[8125, K-JAM, P4300, MDA Vario General] FOZZER:
I used this guide and got Tomtom 5 working a treat hope this helps :D

Surefire method of installing TomTom Navigator on your K-JAM

This post is in no offense to anyone who has previously posted a quick tutorial or a quick-and-dirty method of installing TomTom Navigator 5.10 on the K-JAM (or Windows Mobile 5.0 for that matter), but there has been a lot of inconsistencies with where files are to be placed, how things should be installed and in what order, and if some steps need to be performed or not. In addition, the fact that it's likely coming from people who don't have English as a first language, it makes it very hard to follow otherwise simple directions on how to get this program properly installed and running on one's K-JAM.

Thus, I have detailed a step-by-step procedure based on completely on firsthand experience, and repeated for verification. It requires your K-JAM (obviously), your ActiveSync'ed desktop, your Bluetooth GPS device, and the original CAB/voice/map files. What is important in my method is that I did NOT have to perform any install of 5.00, followed by 5.10, and I did not have to perform any registry changes to enable the GPS applet in Windows Mobile 5.0, either.

Please keep in mind that TomTom Navigator 5.10 is not officially compatible with Windows Mobile 5.0, so you are not likely to get any support on the product on this OS.

Download the latest version of the TomTom Navigator application from their website.

Install the map files onto your mini-SD card. It should be placed right at the root, and will have a path on your K-JAM, such as:

\Storage Card\New-England_and_Mid-Atlantic-Map

Power on your Bluetooth GPS, and prepare it for pairing, if necessary.

Go to your Comm Manager and enable the Bluetooth radio on K-JAM and pair your Bluetooth GPS to it.

Once properly paired, put a check next to Serial Port as the device's available service.

Minimize the on-screen keyboard, if necessary, and click on the next tab labeled COM Ports.

Click New Outgoing Port and select COM6, while leaving Secured Connection still checked. Your device should now be listed with (COM6) next to it.

Install all the CAB files in the following order:

GPS.CAB - the conduit between TomTom and your Bluetooth COM port

PIMAddIn.CAB - the conduit between TomTom and your Outlook contacts

WZD.CAB - the Today plug-in (completely optional)

TTN.CAB - the actual application and data files

If you are getting any issues with installing any of the CAB files, try soft-resetting and launch the same CAB file again.

On your desktop, launch Notepad.

Type & \Storage Card\New-England_and_Mid-Atlantic-Map\ or whatever the name of your main map folder is on your mini-SD card. Do not forget to add the final backslash and a have a space between the ampersand and the first backslash.

Save the file as CurrentMap.dat. Make sure it doesn't end up as CurrentMap.dat.txt!

Create a folder on your K-JAM called \My Documents\TomTom.

Copy your newly created CurrentMap.dat file from your desktop into \My Documents\TomTom on your K-JAM.

Create a folder on your K-JAM called \TomTom\TomTom. Yes, strangely enough, that is a TomTom folder under the TomTom folder on the root of the device.

Copy your (celebrity or standard) voice files into the \TomTom\TomTom folder.

Soft-reset your K-JAM to allow the Today plug-in to show up and the TomTom Navigator icon to appear in the Start Menu. If the Today plug-in doesn't show up, it's likely that it's simply disabled in the Today plug-ins list, and you can enable it later.

Launch TomTom Navigator.

Set up your preferences (left/right-hand, time format, voice, etc.)

Your map should now be automatically selected and loaded, based on steps 9-13.

Activate your map through the normal registration methods.

Configure your Bluetooth device as Other Bluetooth GPS and select COM6: as your port.

Confirm that your Bluetooth device is working by clicking on the GPS signal strength indicator on the bottom-right of the screen, then the same indicator on the right on the following screen.

That's it! Enjoy your TomTom Navigator on your K-JAM!

Credits:

http://xdaforums.com/viewtopic.php?t=28386

http://www.howardforums.com/showthread.php?t=742385

http://xdaforums.com/viewtopic.php?t=27641

http://xdaforums.com/viewtopic.php?p=160768

I hope this step-tested, detailed tutorial will be the end-all solution for everyone having issues in getting TomTom up and running on their K-JAMs, as I've been sharing the pain with everyone trying to get some sort of navigation software working on Windows Mobile 5.0. Now, you can take a breather and go travel somewhere with your new toy and not have to worry about surfing to MapQuest.com on an EDGE connection in the middle of nowhere.

By the way, my Bluetooth GPS device is the GlobalSat BT-338 GPS, a SiRF III device that can be picked up real cheap from MadMonkeyBoy. There is a firmware update to 3.1.1 available here.

NOTE: If you've tried the other methods posted elsewhere that instruct you to enable the GPS applet by modifying the registry and so forth, you can either hard reset your device and follow my step-by-step method above, or reverse their work by performing the following steps:

Go to the GPS applet under Settings.

Change both the GPS communication and hardware COM ports setting back to None.

Go to the last tab and uncheck "Manage GPS Automatically."

Lastly, disable the applet entirely by adding the Redirect null string value back to that GPS Settings key in the registry. (See those previous instructions to find the exact location in the registry and simply put back the entry you deleted or changed.)

Soft-reset your K-JAM for changes to take effect.

Remember, TomTom Navigator 5.10 is NOT designed for Windows Mobile 5.0 natively, so you can't expect the OS to manage something that older navigation software is not expecting the OS to.

Finally, if for whatever reason you're not able to communicate with your Bluetooth GPS properly because you're working from a failed install from previous instructions, try to delete the Outgoing COM Port entry, followed by the entire partnership between your K-JAM and the GPS device, then start again.

UPDATE: I have removed the link to the TomTom Navigator installer CAB files. You can visit www.tomtom.com and download it from there. Also, you can install the voices to the \Voices or \Storage Card\Voices folder.