The quote below from this forum topic, "cant get new update to load on any TIU", may help.
"You'll need to go to your device manager and expand Ports (COM & LPT).
Take note of what is listed and then plug in your TIU and see what changes, the new COM port number is the one you want to select in the CONUMER LOADER, from the Options drop down menu serial port setting.
Also remember that MS Windows will track the which USB port you plug your TIU into. If you plug your TIU into a different USB port, Windows will create a new COM Port to access it."
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