Tomtom510 when i turn on my tomtom 510 it wants me to install the sd memory card when i do that it shows the card to be pulled out with a big red cross on it please help

If your TomTom shows a red cross, it means the device is not able to load the software to be able to operate. Some devices have this software on a SD-card, some have it stored on an internal memory.
If there was a SD-card in your TomTom, I would suggest to put it back. If there is a empty SD-slot on your device, it could be you lost your SD-card, but some TomTom devices have an internal memory AND a SD-slot for memory extension, so if you have an empty cardslot it doesn't necessarily mean there has to be a card in it.

When you never saw a SD-card, probably some data went corrupt on the internal memory. When you have a SD-card, probably some data got corrupted on the SD-card.

To repair the software, you need to connect your GPS to your PC or Mac with a USB cable.
You also need the program TomTom HOME. You can download it for free on the TomTom website.
With TomTom HOME you can update the operating system of your device for free (map updates are nor free).

Try updating, and see if your device works again.

If this doesn't work, post it here.

This problem is due to the memory card not containing the TomTom application or map. To update the application onto the memory card, Connect the device to your computer. Open the TomTom Home application. Click on 'Update My Device'. This should then install the application onto the SD card. Alternativly, you could perform all the steps above without the SD card in the device, this will install the application onto the internal memory. Note: you may also need to install your maps, voices, etc after you updat.

This problem is due to the memory card not containing the TomTom application or map. To update the application onto the memory card, Connect the device to your computer. Open the TomTom Home application. Click on 'Update My Device'. This should then install the application onto the SD card. Alternativly, you could perform all the steps above without the SD card in the device, this will install the application onto the internal memory. Note: you may also need to install your maps, voices, etc after you update.

http://www.tomtom.com/support/index.php?Language=1&query=red+cross&FID=1898

no that will not work see pullin the sd card out of the tomtom kinda pisses off the application if u have the red x error first do the soft reset if that does not work then update ur tomtom an application should pull thru as a download if not dont fret on tomtom home go to show contents on my one then delete just the application and i mean just the application then go back and hit update my one it will download and install new app and boom baby all done

I deleted TomTom Home from my computer. I downloaded a version of Home just for Mac OS 10.4 users and rebooted. Then I followed the directions and it downloaded all of my maps, etc to the original TT SD card. I also set up my cell phone with a bluetooth connection.

Didn't need to reformat the new SD card I had bought because the original card had enough room for everything.

Thank you for asking.

Hello premji,

Map updates for the TomTom brand GPS devices are available through the manufacturer's website at: http://www.tomtom.com/products/maps/index.php?Lid=4.

Best Regards
Ken
"Go Ahead. Use Us."

tomtom are wank!!!!!!!!!!!!!!!!!!1

I did find out how to solve the problem. I can't remember exactly where I found the solution but I think it was on TOMTOM website. You have to connect to TOMTOM home and reinstall the application. I put the TOMTOM disc in the computer (which came with purchase) and reinstalled the program. Which I thought was weird as everything appeard to be fine with TOMTOM home). Anyway, it worked. Good luck.

Try the clear flash utility. It worked for me. Martin