What do the different blinking patterns of the LED represent?

The white LED has a few different patterns to indicate status:

• two short blinks repeating: The SmartPlane is connected to your phone, and is ready to fly.
  
• slow on/off blinking: The SmartPlane is turned on and waiting for you to connect.
• fast on/off blinking: The battery is being charged.
• very fast blinking: The firmware is being updated to the latest version.