Abstract: A method, system, and computer program for concurrent in-application programming of programmable devices, such as microcontrollers, provides the capability to concurrently program multiple programmable devices that are installed in systems. A method for programming programmable devices in a system comprises determining a status of a first plurality of programmable devices, the status including information relating to program code in each programmable device, determining a subset of the plurality of programmable devices that is to be programmed, based on the information relating to program code in each programmable device; where in the subset includes a second plurality of the programmable devices, programming the second plurality of programmable devices concurrently, and determining a status of the second plurality of programmable devices, the status including information relating to success of concurrent programming of each programmable device.