Extract Huawei B660 firmware V100R001C03B110SP01 on your computer
Install the firmware update file for Huawei B660 downloaded from Huaweiflashfiles.com
Follow the procedure for updating firmware that is given in Package.

Firmware Details:
Huawei Flash File | Size: 6.39 Mo
Version: V100R001C03B110SP01
Operator: H3G Austria
Operating systems: Windows 7/8/10/XP/Vista
Huawei B660 Firmware Download