Killed My Phone

Installed this app hoping for a good equalizer solution... Well, I tried it out fiddled around with it for a little while, everything seemed okay. Then the app froze, then everything else froze, I couldnt get my phone into restore mode. I had to remove the back panel, pull out the battery, and then the phone reset. Now I cant even get a new iOS on it... Thanks a lot guys, whatever this app is/does. It cost me $803.00

J_P2898 about Equalizer Pro, v1.0.3