Holden GM IQ sat nav update advice

Hi all, im wondering if anyone would be able to give me some advice on updating the maps on a factory Holden IQ sat nav, the system uses an sd card and runs on win ce 5 but the files on the sd card are different to aftermarket sat nav, ie there is no .exe that i can find on the holden card.

thank you

ps is there a way to upload the data off the card here?

The latest map update for the iq system is 2016. I have this if you require it. Has to be installed on a normal sd card, the unit will not register a micro sd