You have this problem? Jelly Bean XXLSA stuck on boot. Stuck at Samsung Logo?
Don't Panic. This is what you need to do.
1. Reboot Recovery with 3 button (Home + Volumne UP + Power Button)
2. Backup. You have to wait for this......5-10minutes
3. Restore back. You have to wait again
4. Reboot System Now
After this process, hopefully you will not stuck at the boot screen any more.