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Map loading problem posted on 1 May

Map file name extention is geotiff. Loaded to phone and it sat on immage folder.

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Hi again,

To my knowledge, am afraid it is not possible. A *.tif image is very basic graphic file whereas an *.sis is a simulated 3D image.

Perhaps you can try doing a Google for "convert *.tif to *.sis".

Good luck with your project.

Posted on May 03, 2008


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How do i delete downloads from a moto e

I hope there is a file/folder viewer in your android phone. If not, install any file explorer (Ex : ES File Explorer). Open that application and go to your device storage. From there you can check the downloads folder and delete whichever files you want.
Please let me know if it doesn't work.

Feb 05, 2016 | Cell Phones


NOW INSTALL FONTS ON N95 8GB 1) Install FontRouter (Fontrouter...


1) Install FontRouter (Fontrouter LT+FontrouterMan)in your memory card, or mass storage in N95 8Gb
2) using the x-plore app, make a folder in phone memory (C:/) named fonts
3) Move the fontrouter.ini and paste in c:\data\fonts
4) edit the fontrouter.ini file with x-plore like this:-
search at:
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and change it to
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exit and save the file
5) Copy your *.ttf font to c:\data\fonts
6) restart the phone, and there's your new font!

if you afterwards want to change your font
edit the fontrouter.ini file again and change
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on May 09, 2010 | Cell Phones

1 Answer

Not reading sd card

did you check what format the sat nav recognises before you down loaded the information on to the sd card.

Apr 27, 2013 | Acer e310 Handheld GPS Receiver

1 Answer

After update, tried to restore data on my device, mac crashes and now my device can locate the map. It's on the device, but it doesn't load.

hello iff you follow the steps here you will be sorted 1. Make a complete Explorer, not Home, backup of your unit's contents. Ensure hidden files/folders are showing.

2. Go to the location of your downloaded map. you'll find it in this location:
C:\Documents and Settings\yourname\My Documents \ TomTom\HOME\Downloads\complete\ map\

(Substitute your specific map name every time you see your_map_name in these instructions.

It's a cab (compressed) file.

3. Within the compressed cab file, if you look at the contents, you should see a file, perhaps a couple of .gif files, a your_map_name.toc file and, importantly, an file.

4. Use Winrar and extract the contents of the file into the current your_map_name map folder on your unit. If you don't have a folder called your_map_name, then create one using Explorer.

5. Then, extract the file in the file into the same your_map_name map folder on your unit. You don't need to worry about the other files.

6. Make another Explorer backup of the unit's contents to a different folder on your computer.

7. Disconnect the unit PROPERLY from the computer using the Safely Disconnect icon in your notification area of your desktop.

You are done!


Mar 20, 2011 | Tomtom One XL GPS Receiver

1 Answer

I have lost all UK & Europe mapping - except for major roads. This was initially built in to unit. Have SD card for Australia & New Zealand - this works fine.

The maps are stored in specific mapset files with *.img extension in the flash memory of the GPS unit. Each mapset file contains one or many maps in it. Beside that, the Garmin GPS navigator can also recognise and load up one additional mapset file from SD card residing in the "Garmin" folder and named as "gmapsupp.img".

Here are the mapset files supported by Garmin Nuvi 255w GPS navigator:
  • gmapbmap.img - the default base map
  • gmapprom.img - the primary mapset
  • gmapprom1.img - the secondary mapset
  • gmapoem.img - the OEM mapset that cannot be unselect by user (if it exist)
  • gmapsupp.img - the supplemental mapset which you can have one in the GPS flash memory and another one in the attached SD card.
Therefore, the Garmin Nuvi 255w GPS supports up to 6 mapset files, including 1 in SD card. Normally new maps installed by the user will be stored in gmapsupp.img.

You will lost all the maps in the previous mapset file if it is overwritten by a new file with same filename. If you want to keep the existing maps, ensure that you store the mapset file with an unused filename (from the 5 filenames above). Alternatively, you can make use of special tools to merge new maps into existing mapset file.

You can view the name of your base map in Tools > Settings > System > About > Basemap.

You can view the name of maps in the other mapset files in Tools > Settings > Map > Map Info. There, you can tell the GPS to load the map by checking on its name, or not to use the map by unchecking it.

In case there are 2 or more non-overlaping maps available for the same location, the map with the highest priority number (defined in the map itself) will be used by the GPS.

Note that certain map which are locked by vendor need a 25 bytes unlock key stored in a *.unl file in the same folder and with the same name as the mapset file where the locked map is stored in.

You might probably also interested to read:

Mar 13, 2011 | Garmin nuvi 255W GPS Receiver

1 Answer

Gps has lost its maps, screen says can't unlock maps

There several reasons you may receive the message Can't Unlock Maps on your nuvi or zumo device.
  • Can you press OK and get to the Where To/View map screen?
  • Did you load maps to the unit using the MapSource or MapInstall program?
  • Did you load maps to an SD data card?

If one of the points above applies to you, please follow the steps below to clear the Can't Unlock Maps message:
  1. Remove SD card from unit, if applicable.
  2. Plug the unit into your computer with a compatible USB cable.
  3. Open MyComputer/Computer icon. (Mac users skip this step.)
  4. Right-Click on the Garmin drive and select Open. (Mac users can locate the Garmin drive mounted on the Desktop.)
  5. Open the Garmin folder.1
  6. Locate a file named gmapsupp.img
  7. Right-Click and delete file named gmapsupp.img
  8. Safely disconnect your unit from your computer to see if the Can't Unlock Maps message is gone.

1. Nuvi 1100/1200/1300/1400/1600/3700 and Zumo 665 users will open the Map folder instead.

*If the gmapsupp.img file does not appear in the Garmin folder, please create an unlock file for device.

Nov 28, 2010 | Garmin Nuvi 265W GPS Receiver

1 Answer

Error message,failed to open file:igo/480_272/loading.bmp exiting application. clarion map 670 sat nav,seems to be in constant loop trying to pair phone on bluetooth and above error appears when selecting...

The solution that worked for me is: in your iGO installation folder, open SYS.TXT file then find section [interface] next check if exist something like this: skin="ui_igo8" if not then add it, but you must first check in your DATA.ZIP file what is the name of the folder it can be ui_igo8_da, ui_igo8_pda... depending on version. After that iGO will load normally. One more thing, I've added this section at the end of SYS.TXT file [loading] show_statustext=1 show_progressbar=0 progressbar_x=62 progressbar_y=174 progressbar_bmp="loading_progressbar.bmp" ;you can disable this line bu putting ; sign at the beggining loading_bmp="loading.bmp" ;you can disable this line bu putting ; sign at the beggining
Hoppe this will help you!

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Faulty Sat Nav

Have you tried resetting the unit? if not try this as it solves many problems

Dec 31, 2009 | GPS

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I have a SVP gps system and I need to update it...can you help? Candice

Dear redstargirl2:

If you show me the structure of the SD card with pre-loaded map, like the names of all folders and files, perhaps I can help you out.


Dec 07, 2009 | SVP GPS-350 Car GPS Receiver

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Garmin Nuvi 205 keeps saying no maps available ???

This is easy. You have to run your software, select the maps tap and then transfer maps to the device. Chances are good you uploaded a 2009 map on top of the 2008 map. The updater doesn't delete maps.

Your unl file only has one key, you have two maps loaded. Simple go into the garmin directory and delete the map file and the mapsupp file. You can easily find them because they are greater than 500 mb.

Then run mapinstall (google for the file). This will install your most current map to the Nuvi. You are back in business.

Dec 13, 2008 | Garmin nuvi 205 GPS Receiver

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