246      iPhone_iPad_Mac_apple

iTunes error 3503 (updating to iOS 11)

Hi,

today I tried to upgrade my iPhone 6s to iOS 11 and everytime I tried error message with code "3503" kept popping up. I used the newest version of iTunes on my Windows 8 PC. I search whole Apple Support and it didn't help. Does anybody have the same problem? And what should I do to fix it?

Thank you

Today i tried to upgrade ipad to ios11 , and i have this error too. I can't find how to fix this problem on the apple support website, could you please tell me here if you find a solution?

最后更新：2017-09-25 05:33:21

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