My apologies but with my adaptor it seems FEM is not accessible. A little research shows that it just may not be something G20 has been made available in bimmercode, OR perhaps only available with Ethernet connection.
This adapter does have Ethernet connection capability too, but I don't have the iPhone dongle to test that out.
Here are all the ECU that I see when wireless: (please note there are 2 screenshots)
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