at@t model: z431 unlock done by sigma box....[Reference]

[Duplicated]

at@t model: z431 unlock done by sigma box....[Reference]

share kolang mga idol at@t model Z431 galing ibang bansa..

proccedure....
opensigma box
5310 usb cable
install driver in phone
choose qualcomm mode in sigmabox
and click direct unlock..




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