** THIS WORKED ON MY DEVICE BUT IT MAY NOT WORK ON YOURS. APPLY AT YOUR OWN RISK **
To root Huawei Mediapad T1 8.0 PRO LTE T1-821L
Build No: T1-821LV100R001C178B007 (I guess it should work on older builds too)
Worked fine for me, purify app from the developer also installs automatically unfortunately.
Again your warranty may be void after rooting.