Extract Huawei E303h-1 Firmware 21.318.15.01.284 on your computer
Install the Firmware update file for Huawei E303h-1 downloaded from Huaweiflashfiles.com
Follow the procedure for updating Firmware that is given in Package.

Huawei Flash File | Size: 15.28 Mo
Version: 21.318.15.01.284
Operator: Airtel India
Operating systems: Windows 7/8/10/XP/Vista
Huawei E303h-1 Firmware Download