@Phaedrux said in Toolboard firmware issues:
If it's still not functional in standalone we'll look into warranty replacement.
Standalone success! I don't know what was different vs. the last time I tried it, but I dropped the SD card back in for standalone mode, and fired the printer up, it pulled down firmware and all appears to be good.
I hate errors where I can't identify a clear root cause, but I'll take a success on this one.
Thanks for the advice all, hopefully this thing behaves itself from here on out.