If you have a Tomtom with the bootloader version number starting with 1.xxx instead of 5.xxx you have a special system and should never attempt to change your bootloader! (exception: bootloader 1.0012 is OK for updating.)
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 end the devices freezes.
The only way to ...