Please Help MyGUide MG3218 with IGO How ?

Hi,
I have a MYGuide MG3218 that I want to update to IGO however all the data is stored on the internal rom that I have to acces via windows (sync) mobile app

it has a Computer\WindowsCE\ResidentFlash folder with MobileNavigator on it


I have found info of how to install IGO on the MYGuide that uses the SD to store all the data
https://forums.ebuyer.com/showthread.php/11402-125129-MyGuide-3100-Series-Sat-Nav-Unit?p=367295#post367295

however not for this device, it does have the SD slot and I have a SD card though I cant find how to make it boot IGO from the SD rather than the internal ROM

any help appreciated

Thanks
Stef

Update

I believe
https://forums.ebuyer.com/showthread.php/11402-125129-MyGuide-3100-Series-Sat-Nav-Unit/page60
says there should be a shell.ini that says \ResidentFlash\MobileNavigator\MobileNavigator.exe in the Computer\WindowsCE\ResidentFlash folder though if it's there I cant see it I have hidden and system files to visible though it may be to do with having to access it via windows mobile CE

if it was there it would just be a matter of changing it to
\SDMMC\Primo2\Primo2.exe (where I have copied Primo2 to )

help !

nope just found and tried this

When you click on the shortcut to your GPS program by default, runs the file at \SDMMC\MobileNavigator\MobileNavigator.exe [WinCE is not case sensitive].
If you put a shell.ini file at the root of \SDMMC with a pointer to another executable, this will take precedence.

it allowed me to create a shell.ini under \ResidentFlash\ so there is definitely not one there, however it still did not work

Put the shell.ini on the sd card

Thanks ,that did the trick.

even though there's nothing on the SD but the Primo folder and the shell file it works