W580i dead

Pls i have a problem with my phone. My cousin downloaded a software D-ultimate unlocker. He tried it on my W580i phone after that it didnt on again. I have tried flashing it but still wouldnt come on. Please anyone who has a solution should reply.tanx

pls help..

check if battery is o.k, and remember to always reinsert battery after every perform

it is not working still i hv tried that .he doent hv the password and username

Read here : XS++ 3.1 Guide-Flashing, Customizing, Recovering - Top Sony Forums
or here : Flash your phone and How to apply or remove patch using SETool 2 Lite - Top Sony Forums