Cant update carrier file to 5.5

[Tunerfreak]

I am trying to update my friends phone so they he can have MMS but every time i go to update it i get an error. i did both the normal update and the one where you select the .ipcc file. any suggestions?

BTW he is on 3.1

[AllTheWay]

Do this first.

Windows 32bit Versions

* Go to Start -> Run
* Copy and paste this into space: "CProgram Files\iTunes\iTunes.exe" /setPrefInt carrier-testing 1
* Hit enter

Windows 64bit Versions

* Go to Start -> Run
* Copy and paste this into the space: "CProgram Files (x86)\iTunes\iTunes.exe" /setPrefInt carrier-testing 1
* Hit enter

Now you should be able to chose the ipcc file that you want.

Credit to this website for the instructions iPhone MMS

There is now a 5.6 carrier file out now. I suggest you use that one.

Here is the download location for that. MEGAUPLOAD - The leading online storage and file delivery service