Please give me some more details.
What are the frist 2 digits of the serial number (see on bottom)?
How big is the internal memory and can you put a SD card in it?
What navcore do you use?
Do you use a self activated map and, if yes, did you patch your navcore?

Sometimes this happens if you have a new map and you put the old mapsetting.cfg file in it. So try to take that temporarily out the map folder and se what happens.

Peter

What map do you use? How full is your memory, I how much is still free?
If there is to little free memory, you should try an other smaller map.

You could try a clearflash to clear your flash memory. You find it

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It is also interesting to try other navcore's, Search over

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Did you search for other threads about problems with TT ONE's in this forum?

Peter

The last option I know, try to download the map from a other location.
Maybe it is corrupt.

Or try an other map. As a start Benelux (very small)
Europe_zone_3 is also interesting (quite big but you can delete some files)

Peter

I am sorry to hear that. I can only ask you again;
Did you search for other threads about problems with TT ONE's in this forum?

Peter

@frak123: Your XL IQ Routes (GL) should get the latest NC 9.541 (customized for your device) from TT (64 MB device). At first do "ClearFlash" like suggested, 3 times at minimum. Then make a backup of your XL IQ Routes (with a file-explorer, not TT-Home!). After that delete all files and folders on your device without the file "ttgo.bif". Connect your XL IQ Routes with TT-Home and let install NC 9.541. Patch this new NC, add missing folders like LoquendoTTS, sounds, voices and a activatible map to your XL IQ Routes. Activate the map. Suggested for downloading and activating maps and patching NC without errors is the tool TTActivator.