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Anwar007 Author

Level 1

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I am using UNLOCKED iPhone 3GS with version 4.1.2 which I had purchased from Apple Store in 2011. If I want to upgrade my version, is it safe? If yes then which latest version can upgrade it to?

I am using UNLOCKED iPhone 3GS with version 4.1.2 which I had purchased from Apple Store in 2011.

If I want to upgrade my version, is it safe? If yes then which latest version can upgrade it to?