Extract Huawei E3372s-153 Firmware 21.285.99.01.00 on your computer
Install the Firmware update file for Huawei E3372s-153 downloaded from Huaweiflashfiles.com
Follow the procedure for updating Firmware that is given in Package.

Huawei Flash File | Size: 26.24 MB
Version: 21.285.99.01.00
Operator:Normal
Operating systems: Windows 7/8/10/XP/Vista
Huawei E3372s-153 Firmware Download