[Q] Why the OTG function does not work?

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http://forum.xda-developers.com – Hello, My phone version is Android Original 4.3 (JWR66V), has flashed kernal r178, and the ziddey-otg patch. I connect a USB disk with my phone (PC provides power), however, there is no file in usbdisk0, and the usb storage manager indicates that "failure to connect the device". Does any one know how to resolve this problem? Thanks in advanced. (HowTos)