Apple's documentation for identifying the DFU port on MacBook Pro models is incorrect, according to a recent report. The documentation incorrectly states the DFU port location for M4 and M5 chip models. This error can cause issues when updating macOS on external disks, leading to failed installations and frustrating troubleshooting experiences for users.

The incorrect port identification stems from the USB-C port used for DFU, which is vital during macOS updates. The post details how the user struggled to update macOS on an external SSD due to the port confusion. This led to multiple failed attempts before realizing the port location was the root cause.

The issue highlights problems with Apple's support documentation and the complexity of macOS update processes. The article references similar experiences, including a workaround involving the Startup Disk utility. Ultimately, the user found the correct port, and the update succeeded.

This incident underscores the importance of accurate documentation for technical processes. Apple has a history of changing port configurations, so keeping documentation up-to-date is essential. Users should double-check port specifics during critical system operations, to avoid wasted time.