Iphone broken? Stuck on update screen?

So I jailbroke my phone which was a massive mistake, so I tried to delete it in everypossable way, but none of them worked, so after about 2 months into hell, I just tried to clear my phone with "find my iphone" so I clicked clear, and I just waited and waited, nothing happened, then I let it sit all night, when I woke up, hasn't loaded a bit. Waited until after school, still nothing. Now i'm sitting here waiting for what seems to be nothing.

Just for future reference. When you don't want your phone jailbroken, put it in DFU mode and restore in iTunes. When you jailbreak, part of the system is modified, which causes the screen you see.

What exactly happened to your phone?