It does not detect the USB stick. Do you have any pictures which connection I sould be looking for
You don't need anything for updating analog boards.
First, press "Help, Help, M4, M2, M1" to update the board1.
Then, press this sequence twice: "M4, M2, M2" to update the board2.
But I'm far from sure that will fix your problem.
Cheers.
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Daniel.