[Marsu_mad]

For MMMI 3G High 6.24.2 maps follow this steps
1. Run SCRIPT FSC Removal (to remove the old activation keys)
2. Install firmware HNav_EU_K0257_6_D1
3. Install 6.24.2 maps ( better is to delele the old maps from green menu)
4. Run the script for activation key ( when you see the message... Script applied.Pres any key and eject the sdcard....is important to press any key and eject the sdcard.... after this reboot the MMI)

1. OK. Installed
2. OK. Installed
3. I can not install it over the existing one (it does not activate start download) How to delete the map with the green menu? I have access to the green menu but I do not know how to delete the map.

With the first two steps, I tried again to install the activator but it tells me again that it is already installed.

You must enter green menu and delete maps.
Then you can install new maps again and activator.
See how can enter green menu in first post