"Once the indicator light stayed yellow for a few moments indicating an update in progress but ultimately failed as well."
That's a bit of a clue. If you cannot clear/get to Com Port 5. Then something of over riding it. The fact that a update
is in progress could indicate that a process is hung up.
A firmware up date must complete so Windows may have the com port restricted so the DigiIPL process can complete.
That may be why the In use error happens.
Inobu?
