Downgrade to 3.1.2 shsh gone?

[Famousrabbit]

I have an iphone 3g on 4.0.1 and I want downgrade to 3.1.2

When I go into cydia it says I have 4.0 4.0.1 4.2 4.2.1 etc.
all the 4.whatever softwares
But no 3.0 softwares ?

But the thing is I use to have 3.0 3.1.2 3.1.3 shsh showing up on cydia? :S
I guarnatee it
And I click make my life easier the very first day it came out!!

I dont understand why i cant get my shsh

[Simon]

It's because you dont need SHSH for firmware lower than 4.0 on iPhone 3G. You can always downgrade to those.