The DHB-10 firmware is expected to evolve with updates from Parallax and the open source community. Here is how to update your DHB-10’s firmware to the latest.
Links
[1] https://www.parallax.com/downloads/dhb-10-motor-controller-firmware
[2] https://www.parallax.com/downloads/propeller-tool-software
[3] https://github.com/parallaxinc/PropellerIDE