Lava Z81 flashing error?

Hi I have Lava Z81.
I tried to flash it but i get this error
"verified boot is enabled please download signed image (md1img-verified.img)or disable verified boot"
i have tried many firmware and tools
sp flash tools and sp_mdt_tool but all give same error


can anyone fix this problem??

Attached Images

• z81.JPG (171.2 KB)