I am keen to find this too (well, the whole update) and I know it's out there somewhere I have seen recently on ebay there are some Audi-converted MHI2's that are on version 1418. (there is very likely not an actual update) I'm not sure if there is a an actual update or if you can dump the firmware off of one that came from the factory with 1418 and apply it to an older one. Maybe someone can shed some light.. Are you looking to update yours as well or are you having an issue?