A local area wireless communications network includes an MCU which generally operates to manage the placement of audio and other information into frames that are transmitted to a base station which serves to convert the frames from one signal format to another signal format and broadcast the frames over a wireless medium to associated mobile communications devices. The wireless communications system operates in a way that permits the broadcasting of new software files from the base stations to associated mobile communications devices in a parallel manner without having a detrimental affect on the operation of the communications system. The MCU operates to place download alert information and download payload information into the frames in such a format and into certain positions in the frame that this information can be recognized and stored by the mobile phones which use it to update their current software.