So I bought myself a Acekard from RealHotStuff, and i ordered a memory card with it, and in the website it said it was compatible with firmware 1.4, I dont get it, is it the memory card thats updated or the Acekard itself?

Thanks!!

 

So it will be safe for me to automatically put a game ROM("which I bought") files in it? right?

 

Not necessarily - you assume too much (and as the saying goes "To assume is to make an Ass out of U and Me").
There are people out there that genuinely do only use flashcards for backups and homebrew.