After you log in to your Sparklight Online Account, go to the 'Services' tab on the top navigation menu. Then click on the sub-tab 'Upgrade.'
You'll see your current plan, monthly charge, and upgrade options. Please ensure your modem can provide your new speed. Sparklight requires customers to use a DOCSIS 3.1 or higher Modem. These modems incorporate the latest technology, can deliver faster Internet speeds, and have a longer expected lifetime. You can view a list of Supported Modems to learn more about modem capabilities.