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The IPSW (or DMG) for a 5S will not work on a 6, they are both different files, since they're different devices.
 
Yes it will work but only when you tap on the device with a pen two times and then blow on it three times.
 
Oh a 5s wouldn't. Why wouldn't you just download the one for the 6?

I didn't ask the question. I don't know why he won't just download the IPSW for the 6.
But the question was, if the IPSW for the 5s will work on the 6. And the answer to that question is, no it won't.
 
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