Have seen similar issues discussed but not this exactly. About 5-10 minutes after power up the “I/O Bootloader Mode” LED comes on solid yellow and pixhawk is no longer responsive to RC transmitter or Mission Planner. Requires a power cycle to become responsive again. The LED/hang behavior seems independent of how much interaction has occurred via RC or MP, or whether they are even connected.
I am running Ardupilot Rover Beta 3.5.0 rc1 (on ChibiOS) with a boat frame (which is needed for its multiple relay support). It would be helpful to know what exactly this LED indicates - e.g. failure of the bootloader ? …bootloader trying to reload firmware ? Should I be trying to re-install the bootloader ? Bug in ChibiOS or beta rover ? pixhawk h/w failure ?
All pointers welcome.