Originally Posted by Rgregorio777
So i can use the USB update then? Thanks guys for the information. That helped.
My 328i's build date is 9/2009 and it required the firmware update before maps could be updated from 2009 to 2012. Like others have stated, if you are unsure if you have the latest firmware load the maps onto a USB drive, plug it into the USB port in the glovebox and see if it asks if you want to update. If it does then you are good to go, just need to get the FSC code. If it doesn't then you will possibly need the firmware update and will need to go to the dealer. If you still have 2009 maps then chances are you will need the firmware update.