I upgraded my iPhone 4 when iOS 7 came out. I know the window has closed already that apple approves the signatures or whatever to downgrade and I don't have the shsh blobs (tell you the truth, I don't even know what that means) from any of my previous versions before iOS 7. It's not that I don't like iOS 7 (it's been growing on me), but honestly I want to downgrade because it makes me iPhone 4 super slow now. (Yes, I have enough room/memory/space on my iPhone with over 6 gbs free.) Is there any way at all to downgrade? If not, do you think if I called Apple Care they could help me or let me downgrade? Afterall, iOS 7 wasn't meant for the iPhone 4, it was made for the later versions of the iPhone. I just can't stand my phone being so slow.