Mac Pro 2014 login issue: Unknown firmware password

This is some of Apple"s guidance on firmware passwords:

Set a firmware password on your Mac - Apple Support

The bottom line is this:

❝If you forgot the firmware password

If you can't remember your firmware password, schedule an in-person service appointment with an Apple Store or Apple Authorized Service Provider. Bring your Mac and its original receipt or invoice as proof of purchase.❞ - Apple Support

Be careful making duplicate posts. You will likely find that one or the other may be deleted along with any of the answers that were provided on that post. If you have additional information to provide or want to communicate further, please refer to your other post.

Unable to login to my Mac Pro 2014 withou… - Apple Community