Found this tutorial and looks to be simple. Does it sound about right? I can restore to 4.0.1 (file on Mac) without upgrading with this tutorial?
http://www.cultofmac.com/how-to-dow...shs-stored-on-file-with-cydia-using-mac/29359
http://www.cultofmac.com/how-to-dow...shs-stored-on-file-with-cydia-using-mac/29359