For more information on what the Bootloader is and isn't please visit his thread here: http://forum.xda-developers.com/show....php?t=2655674.
I do not own a Note 3 so I have not been able to test this as I would normally prefer to do before releasing. I do however feel comfortable that it should work as designed.
Before proceeding please verify that you are already on either the NAB or NABD builds. If you are, feel free to proceed.
If you are not DO NOT proceed, you will brick your device.
1: Download the NAB Engineering or Stock Bootloader One-Click.
"SM-N900P NAB Engineering Bootloader.exe"
2: Start the Odin One-Click.
Navigate to the location where the Bootloader.exe was saved.
Double-click on Bootloader.exe". *On Vista or newer, you may need to right-click on the file and Run as Administrator.
3: Place phone in Download Mode.
- Power phone completely off.
- Press and hold Volume Down, Home and Power buttons, all at the same time.
- Release the buttons only when the ‘Warning!!’ message appears.
- Press [Volume Up] to enter Download mode.
4: Connect USB cable to PC and phone.
Odin should show a yellow COM port in the second column. If you do not see a yellow COM port, you may need to run the Odin One-Click as Administrator and/or unplug/plugin the USB cable after starting Odin One-Click.
5: Start Odin flash process.
6: Complete - PASS!
Status should change to green PASS! At this point your phone should automatically reboot.
[ODIN]SM-N900P NAB Bootloaders (Stock & Engineering)(One-Clicks) , ROM for the Sprint Samsung Galaxy Note 3
ROM OS Version: 4.4.x KitKat
Last Updated 2015-02-12