How to Downgrade a 2.71 ,2.7. 2.6 , 2.5 or lower psp to 1.5

I have personally tried this downgrader 5 times and all resulting in a complete success. I do not guarantee you that you shall be successful as me . Please try this AT YOUR OWN RISK. I will give you 99% success chance if you do EXACTLY WHAT I SAY. But I say let's get it done , it worked for me 5 times and I doubt you will have any problems (hopefully) if you do what i say: D (trust me).NOTE: If