Extract Huawei E8377s-153 Firmware 21.300.01.00.00 on your computer
Install the Firmware update file for Huawei E8377s-153 downloaded from Huaweiflashfiles.com
Follow the procedure for updating Firmware that is given in Package.

Huawei Flash File | Size: 39.71 MB
Version: 21.300.01.00.00
Operator: General
Operating systems: Windows 7/8/10/XP/Vista
Huawei E8377s-153 Firmware Download