If I understand the situation now your device is running some version of firmware earlier than v1.3.2 and you are being alerted by the app that a firmware update is available. I’m not sure what version of the app is alerting you but perhaps you can avoid the app entirely by updating directly on the device. Press the Main Menu button on the device. There is a Download icon in the main menu that should show that an update is available. Press that icon to initiate the download directly, bypassing your computer and the app. The download should proceed directly from the Line 6 website using only your router’s wifi connection to the Stadium device.