How to get iOS6 without iTunes update?

I bought my MacBook a few years ago and apparently it is too old for me to get a new enough version of iTunes for iOS6. I really want this upgrade for my iPhone though and was wondering if it was possible to download it without the new iTunes.

Yes you can download the new version for your iPhone without a computer. From your iPhone go to settings>general>softwear update. Once you click on softwear update you should be able to download it. Remember, this update takes a long time. When I did it It took maybe 45 mins.