sek300 , first up, never ever flash in another person's firmware unless your player is dead and you are performing dead player recovery. You are more likely to kill your player straight.
There are no significant benefits in newer versions, but if you want to try something new, i'll suggest that you theme your firmware instead.
The full guide is
Here, from extraction to modification to flashing. Always remember to use your own extracted & repaired firmware for theme modification.