I am unable to upgrade my Iphone 4 3G software to IOS 5.0. My phone is 2 years old.
That's correct. You are unable to upgrade an iPhone 3G to iOS 5. You are unable to upgrade the iOS past 4.2.1.
This is normal.
Edit: Wait, do you have an iPhone 4 or an iPhone 3G? Your post is a little confusing.
What happens when you try?
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