I just tried the same thing -- Windows 7 32 & Windows XP -- & no luck as well. This is on MyWi 4.8.1.
I am having the same issue. I am also using the latest Mywi from Cydia.
The MyWi 4.8.3 update resolved the issue for me.
No changes for me. Still no USB tethering.
It might have something to do with changes to the USB drivers in 4.1. Netshare and PDAnet don't work either.
PdaNet 4.18 claims to work with iOS 4.1. Anyone using it? If so, does it create an ad hoc network like MyWi?
I went to Cydia and drilled down to the MyWi page under manage packages and noticed a message on the screen. "Thanks for purchasing MyWi 4.0! If you haven't done so press here to open MyWi 4.0 and update the license." MyWi opened and shortly rebooted the phone and now all seems well. Typing this on desktop connected to Internet via USB on iPhone.
NiceI've been having problems with USB tethering to my MacBook pro from my iPhone 4. Emailed intelliborn and their support has been pretty helpful. They emailed me a link to a new beta, and it's working great. Can't speak for windows users, but they have fixed it for osx. I'm sure we can expect an official update soon. Email them with a syslog if your having trouble, so they can fix it for you. It's been working great for 2 days for me now.