SSparrow

So my keyboard has switched the WASD keys for the arrow keys twice now. The WASD keys now just move the cursor and the Arrow keys now type WASD. I've solved this by hitting M2, M3 which switch to the next keyboard memory but that won't work a 3rd time. I've read online that FN + W would fix it but it does for me. Does anyone know the keys for a Challenger Prime to change these keys? Thanks in advance!