Can i downgrade my ISO version and then jailbreak my iPhone 4s?

So i want to jailbreak my iphone 4s but i'm running ios 6.1.3 (which there's no jailbreak for yet). And i just wanted to know whether i can just downgrade my ios to 5.1.1 and download the jailbreak for that. Is it that simple or much more complicated?

Unless you haved saved your SHSH blobs then you can't downgrade.

Even if you have shsh blobs they won't help you on A5 devices and up (iphone 4s, 5, ipad 2, 3, 4 mini and ipod touch 5.) because there's something wrong for the A5 devices shsh blobs server. Even if yiu saved them before. They are useless. And eithout them tou can't downgrade. And you can't jailbreak either. Sorry. Hopefully the will release a ios 7 jailbreak really fast this time.

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