huawei p20 pro suported to repair country ????

SigmaKey 2.28.04 ADB: Remove FRP
^ Android Composite ADB Interface
Phone model: HUAWEI CLT-L29
Android 8.1.0; Firmware: HUAWEICLT-L29; Date: Sat Mar 3 03:37:27 CST 2018
Version: CLT-L29 8.1.0.112D(EUC652)
Baseband Firmware: 21C20B352S000C000,21C20B352S000C000
Removing FRP lock....Done


i have huawei p20 pro
demo is on
to disable demo i need to repair country and ventor
is not suported ?? to repair ?