Vky-l29 dead solution fixed sir

Everybody huawei dead boot repair any people successfull via testpoint ?

i am flash after dead huawei vky-l29 but tp via boot repair eroor ..why not succeesful i cann't understand

sir supoort after good solution and successfull report
SigmaKey 2.27.21 HiSi: Write firmware
HUAWEI USB COM 1.0 (COM30), Provider: HUAWEI Incorporated, Driver ver.: 2.0.6.725, Date: 11/6/2015, USB\VID_12D1&PID_3609&REV_0100
Repairing...HLVKYAL00M00A048.skf
Sending boot....Error B00720AA



after not respons sir