How to Deregister a Kindle

After deregistering a Kindle, you can link it to another account. Deregistering is helpful if someone purchased a Kindle for you and the Kindle is linked to their Amazon account.

The information below is from the Amazon page "Manage Your Kindle on Amazon.com"

Manage Your Devices

The Manage Your Devices page lists all of your registered Kindle devices and Kindle apps and allows you to update or change the name and Kindle e-mail address of your Kindle device. The page also lists the Send-to-Kindle e-mail address for each device which enables you to send personal documents to your supported devices. You can also deregister a device or app on this page, view warranty information, and manage Whispersync syncronization. Click the "+" icon next to the device name to display all options.
If your Kindle is lost or stolen, or you transfer ownership to another person, you will need to deregister your Kindle from your Amazon.com account.
To change your Kindle's name and e-mail address:

1. Locate the device and click the "Edit" link.
2. Enter a new name and/or e-mail prefix.
3. Click the Update button when finished.
4. A confirmation message appears above the device name on the Manage Your Devices page.

Learn more about your Kindle's e-mail address.
To deregister a Kindle:

1. Locate the device.
2. Click the "Deregister" link..
3. Click the Deregister button in the pop-up window.
4. A confirmation message appears above the device name on the Manage Your Devices page.