Hi. A few days ago, I rooted my Galaxy Gio with an SD Card file that I downloaded (the file was something like Bell___.zip). It worked perfect until yesterday, when I downloaded an app called CPU Tuner from Google Play. After setting it to a battery-saving CPU, it started to lag my whole system. The screen froze and alot of applications forced close when I tried to open them. I decided to reboot my system, however after turning off my phone and taking out the battery (inserting after), it got stuck on the Galaxy Gio boot screen. I kept on trying to boot it, even wiping cache in recovery mode did not do anything. Is there any way I can fix this problem without having to factory reset? (And yes, my phone was fully charged)