Does anyone know how to downgrade from EMUI 10.0.0.180 to EMUI 9.1.0.xxx? Having a Linux computer only. Attempted to flash EMUI 9 (Evr-L29B_9.1.0.321_C185E3R3P1), but it always says incompatible version. Very confident my device is EVR-L29 C185 from MEA