v85b issues, How to check if teensy board?

Bubbles

New member
Sep 9, 2023
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Updated to the new firmware today 85b and it now undetectable by what I exclusively use it with. I need to downgrade the firmware to a older version but I don't know what chipset I have. Does anyone know how to check? I unscrewed the bottom plate but I'm uncertain what I need to do to check, I really don't want to break it.
 
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