How to Update Official Android 4.4.2 N900XXUDNA6 Firmware in Galaxy Note 3 N900

Tools Requirements:-

1. Original USB cable.

2. Charging Your battery up 80%.

3. Samsung Galaxy Note-3 Driver:- Click here to Download

4. Download Official 4.4.2 Kit Kat :- Click Here to Download 

5. Samsung ODIN V 3.07:- Click here to Download. 
Instruction:- This Official 4.4.2 Kit Kat is works only Samsung Galaxy Note-3 N900 so don't tray to other Samsung Devices.
Must Read:- How to Check Root & Unroot Any Android Mobile.
Must Read:- How to Install ADB Drivers of any Android device with PdaNet

Installation Process:-

1. Enable USB Debugging in your device.

2. Switch OFF your Samsung Galaxy Note-2 N7100

3. Open the device to Download mode. (To do this Press and hold  volume Down + power button

    + Home button Download screen should appear.)

4. After 2 second WARNING! Screen appears. Press the 'Volume UP' button to enter Download 

    Mode. Now connect your Samsung Galaxy Note-2 in your PC through USB Cable.  

5. Run the ODIN application on the desktop. When the device is connected successfully, the ID: COM

    boxof ODIN screen will turn Blue or Yellow with the COM port number. & 'Added' should appear in

    the message box in Odin.(If not, then install  Samsung Galaxy Tab-3 USB driver successfully then 

    check it again.) (Other wise don't apply next step)

6. Now from the ODIN Application screen
     A. Click the PDA button and select .tar or .md5
     B. Click on ‘Phone’ then choose file with ‘MODEM’ in its name. If the file doesn't exist, ignore this
          step.
     C. Click on ‘CSC’ then choose file with CSC’ in its name. If this file doesn't exist, ignore this step.
     D. Click on ‘PIT’ then choose file with .pit file.However if this file doesn't exist, then ignore this one.

Note: Ignore the last three steps (B, C and D) in case such files are not found.

7. Tick only Auto Reboot and F.Reset Time check boxes are selected in ODIN Screen.
    Tick Re-Partition option, only if the .PIT file is selected in the step 6.(If .PIT file select then tick
    Re-Partition other wise don't Tick Re-Partition box.

Note:- Verify everything suggested in Step 6 and Step 7 is done correctly.
8. Now Click the Start Button from the ODIN application and wait for some time to flash the file.
9. Wait Until Process Finishes. As Soon As Process Done, You will See That The ID:COM Section is
    Turned Green With The Message “Pass”.
10. After Getting “Pass” Message, Disconnect Your Phone From The PC.
11. Now your  Samsung Galaxy Note-3 N900 successfully Update Android 4.4.2
Enjoy your Samsung Galaxy Note-3 N900 successfully Update Android 4.4.2
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Don't used this process to other devices other wise your mobile is damage.
Note:- I am not responsible if you make any mistake and damage or any other problem your devise.