A lot of the older Lowrance units had an issue with some MMC/SD cards where they would not read them on the initial power up. The work around for this is to open the card slot after the unit powers up and slide the card out slightly so it no longer makes contact and then slide it back in. The unit should beep right away letting you know the card is recognized and then you'll have to select your map. This should work for you to avoid the hard reset each time and having to set everything back up again.
-Lawren
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