I'm trying to use an old iphone 4s that does not have cellular service but is connected to my work wifi for imessaging. My work PC is on a LAN that is on a different subnet then the work wifi. So therefore Im attempting to use the USB method. The issue is I cannot connect even after downloading the itunnel_mux_rev71 software and following the instructions as described. I have verified that the remote messenger is enabled and port set to 333 (I have tried numerous other ports also). When I type in 127.0.0.1:333 both Internet explorer and chrome fail to connect at all. is there an issue with the phone not having cellular service and using wifi to get access to imessaging instead?