HomeHuawei Firmware Download firmware Huawei E5220s-1 update 21.143.11.00.910 OM India GSM Solutions 04 March Download firmware Huawei E5220s-1 update 21.143.11.00.910 OM India Firmware Details File size: 18.29 MB Version: 21.143.11.00.910 Operator: OM India Operating systems: Windows 7/8/10/XP/Vista Download