My tomtom is connecting fine to the computer, but once I get the pop up window saying my device is safe to properly disconnect and I disconnect it and try to turn it on without it being hooked up to the computer, it goes to the screen when it is hooked up to the computer and has a big red circle with a white X in it blinking. What do i do?

Hi, I was having trouble too and have found the manual for the 3rd edition online
http://download.tomtom.com/open/manuals/one3rd/refman/TomTom-ONEv3-en-GB.pdf

I'm following these instructions:

Installing TomTom HOME
Install TomTom HOME on your computer in the following way.

• Connect your computer to the Internet and then connect your TomTom ONE to your computer using the USB cable.
• A pop-up window appears. Select Run TomTom HOME. Click OK and follow the on-screen instructions.
• If the pop-up window does not appear, browse to the TomTom device on your computer and run the file named Install TomTom HOME.
• TomTom HOME is also available for download from the TomTom website.
• For more information visit www.tomtom.com/home
• Once installed, TomTom HOME will start automatically whenever you connectyour TomTom to your computer.

Hope this helps, Lynsey

Since you have said that your TomTom is only displaying a flashing cross (or "X"), it is because the TomTom application is not installed or can not be found. This usually happenes when you attempt to update your unit and it is interrupted (i.e., not properly disconnected from the computer, the TomTom was underpowered by using a USB port on your monitor/keyboard, or lost power during the update. In fact, it might just be pissy.)

Down to how to fix it: You essentially just need to reinstall the application.

1. Soft reset (I know you have already done this but am providing a link just in case: http://uk.support.tomtom.com/cgi-bin/tomtom_uk.cfg/php/enduser/popup_adp.php?&p_faqid=6965)

2. Connect you’re GPS unit to your computer

3. Press the power button for about 5 seconds and the TomTom Home will start.

NOTE: It is highly recommended that you use TomTom HOME to make a backup. You can find out how to do this here: http://uk.support.tomtom.com/cgi-bin/tomtom_uk.cfg/php/enduser/std_adp.php?p_faqid=3171&Lid=1

4. Delete application files (so we can do a clean install), to do this:
- in HOME, click "MANAGE MY NAVIGATION DEVICE"
- Select the ITEMS ON DEVICE tab and tick the box by "APPLICATIONS".
- Then click REMOVE ITEMS FROM DEVICE
- A warning will pop-up, click "OK"
- Select the ITEMS ON COMPUTER tab and tick the box by APPLICATIONS
- Then click REMOVE ITEMS FROM COMPUTER
- Another warning will pop-up, click "OK"

5. Reinstall the TomTom Application by clicking UPDATE MY DEVICE
- Then click UPDATE AND INSTALL
- Once done, click DEVICE > DISCONNECT DEVICE

6. Next, we're going to run the TomTom Clear Flash Tool (the downloads include step-by-step directions for clearing the flash)
- for windows: http://www.tomtom.com/updates/clear_flash/clear_flash.exe
- for mac: http://www.tomtom.com/updates/clear_flash/clear_flash.dmg

7. Safely disconnect.
- on windows: click the SAFELY REMOVE HARDWARE ICON (a icon with a green arrow that is hanging out in the system tray and then choose "USB MASS STORAGE DEVICE" from the pop-up
-on a mac: drag the desktop icon of your device to your trash.

8. Your device should start up automatically. If it hasn't within 10-15 seconds, press the on/off button.

You're done!
If by chance this still doesn’t work, you can try formatting the internal memory or memory card of your TomTom. If you need a link or directions, simply send me a message or reply!

Hope this helps!
-TJ

Since you have said that your TomTom is only displaying a flashing cross (or "X"), it is because the TomTom application is not installed or can not be found. This usually happenes when you attempt to update your unit and it is interrupted (i.e., not properly disconnected from the computer, the TomTom was underpowered by using a USB port on your monitor/keyboard, or lost power during the update. In fact, it might just be pissy.)

Down to how to fix it: You essentially just need to reinstall the application.

