Complete Fix Solution

Samsung Galaxy Note 3 Neo (3G) SM-N750 users who wish to root their devices, may follow the tutorial below.

This tutorial uses CF-Auto-Root file released by Senior Recognized XDA-Developers, Chainfire. Head over to the CF-Auto-Root main thread to learn more about the root method.

Disclaimer: Rooting voids the warranty of your device. We and the developer of this rooting procedures shall not be held responsible if any undesirable outcomes may happen to your device. use of this root guide is solely at your own risk!
Pre-requisites
1. Install USB Driver for Samsung Galaxy Note 3 Neo on the computer.
2. Enable USB Debugging Mode on the phone by navigating to Settings >> Developer Options.
3. Make a backup of all your important data before following the guide.
4. Ensure the battery of the phone is charged more than 80 percent.
5. The CF-Auto-Root file works only on the 3G version of Galaxy Note 3 Neo (SM-N750). Applying this to any incorrect variant might brick the device. Verify the model number of the Galaxy Note 3 Neo by navigating to Settings >> About Phone.

Files Required
1. CF-Auto-Root (CF-Auto-Root-hl3g-hl3gub-smn750.zip)
2. Odin 3.09

Steps to Root Galaxy Note 3 Neo (3G) SM-N750 Running on Android 4.3 Jelly Bean Firmware
Step 1: Extract CF-Auto-Root and Odin 3.09 files using WinRAR/7-Zip/WinZip or any other extracting tool.
Step 2: Switch off the Galaxy Note 3 Neo. Then boot the device into Download Mode by pressing and holding Volume Down, Home and Power buttons together until a construction Android robot icon with a warning triangle appears on Lcd. Now press the Volume Up button to enter Download Mode.
Step 3: Launch Odin on the computer as an Administrator.
Step 4: Connect the Galaxy Note 3 Neo to the computer using USB cable while it is in the Download Mode. Wait until Odin detects the device. When the device is connected successfully, the ID: COM box will turn to light blue with the COM port number. Additionally, the successful connected will be indicated by a message saying Added.
Step 5: In Odin, click the AP button and select the CF-Auto-Root-hl3g-hl3gub-smn750.tar.md5 file.
Step 6: Verify that Auto Reboot and F. Reset Time checkboxes are selected in Odin. Also, ensure the Re-Partition option is NOT selected.
Step 7: Double-check and click Start button in Odin. The installation process will now begin.
Step 8: Once the installation process completes, your phone will restart and soon you will see a PASS message with green background in the left-most box at the very top of the Odin. You can now unplug the USB cable to disconnect your device from the computer.

Samsung Galaxy Note 3 Neo (3G) SM-N750 running on Android 4.3 Jelly Bean is now rooted successfully. You can now install any app that requires root permission. Verify the root status of the device by downloading Root Checker app from Google Play Store.

Note: Many Samsung devices store a flash counter that keeps track of how many times you have flashed custom firmwares to your device. Triangle Away can be used to reset the flash counter to zero.

How to Fix "Unfortunately, SuperSU has stopped"?
Step 1: Download and install the latest APK of SuperSU on your device.
Step 2: Open SuperSU app (update the binary if prompted) and allow it to disable KNOX.
Step 3: Reboot your device.