HOW to install Tomtom on SPEEGO device?

Hi to all,
I have this old device, AvMap Speego (by Liteon)
http://www.tecnozoom.it/navigatori-satellitari-gps/avmap-speego.html

- Windows CE NET 5.0
- CPU Centrality 300 Mhz, Atlas II Dual Core with GPS-V3, 22 channels
- display TFT 3,5" - 320x240 pixel, 16,7 millions colors
- integrated flash ROM memory 512MB
- 64MB SDRAM
- SD card slot
- USB 2.0
- MP3 player

There is a way to:
- delete the old navigator and replace it with a tomtom version?
(here is a link that show this is possible to install tomtom igo primo navigon sygic destinator miomap):
https://www.youtube.com/watch?v=J57kNY79zqI

...Or...

- delete ALL (navigator and Windows 5 system) and create a Tomtom only device like other standalone navigators?
That it will be better choice... transform the PDA in a PNA!

Which version and how to install it?
THANKS!!!

This is what I see when connected to pc through USB cable:


This is what inside the folder H: