What it means
Deregistration removes a Kindle, Fire, Echo or other supported device from an Amazon account and disconnects it from account services and purchased digital content. Factory reset clears settings and local data on the physical device according to its model's procedure. Doing only one can leave either an account association or local personal material behind. Amazon says a deregistered device can be registered again by its rightful owner.
A real-world example
A household sells an Echo after resetting it, but the account's Devices list still shows a similar-looking unit. The owner compares serial details and deregisters the exact one before final transfer.
What to do
Check the device identity in Manage Your Content and Devices, deregister it, then perform its model-specific reset. Confirm it starts at a clean setup screen and no longer appears under your account. Preserve needed files before erasing.
The distinction that matters
Deregistration is not an emergency remote wipe. If the device was already lost, use other available platform controls, review account activity and consider credential changes. Factory reset before a backup can destroy personal files, while deregistering the wrong device can interrupt a working household member's library or smart-home setup. The recipient should register with their own account; never give them your password just to restore a purchase.
Amazon device deregistration
