Karabiner (was KeyRemap4MacBook) is an awesome utility for keyboard customization on OS X.
- You can re-map any key without any restriction.
- You can accelerate speed of the key repeat.
The fn keypad has been removed from Implicit behavior. Please use either of the following settings instead if you need.
"Fn+Number to KeyPad"
"Use old style fn keypad"
New functions and improvements