What do I need to run the firmware update? A Windows/Mac computer with support for Internet Explorer, Chrome or Safari. The Slendertone Connect USB charging cable. Related articles What does the firmware update do? Why do I need to install a programme on my computer to update my Connect firmware? I have installed the Connect app but can't find it on my smart device Where can I download the Slendertone Connect app? How long does it take to perform the update? Comments 0 comments Please sign in to leave a comment.