Enable Tethering on iPhone 3.1.2 - ONLY 3G & 3GS Supported

These instructions are of OS X. I used Snow Leopard, I don't know if Leopard ships with bspatch or not, but if it does then you should be good. Also, make sure you have MobileTerminal installed on your phone.

• First get this file and put CommCenter.patch on your Desktop:
  3G S: http://iphwn.org/CommCenter_3gs_312.zip
  3G: http://iphwn.org/CommCenter_3g_312.zip

• Copy /System/Library/PrivateFrameworks/CoreTelephony.framework/Support/CommCenter to your Desktop also.
  

• Open the Terminal and:
  cd Desktop
  bspatch CommCenter CommCenter-hacked CommCenter.patch
  

• Now go ahead and delete CommCenter now from your Desktop and rename CommCenter-hacked to just CommCenter.

• Rename CommCenter on your iPhone to CommCenter.backup in case something bad happens, so you have a backup.

• Copy the new CommCenter to your iPhone.

• SSH into your iPhone or use MobileTerminal as root and chmod +755 the new CommCenter so that it's executable.

• Restart your phone.

• Check your Setting > General > Network, and you should have the Tethering option. If you dont Go to http://help.benm.at on your phone and install the mobileconfig just like you did in 3.0.

Jailbreak 3G[S] 3.1 with baseband 05.11.07

I recently helped a co-worked jailbreak there 3G phone running clean 3.1 Firmware with baseband 05.11.07.

This tutorial will jailbreak the 3.1 Firmware for iPhone 3G[S]. IT WILL NOT UNLOCK!!!!!
DO NOT USE THESE INSTRUCTIONS IF YOU ARE TRYING TO UNLOCK.

THIS IS FOR JAILBREAK ONLY!!!!


1) Download PwnageTool from Dev-Team
2) Create a Custom IPSW for your device using PwnageTool
2a) BY DEFAULT IT WILL ACTIVATE PHONE. DESELECT THIS OPTION UNDER GENERAL!
4) If you are using a 3G[s] which has never been JailBroken/Pwned you need to use iReb
5) Use IReb to put iPhone into WhiteScreen Mode
6) Once in WhiteScreen Mode proceed to iTunes to restore using custom IPSW

Enable MMS/Tethering on iPhone

This will enable MMS and Tethering on firmware 3.0, 3.0.1, and 3.1 iPhone 3G{S}

NOTE: THIS WILL WORK FOR JAILBROKEN and NON-JAILBROKEN iPhones
(this will not work for 2G iphones)

WINDOWS VERSION
1. Download this carrier update file (v5.5)
http://tinyurl.com/attipcc55

2. Close iTunes (if it is already open)

3a. Click Start > Run > type:cmd then press enter. Run this command: "C:\Program Files\iTunes\iTunes.exe" /setPrefInt carrier-testing 1

3b. (If you're on x64 Windows) Click Start > Run > type:cmd then press enter. Run this command: "C:\Program Files (x86)\iTunes\iTunes.exe" /setPrefInt carrier-testing 1

4. Open iTunes.

5. Hold the shift key while clicking update under your iPhone in iTunes.

6. Change the file type to “iPhone Carrier Configuration files” by clicking in the the bottom right corner and switching to *.ipcc. filetype

7. Find the file of the carrier update you just saved to your computer in step 1, select it and click open.

8. Your iPhone is now updated. Make sure to reset your phone, and when it restarts, MMS should be working.

Mac/OS X Instructions

1. Download this carrier update file (v5.5)
http://tinyurl.com/attipcc55

2. Close iTunes.

3. Open the Terminal Application (Applications>Utilities>Terminal) and run this command: defaults write com.apple.iTunes carrier-testing -bool TRUE

4. Open iTunes

5. Hold the Alt (Option) key while clicking update under your iPhone in iTunes.

6. Find your file of the carrier update you downloaded and select it.

7. Wait for the update. Once it’s done, turn off your iPhone and turn it back on.

8. Your iPhone is now updated and MMS should be working fine.


Troubleshooting:
Those receiving the 0xE800003D error: Did you install a carrier theme from Cydia? Like the AT&T logo or MakeitMine? If so remove that and try again. It seems that others before were getting that error because of this.