Iphone 4 stuck on Apple Logo. Read Description?

It's already been Jailbroken for some months now. I was trying to reboot it and now it is stuck on the Apple Logo. It won't connect to Itunes either. When trying to hard reboot it it showed the battery icon that showed it needed to be charged But when i plugged it up it and let it sit for about 30 minutes it was still on the apple logo. Anyone know what to do?

Added (1). It WON't connect to Itunes

Call Apple

Ask apple just turn it off while you can get a professional to try to fix it.

Its most likely bricked (over loaded with memory)

That happened to me and the video helped me

Restore in itunes and start over.

Ok use ireb then itunes will reconize it and restore.
apple won't do anything since its been jailbroken.

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