The IO co-processor could not be given its firmware
What ArduPilot says:
- Config Error: Failed to update IO firmware
Pixhawk and Cube boards have a second, small processor (the IO co-processor, IOMCU) that drives the main outputs and reads the safety button. At start-up the main processor compares the IO firmware with the copy it carries; if they differ it writes its copy across. That write failed, so start-up stopped with a “Config Error:”.
What to do, most likely first
The update was interrupted, or the co-processor did not enter its loader.
FixPower the board off completely (USB and battery), wait some seconds and power it on again: the update is tried at every start.
The board has no working IO processor: a clone without one, or a failed chip.
CheckThe error returns at every start, also on battery power.
FixIf the board truly has no IO processor,
BRD_IO_ENABLE0 tells ArduPilot not to look for it; the main outputs then do not work, only the auxiliary ones. Otherwise replace the board.
Parameters to look at
| Parameter | What it is |
|---|---|
BRD_IO_ENABLE | Enable IO co-processor |
The code that sends it
Config Error: Failed to update IO firmware
libraries/AP_IOMCU/AP_IOMCU.cpp AP_IOMCU::check_crc() · Open in ArduPilot Copter-4.7.1