Extract Huawei E392u Firmware 11.836.13.10.284.B757 on your computer
Install the Firmware update file for Huawei E392u downloaded from Huaweiflashfiles.com
Follow the procedure for updating Firmware that is given in Package.

Huawei Flash File | Size: 12.33 MB
Version: 11.836.13.10.284.B757
Operator:Airtel India
Operating systems: Windows 7/8/10/XP/Vista
Huawei E392u Firmware Download