Step 6 – Once you are in TWRP Recovery, tap on the ‘Install’ button from the list, choose the ZIP file that you copied to your phone memory in Step 3.
Step 7 – Confirm installation on the next screen by swiping on the “Swipe to Confirm Flash” option. The installation procedure should start now as show below.
That’s it. Your Huawei Mate 9 has now been rooted with SuperSU package. Check for the SuperSU app in your apps list to verify.
To make sure you have correctly installed the above root method and it’s working, verify with Root Checker as given in the link.
If you run into any problems, feel free to drop us a comment below and we will reply you back ASAP with the fix or the solution to your problem.