Voltmeter on DC volts, _ not ~
Black to the tin can.
Red to one point, measure.
Red to other point, measure.
Did one say zero and the other say 1.8V?
Try this:
Voltmeter on "diode test" as in photo.
Black to tin can.
Red to the point that you just measured as zero.
Hold that position and with your third hand push the power button for a reset.
It should come back automatically as 05c6/9008 EDL mode.
If you have Zadig loaded just do this: