iPhone 12 on iTunes High Sierra

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Level 1

8 points

iPhone 12 on iTunes High Sierra

I am stuck with High Sierra on my Mac Mini. When I plug in my iPhone 12, iTunes (sometimes) asks if I want to connect to the phone, but the message to trust the computer never shows up on the phone. As a result of this, I can't connect my phone to iTunes. I can connect the phone to Image Capture and it correctly shows the 'Trust this computer' message on the phone. I can also see my photos after that.

Has anyone else had this happen? How do I fix this?

Thanks

iPhone 12, iOS 14

Posted on Oct 28, 2020 7:15 AM

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Answer 1

turingtest2

Level 10

274,398 points

Oct 28, 2020 7:55 AM in response to Mark_Apple03

For iOS 12 you need iTunes 12.8.0.150 or better running on OS X 10.11.4 or better. See How to upgrade to OS X El Capitan - Apple Support if required. iOS 13 & 14 require iTunes 12.8.2.3 or above.

Assuming a suitable version of iTunes is in place then in Finder use the menu item Go > Go to Folder..., copy the following text, paste it into the dialog box and press enter:

/System/Library/PrivateFrameworks/MobileDevice.framework/Versions/Current/Resources

Unlock your device and connect it to USB. Double click on MobileDeviceUpdater in the folder that has opened. It should notify you of a software update. Install it and iTunes should hopefully recognize your device.

tt2

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Answer 2

turingtest2

Level 10

274,398 points

Oct 28, 2020 1:35 PM in response to Mark_Apple03

See the Get Help section of About the 'Trust This Computer' alert on your iPhone, iPad, or iPod touch - Apple Support.

tt2

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Answer 3

Mark_Apple03 Author

Level 1

8 points

Oct 28, 2020 8:51 AM in response to turingtest2

So iTunes will put up the message about allowing connection to phone, but the 'Trust this computer' message never shows up on the phone.

iTunes shows as version 12.8.2.3.

MobileDeviceUpdater runs, but doesn't prompt for any updates.

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Answer 4

Mark_Apple03 Author

Level 1

8 points

Oct 28, 2020 1:15 PM in response to turingtest2

I reinstalled iTunes and unlocked phone before connecting USB. iTunes displays the ' Do you want to allow iTunes to access this phone'. I press continue and it prompts with 'Please answer the prompt on the phone'. The phone never prompts to Trust the computer. Eventually the iTunes message times out and phone is not shown.

When I initially plugged the phone in, it prompted that software needed to be updated. It was running through an update process when it flashed an error. I wasn't able to see what it said. Perhaps there is someway to back out that update?

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Answer 5

turingtest2

Level 10

274,398 points

Oct 28, 2020 8:57 AM in response to Mark_Apple03

Are you unlocking the device before you connect it to USB? You can try reinstalling iTunes 12.8.2.3 over your existing install which might move things along.

tt2

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iPhone 12 on iTunes High Sierra

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