Reply to "Firmware update failed, CP540 can t power on"

RicMember

I know this is an old topic, but I successfully recovered from exactly the same problem. See my post here: https://timingguys.com/topic/5...8#597764686490562328

In short, you must use a real serial port on an old PC, not a USB-RS232 adaptor.

6/27/194:54 AM

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