Carminat TomTom update issue on Laguna 3 (2013)

Hello everyone,

I just own a 2013 Renault Laguna 3 with the built-in Carminat TomTom system.
I just want to update the map, but I’m running into some problems with the tools I tried:

With FastActivate, I get a message saying: “ttgo.bif or ttnavigator.bif not found”.
With TTActivator, it doesn’t detect my SD card at all.

At the moment, I can’t get any further.
Can anyone familiar with the Carminat TomTom explain what I should do, or if there’s an official/simple way to update my SD card?

Thanks in advance for your advice,
Have a nice day.

PS : here's "ls" :
art photos
autoplay.exe raster
autorun.inf sounds
ephem splashw.bmp
France statdata
home images System Volume Information
install Thumbs.db
Install TomTom HOME Mac.dmg TomTom HOME Install.app
Install TomTom HOME.exe TomTom-Cfg
Latest-FastActivate tomtom.ico
licences VAutoTTS
loopdir voices
LoquendoTTS