Extract Huawei B610s-77a firmware 11.189.03.00.643 on your computer
Install the firmware update file for Huawei B610s-77a downloaded from Huaweiflashfiles.com
Follow the procedure for updating firmware that is given in Package.

Huawei Flash File | Size: 84.83 Mo
Version: 11.189.03.00.643
Operator: SoftBank Japan
Operating systems: Windows 7/8/10/XP/Vista
Huawei B610s-77a Firmware Download