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Aug 10, 2017, 6:33:47 PM8/10/17
to MIT App Inventor Forum
By default the USB connection when Android development is activated on the device is MTP (Media Transfer Protocol). The aiStarter on my Windows 7 system does not connect with the Android Galaxy S7 until the USB-configuration in the developer settings is changed to RNDIS (USB-Ethernet)

Can not see this mentioned in the appinventor USB help section connect-USB-win

Evan Patton

Aug 11, 2017, 11:29:49 AM8/11/17
to MIT App Inventor Forum
The corresponding instruction is Step 5 of this document:, specifically "be sure that the device connects as a "mass storage device" (not "media device") ". However, this could probably be written a little bit better given that there are now multiple USB modes whereas originally there were only two options.

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