Apple's MacBook Pro DFU port documentation is wrong
3 days ago
- #macOS
- #Apple Silicon
- #DFU Port
- The DFU port location for MacBook Pro models with Apple silicon is incorrectly specified in Apple's support document.
- For a 16-inch MacBook Pro with an M4 Pro chip, the DFU port is the rightmost USB-C port, not the leftmost as stated.
- Installing or updating macOS on an external disk requires plugging the device into any compatible port except the DFU port.
- Failed macOS updates on an external disk were resolved by changing the USB-C port used, from the right (DFU port) to the left.
- Software Update processes proceeded without error messages but failed silently when using the DFU port.
- Adjusting the security policy for the external drive via Startup Security Utility was necessary but insufficient alone for successful updates.
- macOS updates on external disks are sensitive to the specific USB-C port used, a detail not clearly communicated by the system.