What is required to run the firmware update? A Windows or Mac computer with support for Internet Explorer, Chrome or Safari. The Slendertone Connect USB charging cable. Related articles How do I update the firmware on my Connect controller? What does the firmware update do? How long does it take to perform the update? Why do I need to install a program on my computer to update my Connect firmware? What is the Connect controller firmware? Comments 0 comments Please sign in to leave a comment.