Question about Garmin zumo 550 GPS Receiver
This kind of issue appears because Sometimes the software acts up, and glitches occur on them,
To start of please turn the unit off firstly,
Press and hold the power button for 1 minute which will calibrates the screen for you.
Or try pressing the Power and the plus button together for a few seconds.
If that does not work you will have to update the Garmin web updater here below:
Updating the software should fix the problem, if the calibration fails,
Posted on Aug 06, 2010
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Posted on Jan 02, 2017
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