A system and method of booting a wireless device is disclosed and may include reading a factory test mode memory item when the wireless device is powered on, determining whether the factory test mode memory item is set to yes, and preventing an operating system of the wireless device from booting when the factory test mode memory item is set to yes. The system and method may further include remaining in a boot loader mode, enumerating a port as a diagnostic serial port, and receiving one or more diagnostic packets. Moreover, the system and method may include allowing the operating system of the wireless device to boot when the factory test mode memory item is set to no.