When people think about customizing a Samsung Galaxy A8 Pro smartphone they think about one of two things or both: installing a custom recovery or rooting a device. Those who enjoy doing booth rooting and installing a new recovery usually prefer getting root access by flashing the SuperSU from the custom recovery image. Doing so is the quickest possible way to have both on a phone. Moreover, many times people choose to flash a custom recovery and SuperSU from the custom recovery to get root access even if they are not planning on doing anything that typically requires a new recovery to be installed after getting root access. They do that because there isn’t always another way to go about it until Chainfire releases a version of the CF-Auto-Root tool which he likes to do for as many Samsung devices as possible.
- You must install a custom recovery on the Samsung Galaxy A9 Pro smartphone  before you can follow this guide.
BEFORE WE BEGIN
- Backup the data like the pictures, music and video files that are on the Samsung Galaxy A9 Pro smartphone before you get started with the guide just in case you want to take a factory reset after attempting to root. The act of rooting Android alone does not result in data loss when you flash the SuperSU from a custom recovery image, but sometimes people have issues and want to take a factory reset. By factory resetting the smartphone you are wiping the data and returning the device back to its factory state which means you need to rely on restoring a backup of the data if you plan on having the same data that was on the phone before you started. You can backup the Samsung Galaxy A9 smartphones by using apps like Helium, using a computer or by taking the NANDroid Backup option that is available from within the custom recovery.
HOW TO ROOT SAMSUNG GALAXY A9 PRO RUNNING ON ANDROID 6.0.1 MARSHMALLOW
- Download the SuperSU  from Chainfire’s repository page directly to the computer.
- Open the default downloads folder on the operating system which is appropriately named Downloads for Windows users.
- Connect the Samsung Galaxy A9 Pro smartphone to the computer with the USB cable that is used for charging the battery.
- Copy the SuperSU zip file to the internal storage SD card folder on the computer for the Galaxy A9 Pro that appears when you have the device connected to the computer.
- Unplug the Samsung Galaxy A9 Pro smartphone from the computer after the SuperSU is on the SD card and then power down the phone completely.
- Boot the Samsung Galaxy A9 Pro smartphone into the Recovery Mode  so that the custom recovery boots up on the display.
- Take the NANDroid Backup from the main recovery menu by tapping on the backup button if you have not backed up already.
- Select the Install option from the recovery menu and then follow the guidelines to browse the SD card and choose the SuperSU zip file that you transferred there earlier.
- Swipe the bottom of the screen where it says you need to swipe to install the SuperSU for TWRP users.
- Choose the Reboot option after the flashing has completed, followed by System to reboot the system from the recovery and it boots the Samsung Galaxy A9 smartphone back into the normal mode.
In conclusion, that is how to root Samsung Galaxy A9 Pro running on Android 6.0.1 Marshmallow software updates thanks to flashing Chainfire’s SuperSU from a custom recovery image. It does not matter what custom recovery that it is that you choose, as long as it has the option for flashing files which they all usually do. However, if you have opted for another custom recovery not named TWRP, then the steps slightly vary. Even with the steps worded differently, you should have no trouble getting the SuperSU flashed by following the same similar instructions.