| | Black Berry 8520 Usb Not Recognized
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DEAR SIR I HAVE PROBLEM I HAVE THAT WHEN I AM Connecting MY BB 8520 CURVE Via Usb cable to the pc the messages pop up that USB DEVICE NOT RECOGNIZED... I HAVE PULLED OUT THE POWER SUPPLY OF THE PC AND PUT IT BACK AFTER 5 MIN AND TURN ON PC AND CONNECT AGAIN BUT PROBLEM AGAIN PERSIST SO i have also use blackberry device manager from 4.6 to 7.0 but nothing happened and i have also downloaded os 5.0 for bb8520 curve but the usb not recognized although it says device unknown when it was updating nothing happens pin is not show without battery i have use bbsak for wipe, blackberry master controller but nothing happened and also use jl_cmdr agian nothing happens. i also tried on different pc but nothing happened. i also tried many other data cables and different batteries but nothing happens now there is no any OS In that blackberry not detecting pin and there also problem of usb not recognized plz suggest any solution... thanks