Pandora questions.

Okay, I've finally gotten around to creating a Pandora, thanks to this tutorial. I've created one mainly for going back to 1.5 (and then onto my CF of choice) incase I don't like the firmware I update to, and for unbricking - just incase. My question is, I've completed the Making the Pandoras Battery and Magic Memory stick part, do I need to go on and complete the Modifying the Memory Stick Files to Work as an Unbricker step ? If I left it, what could it do currently ? If I modified it to work as an unbricker, then what can it do ? As in, if I done the unbricker step, would I be adding to it's features, or am I replacing them so it's now just an unbricker ? Hope you get what I'm on about...

Lastly, would my Pandora & Magic Memory stick work on someone else's PSP ? Thanks.

The "Unbricker step", is to change the firmware you're installing, instead of 1.50 it will install 3.71M33-2

You can leave it like that, and it will install 1.50 FW
It will work as an unbricker, just not for a PSP slim

and yes, you can use it on someone else's phat psp

Thanks for the answers Mike. :)