Katyusha-LX9 9.1.0.272(C431E5R1P4)_Firmware_EMUI9.1.0_05016NHL

Katyusha-LX9 9.1.0.213(C185E2R5P1)_Firmware_EMUI9.1.0_05015UKW

After flash follow this (https://www.youtube.com/watch?v=aFGm6e1JzGw&feature=youtu.be)

Katyusha-LX9 9.1.0.249(C185E2R5P1)_Firmware_EMUI9.1.0_05015UKW

Only Unlocked Bootloader --- Flashing By HalabtechTool --- more info here (https://bit.ly/33zK24Q)

(After flash use *Safe Mode Method To Reset Frp* https://www.youtube.com/watch?v=VL4FdfEtDnA) /// (Be Careful Some phone Dead after Downgrade The problem with emmc chip)

Only Unlocked Bootloader --- Flashing By HalabtechTool --- more info here (https://bit.ly/33zK24Q)

Only Unlocked Bootloader --- Flashing By HalabtechTool --- more info here (https://bit.ly/33zK24Q)

Katyusha-LX9 9.1.0.228(C185E2R5P1)_Firmware_9.0.0_r3_EMUI9.1.0_05015UKW

Katyusha-LX9 9.1.0.213(C185E2R5P1)_Firmware_9.0.0_r3_EMUI9.1.0_05015UKW