I suggest to clean your USB-Port of the FP2 and remove dust.
Try to make it carefully with a needle and good light to not demage any connectors.
See here, I had much success with my FP1:
I suggest to clean your USB-Port of the FP2 and remove dust.
Try to make it carefully with a needle and good light to not demage any connectors.
See here, I had much success with my FP1: