Here is a tutorial how to setup wireless on decoder under a OpenNFR 6.2 image.
For this tutorial you need.
First connect Wireless USB to your VuPLUS
Connect your Wireless USB stick
Select WLAN Connection
Select Scan Wireless networks
Select your Wireless network and press GREEN BUTTON to configure
Now, configure your wireless network, choose the type of encryption and enter the key
When you finish press OK
Select YES to confirm
Aftter the network module will restart this action will take 30-60 seconds
Congratulation your receiver is connecting now to your wireless (your IP address is : 192.168.1.200)
You can also watch this video to help you