To accomplish dynamic configuration and code updating of application programs on signal processing module in integrated modular avionics system,and based on current two-level bootloading process,a multi-level bootloading technology for DSP is employed to dynamically configure processing unit on systems commands to store and perform dozens of digital signal processing programs.Currently,the technology has been widely used in a series of avionic electronics equipments and supports stable and reliable dynamic configuration and code updating of application programs.