Propeller P8X32A Application Note AN007. There are times when it is extremely convenient to load a new version of firmware without having to be physically present at the device. This article describes one method of loading an application image into the Propeller chip’s main RAM or EEPROM using XBee wireless transceivers. Once the system is set up and primed, the resulting operation is similar to in system programming (ISP) with the added benefit of wireless serial communication of user data. Illustrations describe the operation of this loader in detail, and step-by-step instructions show how to connect an XBee transceiver to a project and program it wirelessly.