mesu.apple.com

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How to use DNS to block iOS 7, and other updates too

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[updated 6:16 PM EDT]

iOS 7 is arriving tomorrow. Those of you with many devices and little bandwidth (I'm looking at you, education) may be worried about those multiple 1GB+ downloads. Apple's caching server (currently in beta) isn't going to help yet — iOS 6 doesn't know how to use it. So here is something that may help.

iOS devices check for new versions by polling the server mesu.apple.com. This is done via HTTP, port 80. Specifically, the URL is:

If you block or redirect mesu.apple.com, you will inhibit the check for software updates. If you are really ambitIous, you could redirect the query to a cached copy of the XML, but I haven't tried that. Please remove the block soon; you wouldn't want to prevent those security updates, would you?

Good luck. For the rest of you, happy updating tomorrow! We be here with plenty of news.

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