bootloader 1.0100 - You should never try to upgrade this bootloader or else you will brick your device!
Navcore 8.041 is a special navcore that is needed for your particular model and cannot be upgraded.
If you have a Tomtom with the bootloader version number 1.0100 or 1.0200 you have a special system and should never attempt to change your bootloader!
It is most likely that you have a special Navcore version as well - 8.041
Other Navcores won't work on your device the progress bar will stop at the end and the devices freezes.
The only way to use non genuine maps on these devices is by using a specially patched PNDNavigator for for the 8.041 Navcore.
Don't try to patch the ttsystem or the PNDNavigator file yourself. It won't work and the ttsystem does not need any patching.
So basically, you're stuck with this navcore and bootloader. This also means you cannot use the full featured IQ/ALG maps.
Google navcore 8.041 bootloader 1.0100 for more information.
Here is a link to the PNDNavigator for navcore 8.041:
I haven't tested it, but this is the only download I could find.