iPhone 4 is disabled,7.1.2

Dear support;
I have iphone 4 with following details.Tried deffent settings but can not unlock the device.I have used mfs many times before but this phone is making trouble for me.Please help me.This is device information:

Code:

[info] Starting operation ...
[info] Searching for iDevice ...[info] Found device in Normal mode
[info] iOS version 7.1.2
[data] UniqueDeviceID: b23b634ed1feb4cedc618484f6dbdb6c5a8cb8f8
[data] UniqueChipID: 1981707599
[data] DevicePublicKey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
[data] BasebandSerialNumber: 69EA095182084E4249808B0C
[data] BasebandVersion: 04.12.09
[data] BasebandCertId: 257
[data] BasebandChipId: 80
[data] ChipID: 35120
[data] BoardId: 0
[data] DeviceName: Mahmod ifhone
[data] DeviceColor: black
[data] DeviceEnclosureColor: unknown
[data] DeviceClass: iPhone
[data] BuildVersion: 11D257
[data] ProductVersion: 7.1.2
[data] ProtocolVersion: 2
[data] ProductionSOC: TRUE
[data] FirmwarePreflightInfo:
        CertID :257
        ChipID :80
        ChipSerialNo :69EA095182084E4249808B0C
        Nonce :62540199ACCE78722ADBFB4025A680F22AB45FC9
        VendorID :2
[data] ActiveWirelessTechnology: kCTWirelessTechnologyUnknown
[data] DeviceSupportsFaceTime: TRUE
[data] TelephonyCapability: TRUE
[info] MFC Identified device as iPhone3,1
[erro] Could not connect to lockdownd. Exiting.
[done] Operation finished!