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unlocking problem with U7510s

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  • #1

    unlocking problem with U7510s

    hi guys i am unlocking huawei U7510s but give me this problem so please help me i am new with this

    Found Phone : 19
    Model : Huawei U7510/U7517/U7519
    IMEI : 356755031212243
    Firmware : APP-U7510-sV100R001ESPC86B548-SEC-DEBUG-NOLOG

    ================================================== =================

    Unlocking, please wait ...

    Preparing Boot Download mode ...

    unlock failed !

    (error code 21)



    thnx
    Tags: None
  • #2
    Check if use latest dc-unlocker software version. Check, if phone is detected by autodetect, check, if no other modems or phones are connected to computer at detect time. Try restart computer and detect again.

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