I have a Lowrance hds7. How do I get the gps on it. Is it in The system or do we have to download something for the gps to work.

SOURCE: Need a fully working Lowrance 250C GPS Sd card

I have had a similar problem and founf this site where you can get a new card that will work for your GPS. Info, pasted below:
The Nextar GPS-MAP09SDC SD card with updated navigational maps and information has a MSRP of $69.99. Please visitwww.nextar.com to purchase the map upgrades and for more information on upgrading your maps.

Posted on Oct 21, 2010

SOURCE: Lms 520c 5" Screen Color External Gps And 200 Khz Sonar System: I have a Lowrance LMS 520C on my boat. The GPS wi...

I have the same problem on my 520C.
I have no solution but I hope you have find some?
Best regards
Dan

Posted on Oct 31, 2010

SOURCE: i want to unlock the

Hello

In order to protect the markups of local resellers Lowrance have built into its US versions of its HDS GPS/Sounder units a "Geo Fence" that monitors where the unit is. Units built with US base maps (identical to worldwide versions except they have a more detailed map of north America and cost literally half the price) will deactivate metric units, all languages except English and continuously flash up on the screen a warning "this unit is not for use in your area. please contact your local reseller"

You have obviously purchased a unit that is made for only the USA and so far there is yet to be a fix for the problem of geo fencing.

it is written into the "firmware" that is programmable components, that need "code" to be written to and changed, it is fairly common in the computer/electronics industry, now how true that is I dont really know, but it is not a simple software driven thing, firmware (as the name implies) is the layer between hardware and software. Supposedly the units "knows" via hard coded data where it is and where it is supposed to be, and as soon as an update is downloaded, or an OS unit is started up in Australia it throws a wobbly and has a whinge big time.

What's interesting about this is that international units do not have this issue, hence you could purchase one for your yacht and travel around the world.

So my advice will be for you to purchase an international version of the gps so you can use it in any part of the world.

Posted on May 02, 2011