If you encounter Error code (506) with MB SDConnect toolkit, reading at detailed: SDconnect is accessible and no connection to another diagnosis computer. (506)
No SDconnect is selected or the desired SDconnect cannot be selected.

You need to do as follows:
Firstly, connect to local area connection and check IP address setting, do as follows:
1). Click Local Area Connection
2). Right click Properties
3). Internet Protocol (TCP/IP)
4). Choose Properties
5). Set IP address to: 172.29.127.119
6). Click Ok

Secondly, set wireless connection after local area connection settings is done.
1). at the right corner of the desktop click SDconnect icon
2). Enter into SDconnect Toolkit Administration
3). Click Register / configure
4). Select name 04
5). Tick off WLAN parameters, road
6). IP address set as: 192.168.2.200
7). Key- enter aaaaaaaaaaaaaaaaaaaaaaaaaaa (26 a in total)
8). Click Start.