If your Fit 2 is still technically "connected" to your phone but showing the download screen: Open the on your smartphone. Go to Band Settings > About Band .
In the world of Samsung smartphones, "Download Mode" (also known as Odin Mode) is a low-level diagnostic state used to flash official firmware. On the Galaxy Fit 2, the concept is similar but simplified. The wearable enters this mode when it is attempting to receive a firmware update from a connected smartphone via the Galaxy Wearable app. galaxy fit 2 the device is in download mode
Stuck in Download Mode? Here’s How to Fix Your Galaxy Fit 2 If your Fit 2 is still technically "connected"