Apple launched iOS 6.1 not that long ago and was forced to release iOS 6.1.1 to resolved the issue of cell reception for iPhone 4S users only. It looks like iOS 6.1 was plagued with more issues and Apple is releasing updates to fix them as soon as possible. Now, it has released iOS 6.1.2 for all iOS 6 compatible iDevices with a goal to take care of just one issue:
The OTA update weighs at a measly 12.6 MB but if you want to download the IPSW file, you can find the links here. According to official changelog of the update, there are no security patches or fixes on board which makes evasi0n still effective on the iOS 6.1.2 update and as a matter of fact, evad3rs have released evasi0n 1.4 to deal with any problems that might come in the way.