Downgrade from ios6 to ios4?

Ok,
so a long time ago when I just got my iPhone 4, for a few hours out of a night I jailbroke my iphone and I think it was still under ios4. I did use cydia at the time just checking out the jailbreak and exploring. I decided I didn't like the phone being jailbroken so I restored it back to its factory setting erasing the jail break. I accidentally upgraded my iPhone to ios6 and really don't like it at all. So my question… I don't have an shsh blob saved on my computer at all I don't think for any of my past ios. I don't even really know how to check to see if I do or not… But… I was wondering if because I opened cydia on my phone in the past, cydia cached the shsh blob for me and was wondering if 1. There was any firmaware for ios4 still around I could download, and 2. If there was, is there anyway I could find that shsh blob from way long ago and use that shsh blob to downgrade back to ios4 so my end result would be so I could upgrade to ios5.1.1 and jailbreak my phone now instead of using ios6.also, would it just be easier to wait until a jailbreak for ios6 comes out then spending all this time on trying to get it back to the way it was?

Sadly, you can't downgrade if you don't have SHSH blobs.