In a nutshell, the instructions sent with the tuner explain how to pull the codes they need. Then once you get the email, there will be two links. One will update the drivers, the other will update the tuner, and set up a program on your desktop. Make sure you look at all windows that pop up so your device is updated (OOOPPPS) BEFORE removing the cable. Once it updates, open the desktop icon, and your files will load automagically. i had 5 files to download. The first one is actually your stock tune, the other 4 are the ZOOOOM files. call me if you have questions/problems.