Downgrade iphone 4s from ios 6.0 to 5.1.1 with no backup (Jailbreak)?

Hi all I just recently upgraded my iphone 4s to ios 6.0 from 5.1.1 then decided I want to jail break it. As I was using a old out of date computer, all my back ups were on that computer to restore it back to 5.1.1, and it has now crashed. Is there any possible way to downgrade from ios 6.0 as I do not have backup?

If you did not back up your SHSH blobs while you were on IOS 5.1.1, then there's no way to downgrade from iso 6 back to 5.1.1. If you have no idea what SHSH blobs are, then chances are you did not back them up. If you were jailbroken on 5.1.1… Then Cydia probably has them backed up.

So to sum it up… If you have no SHSH backups then you can't downgrade. Sorry

If you were jailbroken on 5.1.1 then Cydia has your backup. Use TinyUmbrella to get your SHSH blobs from Cydia.

You can't downgrade sorry.