Pixhawk 2.4.8 not powering on but it is connecting to mission planner showing “config error.failed to update IO firmware” what should I do??
It seems like the IO MCU is failing - try loading earlier firmware, around version 4.2 for example, or try loading PX4 via QGC. If those work, then go back to Arducopter 4.5
Please let us know what happens.