If you pay attention to the jailbreaking scene, you'll be aware that the current state of jailbreak is not a good one. Currently, all A5+ devices cannot be jailbroken on the current iOS version, 6.1.3 or 6.1.4. Apple has stopped signing the iOS 6.1.2 firmware, which is the last firmware compatible with the Evasi0n untethered jailbreak.
The final build of iOS 6.1.3 has made its way to the end-users, with bug fixes and improvements over the prior release. Those who are more interested on customizing their devices by jailbreaking, then there’s both good and bad news. Apple has patched Evasi0n untethered jailbreak exploits for iPhone 5 and other newer devices, as confirmed by the company here. So if you accidently updated to 6.1.3, there is no way for you to untether-jailbreak your device. For never devices, there is no option to downgrade to older firmware either. But if you happen to have A4 powered iOS device, you can tether jailbreak iOS 6.1.3, full details after the jump.
Evasi0n 1.4 has just been released to jailbreak iOS 6.1.2 untethered on iPhone 5, 4S, 4, 3GS, iPod touches, and all other devices. You can download the latest version of Evasi0n from here, and jailbreak using the instructions illustrated below.
Not too long ago, Apple released iOS 6.1 to the public, yet this one was plagued with issues ranging from a lock screen exploit to numerous connectivity problems affecting Microsoft Exchange users. While the recently released iOS 6.1.1 update for the iPhone 4S, which Apple rushed quickly, addressed the critical connectivity issue which stopped many business users from upgrading, this new 6.1.2 release fixes many other small problems that were still left.