Before you try anything like that and many a user has bricked their GPS Unit.
Try this
Garmin Edge 800 Factory Reset
There are a few instances in which it may be necessary to perform a master reset on the Edge 800. A master reset should be performed if the Edge is:
Not functioning properly
Needing to be restored to factory default settings*
Not receiving a satellite signal
To bring up language selection prompt if incorrect language text is showing
Unable to pair up accessories, such as the heart rate monitor or speed/cadence sensor
All settings, workouts, and satellite data will be erased when resetting the GPS.
Workouts can be backed up in Garmin Connect.
Refer to the FAQ article "How can I backup my personal settings and profiles on my Edge 800?" to back up personalized settings.
From Garmin
Spoiler: Backing up Edge 800 Settings and Profiles
To perform the master reset:
Power device off
Press and hold Lap/Reset and Start/Stop
Power device on while still holding both buttons
Continue holding buttons when the Garmin "splash" screen appears
Release buttons when Garmin "splash" screen disappears
The Edge 800 is now reset. Leave the device outside with a clear view of the sky for a minimum of 20 minutes to acquire satellite data.
*A User Data Clear can be performed in order to remove personal settings without removing history.
To perform the User Data Clear:
Power device off
Touch and hold finger in top-left corner of display
Power device on while still maintaining pressure on display
Release display when the Reset device settings to factory default? message appears
Touch Yes
This will erase personal settings, such as the user profile. However, saved activities will not be removed.
But before you try any of this please read it over again to make sure you know what you are doing........
Bookmarks