1. Soft reset (I know you have already done this but am providing a link just in case: http://uk.support.tomtom.com/cgi-bin/tomtom_uk.cfg/php/enduser/popup_adp.php?&p_faqid=6965)

2. Connect you’re GPS unit to your computer

3. Press the power button for about 5 seconds and the TomTom Home will start.

NOTE: It is highly recommended that you use TomTom HOME to make a backup. You can find out how to do this here: http://uk.support.tomtom.com/cgi-bin/tomtom_uk.cfg/php/enduser/std_adp.php?p_faqid=3171&Lid=1

4. Delete application files (so we can do a clean install), to do this:
- in HOME, click "MANAGE MY NAVIGATION DEVICE"
- Select the ITEMS ON DEVICE tab and tick the box by "APPLICATIONS".
- Then click REMOVE ITEMS FROM DEVICE
- A warning will pop-up, click "OK"
- Select the ITEMS ON COMPUTER tab and tick the box by APPLICATIONS
- Then click REMOVE ITEMS FROM COMPUTER
- Another warning will pop-up, click "OK"

5. Reinstall the TomTom Application by clicking UPDATE MY DEVICE
- Then click UPDATE AND INSTALL
- Once done, click DEVICE > DISCONNECT DEVICE

6. Next, we're going to run the TomTom Clear Flash Tool (the downloads include step-by-step directions for clearing the flash)
- for windows: http://www.tomtom.com/updates/clear_flash/clear_flash.exe
- for mac: http://www.tomtom.com/updates/clear_flash/clear_flash.dmg

7. Safely disconnect.
- on windows: click the SAFELY REMOVE HARDWARE ICON (a icon with a green arrow that is hanging out in the system tray and then choose "USB MASS STORAGE DEVICE" from the pop-up
-on a mac: drag the desktop icon of your device to your trash.

8. Your device should start up automatically. If it hasn't within 10-15 seconds, press the on/off button.

You're done!
If by chance this still doesn’t work, you can try formatting the internal memory or memory card of your TomTom. If you need a link or directions, simply send me a message or reply!

Hope this helps!
-TJ

This is not a solution, it is a new problem
my tomtom was working fine until I connected it to my computer using the latest TomTom Home. It now flashes a white cross and TomTom Home says "No device connected". My TomTom is useless now and does not work anymore.

This solution can be used in the following situations:

• The device hangs in the start screen (splash screen )
• An SD-card with a red cross is displayed on the screen
• A picture with a red dot and white cross is displayed
• The device can’t be turned off

If you haven't already done so, please download and Install TomTom Home from http://www.tomtom.com/7602

If you don’t have a full backup of your TomTom yet we advise you to make one before continuing with the steps in this email. You can make a backup by following the steps below:

1. Reset your TomTom device: http://www.tomtom.com/6965 and connect it to your computer.
2. Click on 'Backup and Restore -> Backup' in TomTom Home 2.0
3. Enter a name for the backup and click [OK]
• IMPORTANT: When the software is asking to delete parts from the backup click [NO]

After the backup is made you delete the files from the root directory of the TomTom. Follow the steps below to do this:

1. Reset your TomTom device: http://www.tomtom.com/6965 and connect it to your computer.
2. Open My Computer in Windows, or Finder in Macintosh from your desktop and turn on your TomTom device.
3. On your screen a new removable disk appears, this is your TomTom device, click on the disk to open it.
4. You will see a list of folders and a list of loose files
5. Delete all of the loose files. IMPORTANT: The folders with their content must NOT be deleted.
5. Close the window when all files are deleted by clicking on the [x].

Next we will reinstall the application via TomTom HOME.

1. Start TomTom HOME on your computer
• TomTom Home should automatically check for updates and prompt you to install them, if not:-
2. Click on 'Update my device'. If you get the message 'No Items Available', or there is not an application to download, click on 'Add Maps, Traffic, Voices etc -> Items on my computer', select the application and click on 'Add'.
3. Select the Application update.
4. Click on 'Device -> Disconnect Device', then turn off your device when it is done installing and disconnect it from your computer.
5. On a PC, in the System Tray by the computer clock, click on the 'Safely Remove Hardware' icon and disconnect the TomTom also in this way.

When switching on the device it should boot as normal again.

hi ! I had the same problem. My TOMTOM version was too old to connect to the new TOMTOM 'Home' software . Contact TOMTOM support and they will give you a link to the older version of TOMTOM Home where you can update your TOMTOM version which will then be able to connect to the newer version on Home , and then link ok to your computer.
Best of luck !

Hi all,
I got the following response to this little problem. Will try it out and hopefully my 520 will work again soon.

