@trezegol No need to contact anybody, simply post a solution otherwise go to sales section! Sick and tired of all these "contact me" posts... just sayin'...
Anyway to make PingPong root work on AOF4 is to flash the AOE2 boot file in Odin's AP tab. Simply extract "boot.img" from the stock tar and repack it into tar. Note that it will not work if you have already upgraded higher than OAF4
There you have it nice and simple.
http://d-h.st/w7V6