iOS 6.1.1 for iPhone 4S - What's New?
According to Apple - This update fixes an issue that could impact cellular performance and reliability for iPhone 4S.
How to upgrade to iOS 6.1.1?
There are two ways to upgrade your iphone 4S to iOS 6.1.1. One is Over The Air (OTA) update. Connect your iPhone 4S to a stable Wi-Fi connection and go to Settings > General > Software Update and tao Download and Install. iOS 6.1.1 will be download and installed on your iphone 4S. The benefit of OTA metod will be that you will have to download only around 86 MB in order to upgrade to iOS 6.1.1.
One thing you should keep in mind that if you are going to jailbreak your iPhone 4S after upgrading, you better not use OTA method as jailbreaks can't work on a device updated through OTA updates. Use the another method.
The second method is to download iOS 6.1.1 IPSW file for iPhone 4S and restore using it in iTunes. To do so, download iOS 6.1.1 IPSW and open iTunes. Press and hold Shift key on Windows or Options key on Mac and click restore button in iTunes. Release Shift or Options key and browse to the IPSW you just download and select it. iTunes will now update your iPhone 4S to iOS 6.1.1. The downside of this method is that you will have to download a large IPSW file weighing around 900 MB but the good thing is that you will not have to download it again if you need to restore again in future.
Where to download iOS 6.1.1 IPSW from?
You can download iOS 6.1.1 IPSW for your iPhone 4S from Blog O'nerd Downloads as usual. Click here to download iOS 6.1.1 IPSW from Blog O'Nerd Downloads using direct link.
Apple recently released iOS 6.1 and just after a few days, evad3rs team released evasi0n jailbreak tool for all devices running on iOS 6 through iOS 6.1. The same jailbreak still works on iOS 6.1.1 too but it needs to be updated in order to recognize iPhone 4S running on iOS 6.1.1. It looks like they will update evasi0n jailbreak soon to work on iOS 6.1.1.
