Helpful Information - Downgrading From EMUI 11 #127 - GitHub
You must enable HDB in your phone's settings to allow the connection. Download Huawei downgrader rar
This process will erase all data on your device, so a full backup is essential before starting. Community Alternative: HiSuite Proxy Helpful Information - Downgrading From EMUI 11 #127
The most secure way to downgrade is through the official desktop application. Download Huawei downgrader rar