How to disable the stuck FN key in Mac OS X?

Question

macOS

The Fn key in the macbook broke, and to completely upset it, it sunk. That is, the backspace does not work for me adequately and arrow-keys. How can I disable the Fn key in the system at all? I looked through a lot of materials - I did not find anything. KeyRemapper4macbook does not want to work with a permanently stuck key. Help a.

Answer 1

Download Karabiner
And live a happy life.
I understand, of course, that the answer is not very timely, but it works.

Answer 2

No way. MacBook keyboards are practically unrepairable. And they change - only together with the lid and the touchpad (the upper case is called the whole assembly).