Abstract: An improved SIM card reader with at least one reader data contact that is connected, typically through a control unit, to a memory, through which reader data contact predetermined software update data may be transmitted for storage in the memory of a mobile telecommunication device. The SIM card reader may be integral to the mobile communication device. In a preferred embodiment, the SIM card reader receives an improved SIM card having a card data contact that cooperatively engages with the reader data contact to electrically couple the reader data contact and the card data contact, thereby to provide a data path through which software update data may be transmitted for storage in the memory of a mobile telecommunication device. The at least one reader data contact may be used to “flash” the memory of a mobile telecommunication device with software updates, for instance.