SPD SC6531A trying unlock by Piranha Box Failed


Searching USB to Serial Port…
SU2Serial Port: COM224
Connecting to Phone,Wait..
Done.
Infor: SPRD3
Initialize boot9…
CPU type: 6531A
Flash type: NOR
Being analyzed,Wait…
IMEI1 :358699063767336
IMEI2 :352751019523267
IMEI3 :358570010103893
IMEI4 :910575601400468
Unlock Code: 1234
Unkown Error

please Help me:confused::mad: