How to Master Reset Edge 520

• Turn device off
  
• Hold the Down key while powering on the device
  
• Continue holding the down key until the “Factory Reset” prompt appears
  
• Select OK to clear
  

• Turn device off
  
• Hold Lap/Reset and Start/Stop
  
• Press and release the power button
  
• Continue to hold only Lap/Reset and Start/Stop
  
• Release Lap/Reset and Start/Stop when the Garmin Logo is cleared
  
• The unit will restart and clear non-vol
  

Well . . .  what does?

Non-prompted Non-Vol Clear

This worked for me, though I had several attempts. None of the other ways worked, just had the "Garmin" screen and no response to any inputs

It happened using a MAC to load route files

Thanks