Does anyone know where to buy a PS4 Pro on 5.05 or lower in Australia？

I'm looking for a PS4 Pro on firmware 5.05 or lower,by the way,i'm in Melbourne at the moment。
there is no PS4 Pro on sale in the Days of Play in Australia！
Does anyone happened to know where can i find a PS4 Pro on 5.05 or 4.xx？
I know EBgame,Gamesmen,BigW in stock, but i can't confirm firmware!
THANKS