3GS remains frozen on apple logo screen
I have been reading forums and stuff from the last 5 hours and nothing became clear to me. I bought iphone on an auction on Ebay running FW 4.3.4 , BB 05.16.02 everything was okay until i tried to install some theme on it , i downloaded it, and the phone rebooted it self after the install, the apple logo came in and it wont continue to the OS.
Can someone please tell me what steps to follow so i can end this nightmare
The Iphone was unlocked and jailbroken when i got it, should i restore it via itunes (when i get into recovery mode, itunes recognizes the phone) , or that will affect the baseband softwere somehow.
Please help me i am really new to this.