How to Fix iPhone / iOS Devices Not Recognized on USB after macOS Tahoe Update
If your iPhone charges and shows up in System Information, but is not recognized by Finder, Xcode, or Apple Music after upgrading your Hackintosh (like the Dell XPS 15 9560) to macOS Tahoe, it is usually a USB connector mapping or trust cache mismatch.
1. Reset iPhone Trust Settings
Upgrading to a new macOS major version can corrupt the local pairing cryptographic certificates.
- Disconnect your iPhone from the laptop.
- On the iPhone, go to
Settings -> General -> Transfer or Reset iPhone -> Reset -> Reset Location & Privacy. - Reconnect the iPhone to a USB port. A "Trust This Computer?" popup should appear. Tap Trust and enter your passcode.
2. Fix USB Port Connector Types (USBToolbox)
macOS Sequoia/Tahoe has stricter requirements for USB connector classifications. If a port is mapped incorrectly, Apple's mobile device service will refuse to connect.
- Open your USB map (UTBMap.kext or USBPorts.kext).
- Ensure USB 3.0 ports are mapped as type 3 (USB3 Standard-A).
- Ensure Type-C ports are mapped as type 9 (Type-C with switch) or 10 (Type-C without switch).
- Verify that USB Companion ports are mapped correctly. Incorrect maps will power devices but fail data handshake.
3. Restart Apple Mobile Device Service (AMDS)
- Open Terminal and restart the mobile device daemon:
sudo launchctl kickstart -k system/com.apple.usbmuxd - Open Finder and check if the device appears in the sidebar.
Original Question: "Can't see iOS devices on USB after moving to Tahoe"
Can't see iOS devices on USB after moving to Tahoe
I upgraded from Sequoia to Tahoe (26.5.1) and everything is working well, except the laptop doesn't see my iPhone.
* iPhone is 6S running 15.8.8, which should be fine.
* The phone charges and turns up in System Information.
* I have mapped the USB ports using USBToolbox and UTBMap.
* Android phones and other USB devices are recognised.
* The laptop is a Dell XPS 15 9560.
Has anyone else come across this behaviour? The phone was connecting well on Sequoia
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