Downgrade Huawei phone from Android 10 EMUI 10 to Pie EMUI 9.0 or 9.1 | Huawei Advices
I'm trying to downgrade my P30 pro with the dload method however it isn't working can somebody help please? (It's formatted NTFS and has 16gb) : r/ Huawei
Huawei P40 Pro | EMUI 12 Downgrade EMUI 10 Support Install (GMS) - ICTfix