PSP: 3008 Unbricking Fail

I tried using Pandora Battery & Magic Memory Stick to unbrick the system of my PSP 3008 Brite because I'm a noob at stylish backgrounds on my XMB; the CAUSE of my SEMI-BRICKING is that: I tried to change the XMB Waves.. Anybody there knows how to unbrick a PSP 3000,3004,3008,etc..(SLIM)? Or if not, I'll put it to Sony or the Repair Shop next to me.. :( This is the video that I think could help me: http://www.youtube.com/watch?v=D0Ep9EUkjvw&feature=related