USB diagnostic mode

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http://androidforums.com – I've seen other topics about this for other phones, but only one for the HTC Hero. In that, two people suggested entering a certain command from the ADB shell. enable: echo 1 > /sys/devices/virtual/usb_composite/diag/enable disable: echo 0 > /sys/devices/virtual/usb_composite/diag/enable another alternative was specifying "/dev/qct_diag_enable" instead. I tried both commands running on CM 7.2, but it ddn't work. Is there some other method that can put the Hero in diagnostic mode, so that QPST can be used? (General)