You can try usb jig. Either buy one or make it yourself if you got spare micro usb plug. You would need to use wire cutters and 'open' a bit of that plug back to be able to use pins that are needed. Idea is to connect 300kOhm resistor (if i remember correct value) between 2 pins - I forgot which ones. Just google for usb jig and you will see DIY - even youtube links.
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