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Use DNS to block OTA updates for iOS

For those of you who want to prevent any more client from updating to iOS OTA (as long as they aren’t taking them home), block the following URL with your web filter:

http://mesu.apple.com/assets/com_apple_MobileAsset_SoftwareUpdate/com_apple_MobileAsset_SoftwareUpda…

This will prevent the iPads from checking for software updates.

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