Who can help me to fix it? I am unable to update my HighSierra. Whenever I try to update to Catalina I receive a mesage saying that my iMac does not support it. And my iTunes a few weeks ago started to not recognize my external devices. I tried many ways but the problem is still there.
iMac 27″, macOS 10.13
For iOS 12 or later 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 likely requires iTunes 12.8.2.3 or better.
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
Thanks for your support. I will try it.
I cannot sync my iPhone and iPad to my iMac because Itunes does not recognize them
