Multiple updates

Tulani said:

Is there a way to download an iOS update ONCE and install on several devices to save bandwidth?

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Unless all of the devices are the same, no

Tulani said:

Ok. How can I do it for same devices?

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google iOS 7.1 download and download the ispw file for that specific device. Once its downloaded, hold down on the option key (Mac) or the shift key (Windows) and click the “Check for Update” button in the Summary pane. Browse to the .ipsw file you downloaded and select it.

Tulani said:

Thank you

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No problem

iTunes saves the IPSW when you update a device, so if all of your devices are the same model, iTunes will reuse that file.

Tulani said:

This method seem to be more reliable and efficient given the huge file sizes.

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53kyle said:

iTunes saves the IPSW when you update a device, so if all of your devices are the same model, iTunes will reuse that file.

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As he said, iTunes actually does the same thing for you but once you have to search around for the ipsw