If you are using an Acekard 2.1 purchased around December 2009, you must use AKAIO v1.7+. Due to an unreported hardware change, saving required an update which was added into AKAIO v1.7. Acekard has since gone back one revision and the Acekard 2.1 manufactured around December 2009 is no longer made or available for order from Team Acekard.