what version iTunes required for iPhone 6?

Hi swan1074,

Thanks for reaching out using Apple Support Communities. Here to help.

We understand you're wanting to make sure you have the correct version of iTunes installed to be able to sync your iPhone 6.

We see you came from the related article, 'If you can't install or update iTunes for Windows'. Are you having trouble installing or updating iTunes? This is a helpful article as it includes instructions for repairing iTunes and removing old components.

Regardless of what type of iOS device you are trying to connect to iTunes, you will want to install the latest version available for your computer. You can use the link below to download now.

iTunes - Apple

Hope this helps! Feel free to reply to let us know more specifically what issues you are running into, and we will happily assist. Take care for now.