ICSInstall.CAB

I just used this file on my 920
Install ICS cab (above)
Restart the phone
Run IntShrUI from programs
connect with USB cable until the phone shows connected
close the program
run WMWiFiRouter
3g to Router

The first time it connected to the internet and then disconnected saying disconnect for unknown reason. When I tried the second time, it worked perfectly and has continued since.

Hope this helps everyone.