Hello all! I thought I could make a small contribution to everyone here at SinfuliPhone.
Well I'm on 5.0.1, let me share my story, and how I managed to fix it. I (as dumb as I was) downloaded H1Siri despite all the reviews saying how bad and glitchy it was.
After downloading it and rebooting, it was stuck on the Apple logo.
Just as I was about to restore the son of a bitch, I opened up Redsn0w and clicked the 'Just Boot' option. I figured I might give it a go.
So, after following the process and the PWNED logo showing up it managed to boot up. It is still untethered and works fine now that I removed the Chinese bullshit I downloaded.
Just thought I'd share. It may work in other cases too!