According to MacDailyNews these instructions work better. ----- by gointoscott June 16, 2009 9:01 PM PDT Well I tried this and low and behold it worked! You do not have to downgrade itunes. this is what you do: 1. You also need to download the carrier settings file listed above and save it somewhere ( I chose desktop) 2. then copy this: defaults write com.apple.iTunes carrier-testing -bool TRUE 3. then open terminal on a mac that you sync itunes with. then paste the copied info into terminal and hit enter. 4. once you have this then you just sync your iphone, then after it says ok to disconnect, then hold options and click restore. 5. It will then ask you to chose what file to restore. search and go to where you saved the att carrier file it is called (att_us.ipcc) it will NOT be grayed out if you run that terminal command. If by chance it is grayed out, run the command again, then go to options restore and it will then be available to click on. 6. Chose the file and restore. It will then add it to your iphone as the instructions above show 7. once done you can go into settings on iphone while its connected to your computer, then go to general, then network and you will see where you can turn tethering on. I was so excited. I also agree that it is pretty fast with 3g service. - Gerard Lagana from Bookmarklet

Has anyone discovered the PC hack yet? - Peter Ghosh