IOS 7 to iOS 6.0.1 to 6.1.2?

Ok, so I was planning on updating my iPhone 4S to iOS 7 play play around with it, but I researched online that you can only restore your iPhone to 6.1.3. I have a jailbroken device its iOS is 6.1.2 and I read that apple stopped signing rollbacks from 6.1.3 - 6.1.2 but they are still signing iOS 6.0.1 - 6.0.2. Can I update to iOS 7, downgrade to 6.1.3 then to 6.0.1 and then back to my 6.1.2 jailbreak using my shsh blobs?

Currently shsh blobs downgrade method is only work for older devices like 4 3gs. ( A4 chipset and older ) and 4s and up just impossible! There will be a breakthrough soon

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