[Galaxy Note Pro 12.2 General] najoor:
** DISCLAIMER: I AM NOT A DEVELOPER. I DO THIS AS A HOBBY AND SHARE MY FINDINGS IN CASE SOMEONE ELSE FINDS THEM USEFUL. **

** THIS WORKED ON MY DEVICE BUT IT MAY NOT WORK ON YOURS. APPLY AT YOUR OWN RISK **​

Background

AS of March 27, 2015, the most recent firmware for Note Pro 12.2 international version is the Russian P905XXUAOB1 (with CSC:P905SERAOB1 and Modem:P905XXUANA7), Since it doesn't seem that any country is in a hurry to push a lollipop update into this device, I made these files to update the tablet to the latest available firmware. The procedure is designed to achieve two thing: 1- by leaving the bootloader untouched, it is reversible to your current version, if you have the firmware corresponding to your current version at your disposal, 2- it gives you root.

This procedure should not in theory wipe your data but DO MAKE A BACKUP, in case.

And no, it doesn't trip the knox.

Upgrade Procedure

All files that you need are available at the link further down. The are zipped but you should unzip them before using them.

1- Backup everything you have on your tablet

2- Reboot the tablet to the "Download Mode" (by pressing down vol + home key when the device is rebooting, right before you see the first splash logo, then push Up Vol to continue).

3- Run PC Odin v3.09 and load these files (remember to unzip the files after downloading) :

BL: leave empty

AP: AP.tar.md5

CP: CP.tar.md5

CSC: CSC.tar.md5

Leave everything else unchanged and Start.

4- Let the tablet reboot. It will first go to recovery to complete the upgrade and then reboots and initializes your apps.

Note 1: This process should not erase your data but I suggest you do a factory reset yourself (provided you have saved you data somewhere)

Note 2: After the upgrade is complete, the tablet may run slow and get hot for about 20 min because all the apps are trying to get set up and catalog your system. However, if after 30 minutes is is still slow and hot, first try to wipe the data for Google Plus App. If that doesn't work you may want to disable Google Plus, or as a last resort do a factory reset.

Note 3: If you end up doing a factory reset, the tablet will start up in Russian. You can change the language to English at the very first step of the initial set up. After that, go to settings and change the keyboard and input language to English. Then everything will be OK.

Note 4: If you try this out and don't like it, download your old firmware (must match or be newer than what you had before) and flash your tablet back to how it was (you have to do a factory reset after the downgrading).

Root Procedure

If you need to root the tablet, do the following after you finish the upgrade procedure:

1- Install towelroot v3 on your tablet, but don't run it. The app is inside a zip file at the download site and you should unzip it with the password 12345

This is done because some systems flag this app as a virus when it clearly is not. There are two versions there in the zip file. Either one should work just fine.

2- Install SuperSU, but don't run it.

3- Reboot to download mode.

4- Run PC Odin and load ANC3_Kernel.tar.md5 in AP field and start.

5- Let the system reboot. You may get some force closings after the reboot but ignore them.

6- Run the towelroot app and make it rain!

7- Reboot to download mode.

8- Run PC Odin and load AOB1_Kernel.tar.md5 in AP field and start.

9- Let the system reboot.

10- Run the SuperSU app and let it update the binaries the "normal" way.

11- Allow it to disable knox for you.

12- If SuperSU freezes up for more than 5 minutes reboot your tablet and run it again. Everything will be fine.

13- Your tablet is rooted now.

Download Link

https://mega.co.nz/#F!491wSaQa!wxjErs3ZamrmEPKjYVi50A