I don't know how many of you still remember this, but last year, when iOS 7 has been officially released, files needed for OTA Update on iPhone, iPad and iPod Touch were automatically downloaded by iOS 6. This generated the unnecessary occupation of space in the terminals of those who did not want to upgrade, files occupying from 600 MB on iPhone or iPod Touch and up to 2 GB, in the case of iPad tablets.
The problem for Apple Lossless Audio CODEC (ALAC), it was so big that the company was sued at one point, so he decided to implement in iOS 8 an option that allows disabling the automatic download of updates. The problem is that iOS 7 does not have such a function available, so the files needed for a OTA Update for iOS 8 they will be downloaded automatically and cannot be deleted from the terminals, unless you have jailbroken.
If you don't have jailbreak on your iPhone, iPad or iPod Touch, then either update to iOS 8, or leave only a maximum of 600 MB available space in terminals and files for software Update they will not be downloaded. If you have jailbroken, then you can use Cydia tweaks to block checks made at Apple for updates dedicated to the operating system.
Don't forget to read this article if you want to update to iOS 8 without losing data from terminals.
