Error conecting to server

Hi.
after update to latest version i cant used sigma box!
SigmaKey 2.27.20b1 Qcom: Direct unlock
DBAdapter Reserved Interface (COM73), Provider: Huawei Incorporated, Driver ver.: 2.0.6.601, Date: 2/4/2010, USB\VID_12D1&PID_1035&REV_0228&MI_04
Removing firmware protection...Unable to connect to the server. Please check your network.
i checked the internet connection.everything is ok.