- Download the firmware from the button at the bottom of the article
- Open iTunes
- Connect your iPhone 4S to PC / Mac
- Press Shift ( Shift ) key and the Reset
- A window will open, you must select the firmware you downloaded from the source location
- Given the OK button and wait
Remember to re-enter in the Settings-General-Network-Network Data-celular APN address internet.wind to surf the Internet!
Let us know via the comments written on if the problem has been solved!
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