Non-jailbroken users:
1. Plug your iPhone 5 into iTunes and backup the device so you won’t lose anything, just in case.
2. In the device itself, tap the “Settings” app and navigate to “General >Reset > Reset Network Settings”
3. Once you have done that, the iPhone will auto reboot.
4. Download the hacked carrier update here:http://www.4shared.com/file/WF0uqJL-/TMobile_US_iPhone_Hack.html
5. Once downloaded, your iPhone will boot up into iTunes. Before you do ANYTHING, make sure to decline any and all prompts to update carrier settings. Now you’ll to go ahead and enable iTunes to except custom carrier bundles, if it’s not already.
7. Windows users, you will need to open command prompt and type the following and enter it in:
64 bit: cd “C:\Program Files (x86)\iTunes” then type: iTunes.exe/setPrefInt carrier-testing 1
32 bit: cd “C:\Program Files\iTunes” then type: iTunes.exe /setPrefInt carrier-testing 1
Mac users you will need to open terminal and type the following and enter it in:
Mac: defaults write com.apple.iTunes carrier-testing -bool true
8. After this has successfully been entered in, click on the tab for your iPhone 5 and click “Update” or “Check For Update” while holding down the Alt / Option key for Mac users and the Shift key for Windows users. Navigate to where you downloaded the hacked carrier update file named “TMobile_US_iPhone.ipcc,” and select it then click Open.
9. The carrier update should now successfully be installed. Restart your iPhone 5 for any changes to take effect.
10. If you encounter any problems or wish to revert back just download the file below and repeat the above steps only with the default file instead.
Default File:http://www.4shared.com/file/M3vMO7Pe/TMobile_US_iPhone_Default.html
