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Old 06-02-2013, 01:13 PM   #1
jrsue OP
Joined: Jun 2002
Oddometer: 95
478 and gpx2img

Question about loading a map set onto the 478.

I just got from a ebay a used 478. It came with nothing battery was toast. After putting a new battery in it everything works fine. My question is, will it erase the preloaded North America City Navigator ver. 8, if I attempt to load in a few roads and recreation counties, and or if I load a gpx2img map set. If I'm not mistaken it allways says "erasing previous maps".

If it does erase the preloaded City Nav, then I'm screwed because I do not have a cd....Correct??
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Old 06-02-2013, 03:05 PM   #2
Steve W
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Joined: Apr 2008
Location: Rocky Mountains of Alberta
Oddometer: 671
Loading the secondary maps with MapSource will put them on an installed Garmin data card. The internal maps remain intact unless you use a separate program, IIRC MapUpdater. You may have to pick up a data card.

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Old 06-02-2013, 06:05 PM   #3
jrsue OP
Joined: Jun 2002
Oddometer: 95
Ok thanks, so I will pick up a data card and then I should be good to load a few MS Roads and Rec. counties.
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Old 06-02-2013, 11:13 PM   #4
Hill Climber
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Joined: Feb 2007
Location: Kaslo BC summer, Yuma AZ winter
Oddometer: 398
Always do a backup

I always back up the internal memory to a file on my desktop, just in case I screw something up. Especially the map "gmapprom"
I do this to every gps I own, the day I bring it home from the store.
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Old 06-12-2013, 09:28 PM   #5
Alps & Dirt Roads
Joined: Aug 2004
Location: Vitemölla, Österlen, Sweden
Oddometer: 134
The battery is probably OK. But if totally emptied by the clock in the GPS it will not charge.

The battery has built in electronics that require battery power to run (!). Force charge the battery with an external source for a few seconds and then it can be charged normally in the unit.

Always remove the battery when storing a 276, 376, 278, 478.
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