(Upgrade Code) Upgrade your i1 DisplayLT to an i1 Display2 which will allow you to Calibrate and Profile your Monitors with the advanced features.

Download the latest version of i1 Match from http://www.gretagmacbeth.com/products_eye-one-match_software

Where do I find my serial number?

Your serial number can be found on the bottom of your i1 Display. See sample below.