Why do I have FlashStatusBar service FC?
Most probably because you have installed a mod (transparent for example), the solution would be to use any root capable file manager, and go to data/data and delete the folder named com.sec.android.app.FlashBarService, reboot then try again.
Okay, what if I want to install this mod on a supported, but odexed
Install the framework files, then use a root capable file manager, and go to /system/app and delete FlashBarService.odex. Then go to /system/framework and delete services.odex as well, and that's it.
NOTE: I have tried this personally, and it worked for me. But many users are reporting that they are stuck at Samsung logo. So try at your own risk, and make sure to backup.
Note: I am not responsible for any action that you make using this mod, or anything that happens to your phone! But I'll be happy to help.