B311-520 8.0.1.1 H185SP8C983 Firmware 05015XUK firmware
B311-520-CUST 8.0.1.1(C00) CONFIGURABLE SOFTWARE GENERAL 05015MLW
B311-520-WEBUI 8.0.1.31(W2SP1C03) CLIENT SOFTWARE GENERAL 05015MMB
[ Model Name: Huawei B311-520 Firmware ] [ Model Code: B311_520 ]