ok so i wanna downgrade my iphone 3gs to its original 4.3.3 and i never saved the shsh blobs so ya i wanna know a easy step by step toutaral on how to downgrade it back to 4.3.3 when its running on 6.1.2 right now without shsh blobs i just want it downgraded so any help plzzzz!!! no hard step ny steps plz or technical talk just simple