To update your android device to the newest version available you will need:
The device's newest version(check your device at the right panel and look for the newest stock rom) : http://e6003e78.linkbucks.com
Odin Multidownloader v4.38 : http://f3c71ee5.linkbucks.com
Tass_v1.0.ops : http://8f10ed3d.linkbucks.com
Download and keep all these in a file on your desktop for easy access.
Step 1: Launch Odin Multidownloader V4.38
Be sure to tick One Package , Auto Reboot and Protect OPS on the left side of the application.
Below select OPS, click OPS and search for Tass v1.0.ops that you downloaded.
Click One Package at the bottom of the application and seach for your md5 (the newest update for your device) you downloaded.
Step 2: Setting Up Your Device
Turn off your device.
Hold down (Volume down + Home Button + Power button) to enter download mode. (different device may have different ways.Google it.).
It should look like a yellow triangle.
Step 3: Connect You Device to the Computer
Connect your device via USB.
In Odin , you should now see a yellow box under COM Port Mapping indicating your device is detected.
Hit the start button and be patient.
After your update has finished you should see a blue box at your top left corner.
Step 4: Finish!
Your device should now have the latest version of Android.
However,i do recommend you to do a backup of all your apps(Titanium backup) and perform a factory reset (Menu>settings>privacy>factory data reset).