After almost 2 years of waiting for tethering it is finally here in the 3.0 software. It is not something completely obvious to do, but can be enabled with a little bit of knowledge, which should not be too hard if you have the Dev kit already anyway. Crunchgear has posted a step-by-step guide on how to enable the tethering and also a few pictures of it in action. See the instuctions below.
Step 1: Check if you own a 3G iPhone. If you’re on EDGE (as I am): sorry. Tethering does not seem to work with EDGE phones.
Step 2: Check to see if AT&T is your carrier. If it is: sorry. AT&T will not let you tether.
Step 3: Navigate to ~/Library/iTunes/iPhone Carrier Support. Notice the spaces in that last folder name! If you’re at the command line, use backslashes to escape the spaces, i.e. cd ~/Library/iTunes/iPhone Carrier Support. You will find a file with an ipcc extension. Copy that file: e.g. cp foo.ipcc foo.ipcc.original. This creates a backup for when you mess up.
Step 4: rename the ipcc extension to zip. For me that was ATT_US.ipcc renamed to ATT_US.zip. (Did I mention how I’m on a 1st Gen iPhone with AT&T?). Unzip it. This creates a new folder called Payload.
Step 5: Navigate into Payload and then into the folder under that. Mine was called ATT_US.bundle. Yours will differ. Inside that folder you will find three files that you will edit: Info.plist, version.plist, and carrier.plist. Open all three in the Property List Editor that comes with the dev tools on a Mac.
Step 6: In Info.plist, change the CFBundleVersion to 5.0. Save.
Step 7: In the version.plist, change the CFBundleVersion to 5.0. Save.
Step 8: In carrier.plist do the following and then save:
(a) Add a new dictionary to the apns array:
apn = internet
password = password
username = iphone
(b) In the wap dictionary (mine is wap.cingular, sts’s was wap.dol.ie), add a new pair. Do not edit the password or username:
type-mask = (NUMBER) -2
(c) Add a new pair at the top level dictionary of the carrier.plist file. (We’re not sure this is strictly speaking necessary but go ahead and do it.):
AllowEDGEEditing = (BOOLEAN) YESStep 9: Zip up the Payload folder in which you just made your edits. Rename it to the same name as the original ipcc file. (For me that was ATT_US.ipcc).
Step 10: Connect your iPhone to iTunes.
Step 11: In the Summary tab, option-click “Check for Update”. Navigate to your ipcc file, select it. It takes no more than a second or two to update.
Step 12: Reboot your iPhone.
Step 13: In prefs (on the phone) navigate to Settings > General > Network.
Step 14: Let me know how this worked for you.
HOW TO FIND A CARRIER IPCC FILE:
curl -s -L http://phobos.apple.com/version | grep -i carrier
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Great write up. The iPhone is truly revolutionary and I don’t like being without it. This time last year I had jumped in a pool with my iPhone and it was dead. I had to wait 9 days before I was able to buya new one. The phone I had was a cheap go phone. I really love all the games that can be downloaded to the iPhone. The best part about the iPhone to me is the ability to check emails on the fly. Thanks for the information.