From Garmin site; to register your Garmin device, please visit the Garmin registration page online
. To begin, select the type of product you wish to register then follow these easy steps based upon the product selected:
Sign in to your existing myGarmin account or select the option to create a new account (if one has not already been created)1
If prompted, select Continue on the page titled "Getting Started"
Connect your device to your computer
Follow the steps to install the Garmin Communicator Plugin2
Confirm the device information is correct and select Continue
If you created a new myGarmin account, enter the required information and select Next (this step is skipped if using an existing account)
Your device is now registered in your myGarmin account. Information on your device and possible updates will be provided on the Registration Complete page.
Outdoor, Fitness, Sport, Marine and other devices:
Login to your existing myGarmin account or select the option to create a new account (if one has not already been created)1
Enter your device serial number3
Confirm the product name and serial number are correct and select Next
Your device is now registered in your myGarmin account. Select the option to Go to myDashboard to check for device firmware updates.
1 Multiple devices can be registered in a single myGarmin account.
2 The Garmin Communicator Plugin allows your device to communicate with your computer. If you are registering multiple devices, you will skip this step once it is installed. For browser specific instruction on installing the Communicator Plugin, click here
3 The marine device registration path also provides an option to register using the device unit ID as well as an option to register using a prepared card.
Note: For instructions on registering your nuvifone or garminfone, click here
Hope this helps.