Extract Huawei E3331s-2 Firmware 22.146.03.00.1100 on your computer
Install the Firmware update file for Huawei E3331s-2 downloaded from Huaweiflashfiles.com
Follow the procedure for updating Firmware that is given in Package.

Huawei Flash File | Size: 13.98 MB
Version: 22.146.03.00.1100
Operator:Mustek Africa
Operating systems: Windows 7/8/10/XP/Vista
Huawei E3331s-2 Firmware Download