Extract Huawei B593u-91 firmware V200R001B180D20SP00C00 on your computer
Install the firmware update file for Huawei B593u-91 downloaded from Huaweiflashfiles.com
Follow the procedure for updating firmware that is given in Package.

Firmware Details:
Huawei Flash File | Size: 185.66 Mo
Version: V200R001B180D20SP00C00
Operator: Universal
Operating systems: Windows 7/8/10/XP/Vista
Huawei B593u-91 Firmware Download