big thanks to sigma team..
SigmaKey 1.23.02 Qcom: Direct unlock
ZTE Handset Diagnostic Interface(DFU) (COM122), Provider: ZTE Corporation, Driver ver.: 5.2066.1.9, Date: 6/2/2011
Version: P772A12V1.0.0B14,
Firmware: 76XXU-USNSKOLYM-2040
Date: Jun 14 2012 17:20:35, May 11 2012 14:00:00, USNSKOLY
IMEI: 864037010112065
Bluetooth address: 1AB3D881E08C
Security area saved to "D:\Sigmakey\864037010112065_USNSKOLY_Jun 14 2012_172035_May 11 2012_140000.skb"
Unlocking phone.....Done
Restarting phone...Done