Rod KM6SN has put together a comprehensive manual for Ian KD8CEC’s firmware. KD8CEC firmware (version 1.061 current) runs on a standard factory µBITx. No mods are required. There are significant improvements to the user interface and to functionality. An upgrade from Ashhar Farhan VU2ESE factory firmware is recommended to address firmware bugs and add new functionality (memories, CAT control, IF shift, etc.).
Download Rod’s manual here: KD8CEC manual v1.061