Recently I got a new iPhone 5 so I had backed up my old iPhone 4 with iTunes so I could transfer all my information. But, when I plugged in my iPhone 5 it came with this message: "The iPhone "Rachel's iPhone" cannot be used because it requires a newer version of iTunes. Go to www.itunes.come to download the latest version of iTunes". The iPhone 5 is iOS9.2
So, I went to the website to download iTunes since it was version 12.1.2 and needed to be 12.3.2, downloaded it, went to do the set-up, then it came up with the message: "A later version of Apple Software Update is already installed on this computer." SoooOOoo, I tried uninstalling it (following every single step on Apple Support to do it) but when I was coming to uninstall all the apple programs I couldn't find "Apple Software Update", it wasn't in my Programs...
I did all the steps anyway, and the same message of "A later version of Apple Software Update is already installed on this computer." came up after I tried to reinstall iTunes.
So, I guess my overall question is, what do I do? How can I fix this?Please answer soon.