How can i download iOS 4.3 to my iphone 4?

how can i dowload iOS4.3 in my iphone 4?

If your iPhone is a 3G then iOS 4.2.1 is as high as it goes.
If it is an iPhone 4...
Connect to iTunes on the computer you usually Sync with and “ Check for Updates “...
If an Update Appears Install it... if not... you are up to date for your particular Device...
See the Using iTunes Section Here...
How to update your iPhone, iPad, or iPod touch
Please Note: a 4 will update to the Latest Version of iOS which is currently iOS 6

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    http://support.apple.com/kb/HT4972
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    http://support.apple.com/kb/HT4623
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    tinynell wrote:
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