alt Hacker NewsI have dealt with M1 Max and M4 Max MacBook Pros DFU mode many times[1], and the documentation is accurate. The primary DFU port is definitely what Apple says. I don't know, other ports may or may not exhibit DFU-like capabilities also; if so that would be unsupported and does not change correctness of Apple documentation.
UPDATE: nevermind--removed a paragraph as it does not appear the root cause is which port is DFU, but a misunderstanding of the DFU process by the blogpost.
[1]: at least once per every iOS/macOS device I have purchased to protect against software supply chain attacks when you receive a laptop in mail. DFU-restoring Apple software ensures that the OS you run is not tampered with as long as there is no bootrom exploit or hardware modification.
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The author followed the "all other MacBooks" case, but it appears that their Mac (a 16-inch model) also has it on the other side than the instructions claim.
> it does not appear the root cause is which port is DFU, but a misunderstanding of the DFU process by the blogpost.
The blog post does not even discuss the DFU process.
Isn't the OS untampered so long as booting into rescue mode > startup security shows it to be in sealed/verified mode?