Originally Posted by Jamison R
What does it update? Mine works fine. Maybe mine is already updated. I ordered it from Rcmarket.hk
Its said is a wireless communication update "Improves wireless communication quality."
Go to "System Menu" then "Information"
I just got my 4PX and it's firmware is ver 1.0 E. The update is ver 1.1 so I'll update it when I get a chance.