https://support.garmin.com/en-US/?faq=3jcUI2xgHb0Q6MqIU2GbV8
How to Determine if a G1000 is Unlocked for Jeppesen Charts | Garmin Customer Support
Garmin Support Center is where you will find answers to frequently asked questions and resources to help with all of your Garmin products.
how tojeppesen chartscustomer supportdetermineunlocked