When the TomTom navigation software is bad (corrupted, error) an X is shown on the screen ...
You'll want to try to recover the software from your backup (that you have made on your computer).
Otherwise, you'll need to connect your device to the HOME (or MyDrive Connect) software (on your computer/laptop) to see if you can re-install the software.
SOURCE: No GPS Signal in TomTom One XL all of a sudden
I suddenly lost the GPS signal today and could not get it back. All I got was the "No valid GPS signal". My solution was to tap on the GPS satellite bars when in the route map. this brought up the "Status summary page of the TOMTOM.
I then again tapped the satellite bar which brought up the "GPS Status" page. I then tapped the bar labeled "configure".
The radio button next to the option titled "Minutes (dm.m') was selected. I then moved the selection to "Degrees (d.d) and it started working.
I had just downloaded the GPS fix 5 days ago so it is not like this suddenly caused it to stop working.
This may not work for everyone but this is what it took to get mine working.
Cheers
SOURCE: tomtom stuck on waiting for valid GPS signal for 3 days
u need to up date gps if that dose'nt work sounds like it needs to be repaired i had same problem and found its better to buy new on then pay 275.00 to repair due the math
SOURCE: Tomtom not finding gps satellites
i had exactly the same problem, i dont really know how i solved it but first i thought it could be a memory problem slowing the gps signel so i reset the tom tom to factory settings then downloaded the updates from the tom tom home program of corce i lost all my destinations but i didnt want to do a back up just incase one of the updates had a virus or something so if u want to keep them i sugest u write them down first.and then i got a safty pin and pressed the reset button underneath where the memory card goes twice the second time i held it down for about 10 seconds then i looked for updates again from tom tom home. after that in tom tom home there is an option where u can operate your tom tom on your pc so i tryed that and i put in a destination on the pc and clicked on demo tour so i watched the route first it was a bit slow but started to speed up a little. after it had finished i un plugged the sat nav and went for a walk with it around the house soon as i went out side and set a destination it found 6 gps signels,make sure yhe battery is charged to at least half. well i hope anyone who follows my steps gets the same results, thought i lost 200 quid cos i have had it over two years and its only guarenteed for 12 months. well good luck.
SOURCE: waiting for valid gps signal
Go to TomTom Home on your computer and do a update for your unit. In the update list you should see a GPS quick fix which helps the TomTom's aquire a signal faster. Hope this helps.
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