Many manufacturers of AEDs program their new units to follow the most current protocols for CPR and the use of AEDs recommended by the American Heart Association. When new AHA guidelines are announced, these manufacturers often make software available to upgrade previously purchased units. AHA Guidelines were last updated on October 18, 2010. If you own an AED not compliant with these guidelines, click AEDUpgrades.com to view upgrade options.The products below may also assist you to upgrade your AED.