about psp v 1.5 or OE-a?

Question

pls give me your information about :-

1. psp v1.5
- y shoud i have this v on my psp?
- if there is risk to do that ? than y shoud i do this???

2.psp v OE-A
- y shoud i have this v on my psp?
- if there is risk to do that ? than y shoud i do this???

and any 3 good different in v1.5 & OE-a
and any 3 bat different in v1.5 & OE-a

thank u all

Answer 1

If you want to use Homebrew games and apps then you need 1.5 or OE. You can go here for more info - http://www.psp-hacks.com/forums