The software will attempt to activate automatically via the internet.

If prompted, enter the software and controller serial numbers exactly as they appear on your physical products, including all dashes and letters.

If automatic activation fails, a "Product Activation" window will appear with a unique 5- to 10-digit Activation Key . You can take this key and your serial numbers to the RealFlight 6 Online Activation Page to generate a final activation code. Troubleshooting Common Activation Issues The History of RealFlight | The Best RC Flight Simulator

This code is located on a white label on the rear of your InterLink controller. For version 6.5, it usually includes an "I2" or "I3" in the middle, such as XXXXXXX-I3-XXXXXX . Note that the middle section uses the letter " I ," not the number 1 . Step-by-Step Serial Number Update and Activation