Apple unexpectedly released iOS 6.1.4 firmware. But this is only an update specifically for the iPhone 5, size is only 11.5 MB. According the updates description, iOS 6.1.4 only updated audio profile for speakerphone. iPhone 5 users will find the update prompt once the device connected to the computer, go to Settings -> General -> Software Update to search download, GSM and CDMA version of the iPhone 5 all applicable.
How to update iPhone 5 to iOS 6.1.4
Update iOS 6.1.4 with OTA for iPhone 5 or directly download the full sized 6.1.4 IPSW firmware file from the download link below.
Note: Jailbreakers should stay away from iOS 6.1.4 IPSW, as it will not work with evasi0n.
Apparently, iOS 6.1.4 is available for iPhone 5 only. For such minor changes, we don’t see any reason why one would want to install it.
Before this, Apple had pushed iOS 6.1.3 fixing the Evasi0n jailbreak and lock screen vulnerability. Presumably, this is the last update until we see all new iOS 7 at WWDC 2013. Apple is all set to unveil iOS 7 at WWDC 2013 which is speculated to bring more customization features and design changes.
Download iOS 6.1.4
Download iOS 6.1.4 for iPhone 5 (GSM)
Download iOS 6.1.4 for iPhone 5 (CDMA)