Manual BMW software updates for Bluetooth and multimedia compatibility are performed by downloading firmware from the official BMW portal using a VIN and installing it via a FAT32-formatted USB drive. The downloaded file must be placed in the root directory of the drive, after which the update is initiated through the vehicle's "Settings" menu. For more details, visit BMW of Greenwich Bimmerpost What happens if a BMW software update fails? What does the USB software update do? Any other BMWs with similar software update processes?