What are iOS software updates?
iOS software updates are files that you download every time you want to update the software of your iPhone, iPad or iPod via iTunes. After your device has been updated, you don’t need the file you downloaded and thus you can remove it and free up a significant amount of space on your Mac. And in case you need to use such file again, you can re-download it just like you did it for the first time.
How to remove old iOS firmware files from Mac manually?
iOS update files can be found at ~/Library/iTunes, where "~" is your Home folder. Notice, that software updates differ for different devices. That means that, for instance, the iPad firmware files will be kept at ~/Library/iTunes/iPad Software Updates, while you will find the same files for iPhone in ~/Library/iTunes/iPhone Software Updates.
How to clear your Mac of software updates automatically?
Instead of looking for iOS software updates on your Mac manually and making decisions about what files you want to delete or leave untouched, you can take advantage of CleanMyMac 3. Launch it, hit Scan, and then Clean, and the app will clean your Mac from unneeded data cluttering your system, Trashes and iPhoto library (if you have one), including outdated iOS software updates.
Alternatively, you can open the iTunes Junk module of CleanMyMac 3, scanning, clicking Review Details, and then only selecting the iOS software updates for cleaning.
Download CleanMyMac 3 to Remove iOS software updates from your Mac!