i need old version of lumines

when i get these i can use my old battery and magic stick right, i mean when im like done using them

http://cgi.ebay.com/Pandora-Battery-and ... dZViewItem
is that a good deal?

should i buy it?

and with this i can both downgrade and up grade to anything and dont need anything else? and after im done i can go back to old memory and battery

one more thing, will if im using magic memory stick to downgrade, how will it be on my other memory stick?? Does that mean my 2gb memory stick is useless if i want to downgrade?

and since that one ended can someone find me another good deal please?
sorry guys im a noob

Yes all you need is the Pandora's Battery and Magic Memory Stick and you're set.
You don't need to mess with your old mem stick and battery if you have extras.
Once you downgrade with the magic memory stick, you can put in your other memory stick,
but you won't need the regular mem stick untill you finish downgrading. I don't get what you mean when you said
"does that mean my 2g memory stick is useless?"

i ment if i downgrade it would be on my magic stick memory card instead of my 2gb one which means i couldnt use 2gb for cfw??? Or is it jsut for the psp and when i downgrade and then get cfw i can put in my old battery and memory and it will still be cfw

and please find me a good deal online, or if anyone can make me one