Please fill out the warranty card on your new LibertyBOSS and then email it back to info@marsbiomed.com or fax it to 905-723-9610. We will then send you a pre-paid FedEx label and a certificate of compliance. Print out the FedEx label, affix it to the box that contains the old LibertyBOSS and then simply call FedEx to come to pick up the old LibertyBOSS.