is there a way to change the keyboard fn to be default function keys

Hold the Fn button and press the CapsLock. It works.

Greetings,

*Moderator Update*

You can enable FN Lock by holding FN + CAPS for a few seconds.

you can toogle the functions of the keys by pressing

FN (right of space)

left shift - lock (the key with the "A"  in a square and the lock-symbol)

pressing them together for about 1 second toogles the funktions of the keys from search to F5 and back

Ralf

This has been answered in a couple other threads but apparently the answer doesn't work for everyone.  Still, it's worth trying:

Try key combination CAPLOCK (hold down) + Fn.  You'll hear a click when you first hit the Caplock, but nothing when tapping the Fn key.  That should toggle the top row of keys to now perform the Function as the default, and Fn + (key) will then do the indicated operation.  I just retested mine and for example the search (magnifying glass) will do a browser page reload (F5).

The CAPLOCK+Fn toggle seems to stick around thru a restart as well, but might be reset by removing and reattaching the touch keyboard. 

Hope this helps - if it works for you please mark as an answer for others.