A method and system for identifying compatibility between firmware images. The method for identifying compatibility between firmware images includes analyzing a control block of each of the firmware images, where each of the control blocks includes a firmware family code and a compatibility table of a firmware image associated with the control block. Next, the method determines if the firmware family codes of the firmware images are the same and whether any of the compatibility table entries pertain to either firmware image. Generally, if the firmware family codes are the same, the firmware images are considered compatible, however, if the firmware family codes are different, the firmware images are considered to be incompatible, unless a compatibility table entry indicates otherwise.