If you have installed a lot of hacks and modifications on your Samsung Galaxy Note 3 Neo, you might want to get back factory firmware to get rid of all hacks and enjoy stock Samsung android experience. Fortunately you can easily revert back to official Android 4.3 by downloading its official ROM.
To install it, you must have odin, the actual firmware files and a USB cable. To flash, put your Note 3 Neo in download mode. To do that, press and hold home button to get into download mode. Once it is in download mode, connect your Samsung Galaxy Note 3 Neo to the computer and select the file in PDA. Click on the Start button to start the flashing process.
It can be very useful to those who have installed note 3 neo custom recovery and custom firmwares like AOSP and so on. By following above steps you will be able to revert back to original state. So your custom firmware, recovery and root will be removed from your Note 3 Neo.