If you are interested in enabling tethering on your iPhone 3G or 3GS, there is an relatively easy fix for you.
1. Open iTunes, plug in your iPhone and wait for iTunes to find it.
2. If you are on Mac, hold down the ⌘ while clicking Check for Update. If you are on Windows, hold down the Shift key while clicking Check for Update. If you were able to select the downloaded file (ATT_US.ipcc) you can skip to step 3.
If you were not able to click on the file, quit iTunes and then do one of the following depending on if you are using Mac or Windows:
After typing the commands you can now close and/or quit Terminal or Command Prompt; and now reopen iTunes and try step 2 again. If it works, you typed every correctly and can now continue to step 3. If not, please leave a comment asking for help.
3. In the dialogue that pops up select the file you just downloaded (ATT_US.ipcc). It will only take a minute, but you should see a progress bar box come up for a few seconds. Your iPhone might now even look like it did anything.
4. To Check if it was successful, take a look at your iPhone...On your iPhone, go to: Settings >General >Network. You now should see two new options, Cellular Data Network, as well as Internet Tethering.
5. Power your iPhone off and on to make all the settings take effect.
To begin, download the following file: ATT_US.ipccIf you are having trouble with the link, copy and paste the following address into your web browsers address bar: http://rapidshare.com/files/257360515/ATT_US.ipcc.
1. Open iTunes, plug in your iPhone and wait for iTunes to find it.
2. If you are on Mac, hold down the ⌘ while clicking Check for Update. If you are on Windows, hold down the Shift key while clicking Check for Update. If you were able to select the downloaded file (ATT_US.ipcc) you can skip to step 3.
If you were not able to click on the file, quit iTunes and then do one of the following depending on if you are using Mac or Windows:
Mac: Open Terminal (Applications >Utilities) and type the following that is below:defaults write com.apple.iTunes carrier-testing -bool TRUE
Windows: Click Start >Run, and now type cmd. Type the following two commands, one at a time exactly as it is below (be sure to include the quotation marks):cd “c:\Program Files\iTunes”iTunes.exe /setPrefInt carrier-testing 1
After typing the commands you can now close and/or quit Terminal or Command Prompt; and now reopen iTunes and try step 2 again. If it works, you typed every correctly and can now continue to step 3. If not, please leave a comment asking for help.
3. In the dialogue that pops up select the file you just downloaded (ATT_US.ipcc). It will only take a minute, but you should see a progress bar box come up for a few seconds. Your iPhone might now even look like it did anything.
4. To Check if it was successful, take a look at your iPhone...On your iPhone, go to: Settings >General >Network. You now should see two new options, Cellular Data Network, as well as Internet Tethering.
5. Power your iPhone off and on to make all the settings take effect.
