Program for updating the firmware of ACU-220 and ACU-280 controllers. Also includes current firmware for other ABAX 2 system devices.

To update a controller, it is necessary to connect its RS-232 (TTL) port to the computer (e.g. using a USB-RS converter). Then, the controller can provide over-the-air updates to other ABAX 2 devices operating in the system. These devices will be updated automatically (except for the ASD-250 smoke detector), provided the given release of ABAX 2 Firmware applies to them. The process is running in the background, without disturbing operation of the system.