Huawei P20 EML-L29 EMUI9 stock firmware update is now available for Asian variants. The firmware version is 296. This update is only applicable to phones with cust version C636. Android 9 is running with EMUI9 on top. This is official stock firmware from Huawei and can be installed by following the official method. You can either use sd card/OTG to install it or any 3rd party tool can be used. This firmware can be helpful in unbricking your phone.