Here are some suggestions that could solve the problem and prevent you from having to be without your unit!
* Update the Software: Make sure your unit has the latest software version. Click here to go to the Software Update page on Lowrance.com. You can download the update for free.
* Reset the Unit: Sometimes resetting your unit can solve unusual issues. Click here to access a list of reset procedures for Lowrance products. Locate the one that applies to the model you own. Try a Soft Reset first, this will return your settings to factory defaults.
If you decide to try a Hard Reset, save any important stored data to an MMC or SD card or write the information down. The data will be deleted during this process.