To ensure that your device is correctly connected to your PC, please do the following:-

STEP 1 Run the Registry Cleaner Tool

• Disconnect the TomTom and remove any USB devices from your PC, If you use a USB Hub, please disconnect that also.
• Run the RemoveRegEntries tool. You can download it from :-http://tomtom.com/lib/img/cs/S4S/files/RemoveRegEntries_TTGOv1.exe
A Black window will appear briefly then close.
• Make sure that you have got Administrator rights on the PC. Otherwise you may not be allowed to connect new hardware (especially the case when using office computers)
• Reboot your PC

STEP 2 Connect the TomTom

• Make sure the device is fully charged before connecting it to the computer. Ideally a mininum of 4 hours charge.
• Reset the device using a paper clip (see http://www.tomtom.com/6965). When resetting, keep the reset button pushed in for at least 20 seconds, but DO NOT turn the device back on just yet.
• Ensure that your TomTom has power connected to it. There should be a green light on the TomTom unit. If your device came with a Home Charger, please make sure that is plugged in to the TomTom also.
• Connect the TomTom to a USB port on the back of your PC. We strongly suggest that you use a USB 2.0 port and not a USB 1.1 Port. (USB 2.0 ports are faster USB ports, which are standard on all modern PC's, older PC's and some laptops may still use USB 1.1 ports which are slower and can prevent some USB devices from connecting properly).

STEP 3 Switch the TomTom On.

• On your PC, open My Computer
• Now switch the TomTom On while it is connected to the PC with the green light on.
• Look at My Computer, do any disk drives appear as you switch the TomTom On? If so, which drive letter is it?
• Double click on the TomTom disk.
• What files and yellow folders do you see?, please make a note of them and reply back with what files and yellow folders you see. If possible, please provide us with a screenshot showing all the details.

If the device is NOT listed as a 'Removable drive' under 'My Computer' when you switch the TomTom On, try the following:-

STEP 4 Check Device Manager

• Disconnect the TomTom from the computer.
• It is likely that you have a Firewall on your PC, in some cases, Firewalls can prevent USB devices from being recognized by the PC. We suggest configuring your Firewall and security settings to allow all USB devices to connect to your PC. Once you have done this, we suggest trying the steps above again.
• Go to 'Start' and right-click on 'My Computer' and select 'Properties'
• Select the 'Hardware' tab
• Expand 'Disk drives'. If the TomTom device is shown there with a red cross, right-click on it and select 'Enable'
• Check under 'My Computer' to see if the device now shows up as a 'Removable drive'.

We also suggest it is a good idea to try to connect your TomTom to another PC to see if you get the same problem.

Hook the Tomtom using the USB cable to your computer. You should see the Tomtom drive under My Computer as a drive letter.

Backup all data from the Tomtom to a folder on your computer. Now select the Tomtom drive and right click, select properties, select tools, and then Check now. Allow the computer to fix any problems with the Tomtom drive. Once this is completed. Remove the USB cable and do a reset. Now turn on your Tomtom and it should work.

If TomTom Home isn't installed on the computer, you can go to http://www.tomtom.com/home to download the latest version. You'll be walked step-by-step through the downloading and installation procedures. Once that's installed on your computer, you may continue. - Plug the home charger into the wall and into the home dock - Plug the home dock into the computer through a USB port - Put the unit on the home dock, but keep it turned off - Go to http://www.tomtom.com/4987 - Scroll down to the first download choice "Window Update" - Turn your unit on - Run the file May 06 Update, no need to save it, ignore TomTom Home asking you to update - After the program runs, turn the unit off - Disconnect the unit from the mount, turn it back on, and reconnect it - Go to http://www.tomtom.com/6211 - Run the Clear Flash Tool, no need to save it - Open TomTom Home and click 'Download Your Updates' in the first column at the top if it's not there already - There will be a Program Application available for download, say 'OK' - After item is downloaded it will ask you if you want to install the downloaded items, say 'OK' - Using 'Safely Remove Hardware' icon in your toolbar, safely disconnect your GO 910 - You may need to reset the device once or twice (http://www.tomtom.com/7134) - The unit should now boot up with no problems If you have any further questions or comments, please e-mail or call us at 866-486-6866 Monday through Friday, 8:30 AM until 7:00 PM EST. Thanks again for writing. At TomTom we believe in showing you the way the easy way.

Depending on the operating system that you work with, there is a proper way to disconnect your camera from your computer to ensure smooth operation. With Windows 98, you can simply turn your camera off and unplug it. Make sure you are not in the middle of downloading when you disconnect your camera, or you might loose some or all of your pictures. In Windows ME and Windows 2000, you must go to the system tray (on your task bar usually located on the bottom of your screen) and look for the "unplug/eject hardware" icon. Click this "unplug/eject hardware" icon once to pop up a list of devices available for disconnection, then click on your camera's drive. When the computer tells you it is safe to disconnect your device, then simply turn your camera off and unplug it. Windows XP also has an "unplug/eject hardware" system tray icon, which you should use. However, if you are not in the middle of downloading your pictures, it is generally safe to simply turn your camera off and unplug it. On a MacOS computer, you should drag the camera's disk icon to the trash can before turning off or unplugging it.