Installing TWRP for mate 8 dual sim 64gb

[AC Question]

Has anyone found a working solution for installing TWRP for mate 8 dual sim 64gb version.? Everytime i flash twrp using adb commands the phone boots into the original huawei recovery (eRecovery) and not TWRP. Bootloader is unlocked. My phone is on EMUI 4.1 I have even tried unlocking FRP using dc unlocker but this does not help. I need to install TWRP before i root the phone. ADB drivers and huawei drivers installed. Please help!