With every firmware release, not only does Apple work to improve the overall user experience, the fruit company also ensures that it patches the exploits found by the jailbreak community. With a new iOS update, expect that it will kill the current jailbreak. As a golden rule for jailbreakers, stay away from any new firmware update from Apple. Unless known jailbreak developers have given the go signal that the firmware is jailbreak-safe. This golden rule is applicable to the newly released iOS 6.1.3 which is confirmed to be not jailbreak-safe.
While iOS 6.1.2 was cleared to be safe for jailbreaking, the same can't be said with iOS 6.1.3. Over at Twitter, MuscleNerd has warned his followers to stay away from iOS 6.1.3. What if I have saved the SHSH blobs for earlier firmware, can't I just downgrade? As it turns out, there is no going back to iOS 6.1.2 jailbreak, even if you have saved the blobs, except for the iPhone 4 and iPod touch 4G. This is because these two are the only iOS 6 supported devices that are vulnerable to the LimeRa1n. Newer devices like the iPhone 4S, iPhone 5, iPad mini, etc. won't be able to downgrade. The iPhone 4 and iPod touch 4G can be jailbroken in iOS 6.1.3, but I doubt many would want to lose their untethered jailbreak.
MuscleNerd also pointed out that Apple has found 4 of the 6 exploits of the Evasi0n jailbreak, enough to put the jailbreak out of commission. All in all, iOS 6.1.2 jailbreak possibly could be the last time that we'll see an untethered solution. With Apple finding most of the vulnerabilities, the Evasi0n team will have to find a whole new set of exploits in order to keep up. Possibly, the next time we'll see an untethered jailbreak is with iOS 7.
STAY AWAY from iOS 6.1.3 if you wish to keep your jailbreak.Contact Us for News Tips, Corrections and Feedback