Systems and methods for operating ambulatory medical devices such as drug delivery devices

A method of operating a pump system wherein the pump includes a microprocessor and a flash memory in electrical communication with the microprocessor, the flash memory storing a boot program and a plurality of application programs, one of the application programs being a predetermined application program, the method comprising the steps of:

• applying power to the microprocessor and the flash memory;
• executing the boot program;
• launching the predetermined execution program;
• and
• executing the predetermined application program, wherein the predetermined execution program controls operation of the pump.

A method of operating a pump system wherein the pump includes a microprocessor, a flash memory in electrical communication with the microprocessor, an additional memory in electrical communication with the microprocessor, the flash memory storing a boot program, the method comprising the steps of:

• applying power to the pump system;
• and
• executing the boot program, the boot program performing the steps of:
• determining whether a remote processor is interfaced to the communication port and configured to transmit data;
• and
• if a remote microprocessor is interfaced to the communication port, downloading the information;
• and
• storing the information.

A method of operating a pump system wherein the pump includes a microprocessor, a flash memory in electrical communication with the microprocessor, and a communication port in electrical communication with the microprocessor, the flash memory storing a boot program, the method comprising the steps of:

• applying power to the pump system;
• and
• executing the boot program, the boot program performing the steps of:
• determining whether a remote system is interfaced with the communication port and whether the remote system is configured to download code for an application program;
• downloading the code for the application program if remote system is interfaced with the communication port and the remote system is configured to download code for an application program;
• and
• storing the code for the application program in the flash memory.