A method for updating system information of a computer device is provided. The computer device includes a baseboard management controller (BMC) and a non-volatile memory. The method includes steps of: a) upon activation of the BMC, determining whether the BMC is in a power on reset (PoR) state, and obtaining current system information that is associated with the computer device; b) when it is determined that the BMC is in the PoR state, determining whether system information stored in the non-volatile memory conforms with the current system information; and c) when the determination made in step b) is negative, storing the current system information in the non-volatile memory.