Need firmware for htc d728w

please give me firmware for the below details. its gcc version , i searched everywhere, but couldnt find it .please help me.

Model : HTC_A50CML_DTUL
IMEI : 352731080905197
Build : 1.36.401.4
CID : HTC__J15
HBoot : 1.01.0000
MID : 2PQ810000
Security : CURITY FAILED (REMOTE: UNKNOWN COMMAND)
Region : HTC-GCC
RBSofts V1.3 Mobile Tool.