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Jun 22, 2009

Activate tethering on iPhone without jailbreaking

During the WWDC keynote, AT&T was strangely absent from Apple's list of carriers that will support tethering in iPhone OS 3.0. AT&T has since explained that it will support tethering later this summer, but many iPhone users are champing at the bit for the added functionality.
(Credit: Apple, Inc.)

If you're one of the eager masses, use this how-to to enable tethering on any iPhone running iPhone OS 3.0--without jailbreaking--on a Mac. (Other blogs have reported Windows tethering steps; please see our links at the end of this piece.)

Difficulty level:


What you need:

>Mac OS X 10.5 or later
>Download this carrier settings file from gizmodo.com and double-click it to mount it in Finder
>iPhone OS 3.0 (7A341) Gold Master final release for iPhone (see below note)
>First prerelease version of iTunes 8.2 (download link)
>Final release version of iTunes 8.2 (download link)

iPhone OS 3.0 will be available to all iPhone users on June 17.

Standard disclaimers apply here. Please read your contract terms of service carefully before proceeding to ensure that you are not breaking your iPhone carrier agreement. Also, while these methods have worked for most people, we cannot guarantee that they will work for you, and you must make these modifications at your own risk. If you do not feel comfortable making these modifications to your phone, we urge you not to try.

Setting up tethering for your iPhone Uninstall iTunes 8.2 Mac

1. Drag the Application iTunes from the apps folder on your Mac to the Trash.

2. Launch Activity Monitor from Applications/Utilities and kill the iTunes Helper process.

3. Go to Finder. Navigate to your ~/Library folder and delete the iTunes folder at ~/Library/iTunes.

4. Navigate to ~/Library/Preferences, locate the following three files, and drag each one to the Trash: com.apple.iTunes.eq.plist, com.apple.iTunes.plist, and com.apple.iTunesHelper.plist

5. Empty the Trash

Install iTunes 8.2 prerelease Mac

6. Install the iTunes 8.2 prerelease you downloaded.

7. Connect your iPhone with iPhone OS 3.0 software loaded on it to your computer with the standard USB sync cable.

8. Once the iPhone is connected, go to the Device Summary page in iTunes.

9. While pressing and holding the Option key on your Mac, click the Restore button in iTunes

10. Browse to the mounted carrier settings file you downloaded and mounted above and select the ATT_US.ipcc file. iTunes will now perform an upgrade on your iPhone and display the following message:

Set up tethering on your iPhone

11. Launch the Settings app on your iPhone and go to General and then Network while your iPhone is still tethered to your computer.

12. Locate "Internet Tethering" and turn it on.

If tethering is successful, you will see a message that is similar to the following:

Go into Preferences Network select the adapter as displayed above, and you'll see something similar to this as it becomes active:

Your iPhone will display a blue background banner on different screens to indicate that tethering is active and running as shown below.

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