Extract Huawei E398 Firmware 11.335.31.00.000.B757 on your computer
Install the Firmware update file for Huawei E398 downloaded from Huaweiflashfiles.com
Follow the procedure for updating Firmware that is given in Package.

Huawei Flash File | Size: 11.72 MB
Version: 11.335.31.00.000.B757
Operator:Universal
Operating systems: Windows 7/8/10/XP/Vista
Huawei E398 Firmware Download