaded from above link and unzipped .Press shift and right click your mouse.You should see Open command window here option.Select it.Connect your device to the pc

-Type

adb devices

This should show your device Id.If your device is not detected try installing proper drivers.

-If your device is detected then type

adb reboot bootloader

This will boot your device to a window with white background and android like logo.

-Type

fastboot oem unlock 2222222222222222

Here replace 2222222222222222 with your boot unlock code.

-The device will prompt you to abort the process unless you don't want to.Select Unlock bootloader Anyway

Now your device will factory reset itself and you will have your bootloader Unlocked.Now you can flash TWRP recovery :) :)

Flash TWRP recovery

-

Download and Extract TWRP from the link provided above

-Put TWRP.img file in the adb folder.Connect your device to pc.

-Type

adb reboot bootloader

This will boot your device in fastboot.

In fastboot,if your device is unlocked it will show phone unlocked FRP unlocked in red letters.

-Now type

fastboot flash recovery TWRP.img

-

fastboot reboot-bootloader

Now remove the usb connector from pc and press the power button till your device turns off.Just as it turns off

Hold the power button + Vol. Up button

at the same time till your device loads bootloader

.This will boot your device into TWRP recovery.

Congratulations!!:laugh:

Change your language

Now if the language is in chinese or any other language follow these steps:

-Go to Settings marked by red in the main menu:

[IMG="Menu 1"]https://www.google.com.np/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwiI__fkpafTAhULNI8KHStNAMAQjRwIBw&url=http%3A%2F%2Fwww.guidingtech.com%2F59895%2Fle-2-rooting-guide-twrp-installation%2F&psig=AFQjCNHbHn5djNjgbD9QXTzeFWP26binzA&ust=1492374278759471[/IMG]

-Go to Language tab also marked by red:

[IMG="Menu 2"]https://www.google.com.np/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwi1iIzlpafTAhULvY8KHahjDucQjRwIBw&url=http%3A%2F%2Fwww.guidingtech.com%2F59895%2Fle-2-rooting-guide-twrp-installation%2F&psig=AFQjCNH4bbAklwI4sPuCAc7lYndrNuwcVg&ust=1492374278852512[/IMG]

-Select English

If you want to revert to stock recovery then you can just flash STOCK.img file

Root your device

To root your device you need supersu.zip file

Download it from link provided above.

-Copy the SuperSu.zip file to your sdcard.

-Boot into TWRP. (Power + Vol. Up)

-Select Install.

-Find supersu.zip file and select it.

-Swipe to confirm.

You are now rooted.

If you want to install custom roms,visit these pages:

https://xdaforums.com/huawei-p9lite/development/unofficial-huawei-p9-lite-t3540493/page12#post71806235

https://xdaforums.com/huawei-p9lite/development/6-0-1-aospa-paranoid-android-huawei-p9-t3544790

http://www.meticulus.co.vu/p/downloads_2.html