If the GPS light is flashing green: The GPS light blinks green while SPOT sees the GPS satellites and is looking for a GPS location. Once the GPS location is obtained, the GPS light and Message Sending light blink green
approximately 15 seconds to notify you that your message was sent with your GPS location.
If the GPS light is flashing red: The GPS light blinks red if SPOT doesn’t see the GPS satellites and /or can’t find your GPS location. You should move to a location with a clearer view of the sky.