Where to find the iPhone software update
October 11th, 2009
If you are like me and want the ability to return to a previous version of the iPhone OS then you’ll need to start taking back-ups of the downloaded OS images.
When you click to Update your iPhone in iTunes and select Download with the intention to install later, you’ll be able to take a copy of the downloaded file before you install.
Once downloaded, this can be located under your User folder /Library/iTunes/iPhone Software Updates