iOS 6.1.3 was released last night by Apple and one thing is extremely clear, we cannot do it untethered jailbreak cu evasi0n for him. We can still do tethered jailbreak using redsn0w, again in this tutorial I have explained to you all the steps you must go through to perform this operation. Hackers from Evad3rs they will not release an update for evasi0n in the idea of making the solution of jailbreak compatible with this version a iOS, but from my point of view it is not even worth bothering with an update, because it does not contain important news.
Regarding the restore, I will tell you that ONLY on iPhone 3GS, iPhone 4 or iPod Touch 4G you can revert to old versions of iOS if you have SHSH saved, on the rest of the devices this is impossible, except for iPad 2. In the case of this tablet, you can restore to iOS 5.x ONLY if you have saved SHSHs for iOS 4.x and 5.x, otherwise the procedure is impossible. Practically starting with iOS 6 Apple has completely blocked the possibility of restoring to old versions for terminals launched after the iPad 3 inclusive, and for now there is no hope that a downgrade solution could be launched.
Unfortunately, until the launch iOS 7 we will not see any solution of untethered jailbreak for iDevices, but there is no need for such a thing. The hackers from Evad3rs have prepared exploits based on which they can make a jailbreak solution for iOS 7, all that remains is for Apple to release the new version of the operating system.
