Extract Huawei E3331 WebUI 12.003.05.01.03 on your computer
Install the WebUI update file for Huawei E3331 downloaded from Huaweiflashfiles.com
Follow the procedure for updating WebUI that is given in Package.

Huawei Flash File | Size: 11.12 MB
Version: 12.003.05.01.03
Operator:Normal
Operating systems: Windows 7/8/10/XP/Vista
Huawei E3331 WebUI Download