278      iPhone_iPad_Mac_apple

I tried to install the itunes update and keep g...

What do I do about installing the iTunes update? I get a message saying that the signature is invalid and it will not be installed.

Redownload from iTunes - Download iTunes Now - Apple.

See Troubleshooting issues with iTunes for Windows updates if you have further problems.

tt2

最后更新：2017-09-19 02:32:42

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