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Loss of USB communication OSX, MIOS Studio, Cores!


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I boot up my latest model Mac Mini and I find a sudden failure of MIOS Studio USB communications with 3 LPC17 based Cores.

Not a complete loss, the midi monitor on the Mac is seeing input from a midi keyboard forwarded to USB1 in the SEQ's router.

But the "Query" button does not work on all 3 devices (KB, NG, SEQ).

I've tried rebooting, power cycling the devices, isolating devices, restarting MIOS Studio etc,etc.

The task at hand is to reflash the firmware in the SEQ but I can't get that far!

The only thing I can think of is an automatic update has caused some nasty change, but I have no idea really.

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