M7wls bricked ,unable to relock bootloader, unable to flash R ,unable to go rebootRuu

Guys I followed the steps to unlock the m7wls before and unlocked it and using it for 8 months but now one day it went mayheim I can't flash any thing in adb so I tried to Ruu in fastboot the bootloader is not relocking and I am unable to go to RebootRuu mode too in fastboot
The phone still has twrp recovery 2.7.1.1 but I am unable to update to latest version
It showed flashed in fastboot but in recovery same old version exsist
Help me revive this phone
Regards