Thread: How to update maps on a street pilot 2720

The setup.exe file from Navigasi gives you the choice of building a full default image file gmapsupp.img directly onto your computer hard drive for transfer to your unit, or installing a MapSource [PC] version from which you can create a partial or full map to send to your GPS. Regardless of which method you use, the resultant map image will have an MS Flag of 1, so it cannot be viewed directly in BC without changing it to 0. But of course if you use the installed version, that can be viewed in BC or MS anyway. So i guess you've used GMapTool just to change the flag on the image file.



The crowding is probably because you had checked 'Detail Level' previously when you were really only viewing the Global map not the actual CN. Uncheck it and see if the detail is less cluttered but even with Detail Level ticked the Garmin CN map seems ok to me:



What you see in MS/BC is not necessarily what will show on the GPS screen anyway. In my 2610 under Menu>Map Setup>Map Detail there is a choice of 'Most, More, Normal, Less, Least'. I leave mine on Normal usually.

To place a second map as gmapoem.img in the 2720 just use exactly the same procedure in Post #3 as for gmapprom.img with the name changed accordingly and rgn=50 [should work, i haven't tried it and it may not be selectable/de-selectable anyway], or much better method is to use MapInstall with a PC version to send what you want to the unit memory named as gmapsupp.img anyway.

The 2720 has 750MB of on board memory available for maps etc to be loaded [as far as i can recall]. There is quite a good review by Joe Mehaffey written at the time of it's release. The page link is below which will give you far more info than the Garmin spec page also below:

Code:

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Yes. 750MB was available over and above the already loaded NA mapping. So, as the OEM detail map is more in size than the ID map you intend to load then you should have even more free space after you replace it. US/CA V7 was OEM and would have been far more than 200MB, probably closer to 700MB back then, so I'm guessing maybe the flash drive is 1.5GB in the 2720.

Welcome to Noeman Road rider.

I moved your post into this thread because it's relevant here.

I assume you used one of the methods described on Page 1 here or a similar one to update your primary detail map. It is most likely you have loaded a locked image to your 2720. You don't need to remove the map, you can simply overwrite it with an unlocked image. Use gmapprom.img with the command line from bat file, or gmapsupp.img from MapInstall/MapSource to overwrite it depending on the name you've used for it [probably it's gmapprom].

Nothing to do with the maps, when you zoom out you see the Americas basemap. It still thinks it's in Texas because it doesn't have a sat lock in ID. Leave it outside with a clear view of the sky. If it hadn't acquired satellites within 30 minutes you have a problem, and maybe a software update will help. V7.20 from 2008 is the latest though.

If you want to check you have the ID detail map correctly loaded, you can set your location. Menu>Tools>GPS Info>GPS Settings>Set Position. Then zoom out until you see the continents on the base map and drag the map until you can see ID, zoom in and you should see street detail if the detail map is loaded properly. It will also show in the map page: Menu>Settings>Map>[Scroll right down]>Detail Maps [should show your new map enabled when pressed].

Two isn't enough for accurate fix. Leave it and it will eventually get more signals. Future lock-ons will be much quicker.