Can this tool bring us closer to cracking the new devices?It is not a new tool! This tool already exists since May 2011 with aerlier beta versions.
TomTom Content Transfer Assistant v1.0.1
 Tomtom has a "ContentTransferAssistant" that transfers stuff from the
 PC's harddisk onto a via/800/1000/etc, it's a standalone application.
 -The following TomTom navigation devices are supported:
 From old device: GO x50, GO x40, GO x30, GO x20, GOx10, GO classic
                  XXL, XL, Start, ONE, Rider   
 To new device  : GO LIVE 1000 series, GO LIVE 800 series, Via LIVE series 
 -You can transfer the following items:
 •Favourites
 •POI sets created by the community
 •POI sets created by you on your device
 •Community voices
 •Warning sounds
 •Start-up images
 •Shut-down images
 •Car symbols
 •Map colours 
 -You may need to enable the transferred content on your new navigation device. 
 To enable your content, go to the following menus:
 •Favourites, In the Main Menu, tap Settings > Manage Favourites.
 •POI sets, In the Main Menu, tap Settings > Manage POIs.
 •Community voices, In the Main Menu, tap Settings > Voices.
 •Start-up and shut-down images, In the Main Menu, tap Settings > Start-up settings.
 •Car symbols, In the Main Menu, tap Settings > Car symbol.
 •Map colours, In the Main Menu, tap Settings > Change map colours
 - The following navigation devices connect to MyTomTom: GO 1000 series, GO LIVE 800 
   Via series, Start 20 series, Blue&Me TomTom 2 LIVE, Sony XNV, TomTom Connect 
[Please Register or Login to download file]  It copies files from a 'old' model onto the PC's harddisk and then to the 'new' device.  
 On a Windows-7 system, files on harddisk are tempararily stored in:
 c:\users\userid\appdata\local\temp\TTDTM
 If anyone could do some reverse engineering on this "exe", this might give an idea 
 on how to access the new models.
You can fool this program.
 -Example: put stuff on a 825
 Insert an sd card with a 9.xx navcore on it, fooling the "exe" thinking it's a Tomtom.
 When asking to connect the 825, go and edit the "temp" stored file and add the files 
 that want to be transferred. It works like a charm . . . . .  
[Please Register or Login to download file]