(Solution) GM MDI Manager: not connected to MDI

During the procedure of GM MDI activation, a little part of users may get the error reading “GM MDI Manager: not connected to MDI” or keep failing to activate as the following picture shows:
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Solution:
1.    Press the button as following picture shows and connect to power supply.
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2.    Keep pressing this button and connect to power supply wait till 10s
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3.    When all the lights on, stop pressing the button
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4.    Use USB cable to connect GM MDI to pc
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5.    Open GM MDI choose “Recover”.
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Product link:http://www.eobd2.fr/latest-high-quality-gm-mdi-multiple-diagnostic-interface-2918.html