Here is the working solution to MB star diagnostic system SDConnect C4 Xentry online update Connection failed problem.
Problem goes like this:
The error may be caused by wrong IP setting.
If connect SD C4 with WiFi, you should set IP address automatically.
If connect C4 via USB, manually set IP to
IP address: 172.29.127.1
Subnet mask: 255.255.255.0
Then connect c4 via WiFi.
Follow this way:
Go to Network Connections – Ethernet – Right-click Properties – select Internet Protocol Version 4 (ICP/IPv4) –
use the following IP address: