Unlock Bootloader ( Load Fastboot ) By Chimera or hcu And use This File
USE SIGMA AFTER FALSH
MAR-L01A 10.0.0.325(C431E11R2P7)_Firmware_EMUI10.0.0_05015SJX
MAR-L01A 10.0.0.305(C431E11R2P7)_Firmware_EMUI10.0.0_05015UVQ
Only Unlocked Bootloader --- Flashing By HalabtechTool --- more info here (https://bit.ly/33zK24Q)
MAR-L01A 10.0.0.275(C431E8R2P7) Firmware EMUI10.0.0 05016RDP