i have a problem with this unlock
325666752 Sigma dongle 2.15, Initializing…OK
Pack 1: Activated
Pack 2: Activated
——— 2016-02-26 12:34:20 ———
SigmaKey 2.15.04 HiSi: Direct unlock
Connecting…..Error writing to serial port
The port is installed correctly with sigma support drivers for HiSilicon devices.