Technologies for updating firmware in a pre-boot environment include a mobile computing device having a firmware environment and an operating system. In the pre-boot environment, the mobile computing device extracts a firmware update from a capsule previously generated by the operating system and determines a power consumption setting for a hardware component as a function of the firmware update. The mobile computing device configures the hardware component based on the power consumption setting and applies the firmware update in response to configuring the hardware component. The firmware update may include a firmware driver executable in the firmware environment. The hardware component may include a peripheral device or a device controller of the mobile computing device. The mobile computing device may determine a power policy as a function of the firmware update, and determine the power consumption setting as a function of the power policy. Other embodiments are described and claimed.