Tomtom Go920 device is not recognized by computer

Find out which TomTom software works with your device (TomTom Home or MyDrive Connect), download it and install it on the computer. Connect the device to the computer. It should be recognized by the TomTom software. For TomTom Home, find the Update my TomTom and follow instructions. For MyDriveConnect create an account with TomTom and associate the device with the account. Once logged you will see what you are entitled to. If you do not see MapUpdate you are not entitled to free updates and you will have to buy the new maps.

The moment you connect your TomTom device to a computer, your device should ask Do you want to connect to 'computer'. Once you tap YES, it should connect to the computer. TomTom HOME then starts.

If your device is not connecting, click one of the solutions below:

• Device not responding
  You connect your device to your computer but the device does not ask if you want to connect.
  
  
• Device not recognized by HOME
  TomTom HOME does not start or does not recognize your device.
  
  
• Device not recognized by computer
  Your device does not appear in My Computer (Windows) or on the desktop (Macintosh).
  

for all map downloads you can use tomtom home which will show you all available downloads for your unit

Try recharging the battery in the car, and also at home with the USB cable.
If you see that it does not hold charge in both case, then you may conclude that the battery is defective. You should compare the TomTom claims with the actual result.

If battery is defective, you should be able tp replace it. Go to the TomTom onlibe store.

Does your Win7 computer recognize any USB devices? If not, this is a device problem.

There could be a problem with the cord. You may need to replace it.

First thing I'd do is download and install the latest version of Tom Tom Home.

Get it here: http://www.tomtom.com/services/service.php?id=16&tab=87

Let us know if any of this works.

the other users who faced the same error tried this instructions and solved the problem as follows:-- We have a result!
After calling the helpline to find it was number unobtainable! I returned the unit to Halfords who called another helpline number. They took my e-mail address and when I returned home an e-mail was waiting with the following instructions which worked.
I now have a fully functioning TomTom! Thanks for the advice fellas:

Thank you for contacting TomTom Customer Support.

In this email you will find the solution for the error on your TomTom. 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.

The tt 920 does not have a reset hole. To reset the 20 series models press and hold the on/off switch ffor at least 20 seconds.

TomTom software version 8.3 has a voice stuttering problem. Call TomTom support for a link to the previous version of software Ver 7.41. You can then overwrite the newer 8.3 version and use 7.41 while waiting for TomTom to re-write newer software.

First thing to do, reset:
http://www.tomtom.com/support/index.php?Language=1&query=reset&FID=6965

Try power on after reset, hold power on for several seconds.

If Red Cross issue after reset:
http://www.tomtom.com/support/index.php?Language=1&query=red+cross&FID=1898

Well, according to THIS, the Blackberry 8100 can only be used for hands free calling with a Go920...

That said, it shlould be possible to establish a connection between the two...

Let the Go find the phone, not other way around...
It can take a LONG time searching for the phone, and it may not be able to establish a connection automatically..

If so, try to set it up manually, it will ask for that if it fails...