By rooting the Samsung Galaxy Note Pro 12.2 tablet with the CF-Auto-Root one-click rooting tool, you are getting the chance to grant rooting rights to the apps that need it to run. The Android operating system is very secure without root access because no apps can get into the root file system. However, with a rooted Android, you could grant rooting permissions to malware, and that becomes a problem if the malware then chooses to exploit those rooting permissions and start browsing through your tablet.
Coming across malware is rare and granting malware rooting rights is much rarer yet again because it takes an additional human error in not identifying what malware is. The CF-Auto-Root tool installs and enables the SuperSU on the smartphone and that SuperSU stops everything in its path. So the act of rooting itself does not make a device less secure. It is what happens next. Everyone with a thorough understanding of what they are installing can use a device with SuperSU without any malware getting into the system because they do not ever let it in. However, those with less knowledge and understanding might grant rooting permissions from SuperSU to malware without knowing it is malware.
As long as you browse the Google Play Store for your apps and install apps that are names you know you can trust online then there is never any worry about installing malware because you know those apps you are installing is not malware. For example, if I open the Google Play Store with my newly rooted Samsung Galaxy Note Pro tablet and download the Titanium Backup app and then nothing else for the day I know that I do not have malware because Titanium Backup is a trusted app and I downloaded the official app from a source of confidence. It is also very easy once you know what to do when you are online.
- You must have the Samsung Galaxy Note Pro 12.2 that has the SM-P905 model number to use this guide. There are numerous versions of the Samsung Galaxy Note Pro 12.2 that each come with their unique model number. Flashing the rooting file found in this guide on any other model number will brick the device almost always.
- You need to have a computer that is running a version of the Windows operating system to use this guide. The CF-Auto-Root tool is flashed with the Odin flashing tool and it is, in fact, Odin which needs the Windows operating system to run. Anyone who needs to get rooted but cannot get in front of a Windows computer can try running a Windows virtual machine on a Linux or Mac computer instead.
BEFORE WE BEGIN
- Unlock the Developer Options menu on the Samsung Galaxy Note Pro 12.2 SM-P905 tablet if it is not unlocked yet. Simply tap on the Menu > Settings > About Device > Build Number at least seven times. Just keep tapping on the build number and you know when to stop because a message appears on the tablets display which tells you that you are using the device as a developer now. As long as your finger is not in the way you cannot miss the message.
- Turn on the USB Debugging Mode from the Developer Options menu that you just unlocked on the Samsung Galaxy Note Pro 12.2 SM-P905. Tap Menu > Settings > Developer Options > USB Debugging. Leave the Developer Options menu once the USB Debugging is turned on and Android remembers your settings.
- Chainfire had the LRX22G.P905XXUABOK3 firmware build number running on the Samsung Galaxy Note Pro 12.2 SM-P905 tablet when he created the rooting tool developed in this guide. You do not need to be running on the same firmware build number that Chainfire was running to flash the rooting file in this tutorial. You find that it works on any version of Android 5.0.2 Lollipop software updates so long as you have the SM-P905 model number.
- There are new bootloaders that arrive in the software updates that update the Samsung Galaxy Note Pro 12.2 to newer versions of Android. New bootloaders can temporarily prevent the CF-Auto-Root tool from working. It should not happen for any Android 5.0.2 updates, but if it does then users must submit the new recovery image found in the new firmware creating the problems to the CF-Auto-Root tool thread made on the XDA-Developers website . Chainfire sees the message and then apply the changes required to get the rooting file working.
- Install the Samsung USB Drivers on the Windows PC  for the Samsung Galaxy Note Pro 12.2 tablet so when you content to the computer with the USB cable the Odin flashing tool can detect the device.
HOW TO ROOT SAMSUNG GALAXY NOTE PRO 12.2 SM-P905 RUNNING ON
- Download the CF-Auto-Root  tool for the Samsung Galaxy Note Pro 12.2 SM-P905 running on Android 5.0.2 Lollipop software updates.
- Open the Downloads folder on the computer and extract the rooting file to the Downloads folder, so the Odin flashing tool and the CF-Auto-Root tool files are now visible in the Downloads folder.
- Double-click on the Odin flashing tool’s executable file so that the flashing tool opens up on the computer.
- Boot the Samsung Galaxy Note Pro 12.2 SM-P905 into the download mode  and then connect it to the computer with the USB cable.
- Check that the ID: COM port that is available on the top left-hand corner of Odin is now displaying a yellow, or blue color which is there to let people know that the Samsung Galaxy Note Pro is connected to the computer and the USB Drivers from Samsung is working.
- Click the AP button from the Odin app on the computer and browse to the Downloads folder and select the MD5 rooting file to upload to Odin.
- Click the Start button from the Odin app on the computer and the rooting begins.
- Wait for the Odin to show a green box with a pass message inside before unplugging from the computer.
In conclusion, that is how to root Samsung Galaxy Note Pro 12.2 SM-P905 when it is running on the Android 5.0.2 Lollipop software updates by flashing the CF-Auto-Root tool by Chainfire. The version of the CF-Auto-Root tool in this guide is not the systemless root version like we get with the Android 6.0 Marshmallow software updates and the Android 7.0 Nougat, so that means you need to unroot from the SuperSU app that is now in the app drawer or by heading to the Sam Mobile website and flashing the correct stock ROM for your tablet.