For those of you who want to return your rooted Galaxy Note 3 back to stock factory status, you can by unrooting your Note 3 with ODIN and stock official firmware.
This will allow you to fully unroot your Galaxy Note 3 and make it just like the day you got the phone. Also for international models like SM-N900 or SM-N9005, you can use this method to change the country firmware. E.g. You bought your phone in India and you want to use it in France but your phone doesn’t support French, you can install French firmware on your Indian Note 3.
And for those of you who want to just run stock, I don’t recommend this method (only for warranty/returns) but instead find a rooted stock ROM in ZIP format you can flash using CWM or TWRP recovery, that way you can keep your CWM/TWRP recovery and run stock ROM.
This unroot method may ERASE EVERYTHING ON YOUR PHONE, so please MAKE A BACKUP before proceeding!!!
Step 1. Turn your Note 3 power off. Then hold down Volume Down, Center Home, and Power buttons together for about 5 seconds until you see a warning screen.
Step 2. Hit Volume Up to enter ODIN Download mode and connect a micro-USB cable from your Note 3 to your computer.
Step 3. Go to Galaxy Note 3 stock Firmware page to find your stock firmware for the Note 3 you are using. Make sure to download the correct firmware!
Step 4. Once downloaded, unzip the stock firmware and you should find a file ending in .tar.md5.
Step 5. Run ODIN. If you don’t have ODIN program, download ODIN here and run it.
Step 6. When ODIN program runs, you should see a yellow-highlighted box. If you don’t see it, try downloading Samsung USB drivers and install it. Then re-plug your micro-USB cable.
Step 7. DO NOT TOUCH ANYTHING ELSE but clock on "PDA” button and browse your computer to find the stock firmware you downloaded earlier that ends with "tar.md5″.
Step 8. Hit "Start” button and let ODIN program install 100% stock official firmware on your Note 3. This should take around 10-20 minutes.
Step 9. Once done, your phone will reboot and you should see "PASS!” in ODIN program. If you see this, you did it successfully. If for some reason you get "FAIL!” and/or you see "firmware encountered error” message on your Note 3, don’t worry and just try running the ODIN program again and re-flash stock firmware until it succeeds. You may have to try another USB cable or port to make it work right. If you still have trouble, try using another computer.
Step 10. In this particular case, my phone rebooted and stock firmware was installed but none of my apps/settings/photos/videos were deleted. In most cases, stock firmwares do erase everything. Now, if you goal was to just run stock firmware you can stop here. If you want to totally reset your phone and wipe everything on your phone to return your phone for warranty, keep going.
Step 11. Turn your phone off then hold down Volume Up, Center Home, and Power buttons together for about 3 seconds until you see "recovery booting” message at top left.
Step 12. Once in stock recovery, choose "wipe data/factory reset”. THIS WILL ERASE EVERYTHING ON YOUR PHONE!!!
Step 13. Choose "Yes”.
Step 14. Once rebooted, you should see the same welcome message you saw when you bought your Note 3.
