Multiple iPhone 4S users started reporting that after upgrading their phones, they experienced 3G issues and decreased battery life. Further the upgrade broke the evasi0n compatibility even though iOS 6.1.1 wasn’t meant to patch the vulnerabilities exploited by the jailbreak.
Evad3rs announced the availability of a new version of evasi0n that supported iOS 6.1.1 on iPhone 4S. Announcing the release evad3rs tweeted, “evasi0n 1.3 with support for iOS 6.1.1 on iPhone 4S has been released on http://evasi0n.com”. Evad3rs have warned that users shouldn’t go for over the air update (OTA) as the jailbreak wouldn’t work on devices which have been upgraded through this method.
According to some estimates, evasi0n has been used to jailbreak over 7 million iOS devices. The jailbreak was released on February 4 and just days later was upgraded to fix two persistent bugs whereby the previous jailbreak lead to long reboot times and breaking of the default weather app.