Computer program product that includes a firmware structure, and booting method for a control system

A computer program product embodied on a non-transitory computer readable medium of a control system includes a firmware program file, a signature detection module that causes a processor to detect whether a pre-defined signature is present; a booting module that causes the processor to perform, after it is determined that the pre-defined signature is not present in the main block, operations of power management and pin initiation included in the booting sequence; and a flashing module that causes the processor to perform, in response to receipt of a flashing command, a flashing operation that includes overwriting the firmware program file with an update firmware program file.