Some time ago, Apple released iOS 6.1 to its users but this was giving teething issues like lock screen exploit and several other connectivity problems that affected users of Microsoft Exchange. The recently released iOS 6.1.1, iPhone 4S update, has given the critical connectivity issues which has made many business users reluctant to upgrade however, the new release of iOS 6.1.2 has solved out the small problems that were being left.
As compared to iOS 6, the iOS 6.1 has included few new additions and minor changes. These changes include, Music app was updated that introduced new and more polished controls, some improvements to Siri, LTE "4G" supporting in African, Asian, American and European countries, and last but not the least, minor changes to initial setup wizard. Few weeks later this release was followed by iOS 6.1.1 for iPhone 4S but it gave a serious flaw in network connectivity.
A critical exploit was eventually discovered that allowed some unintended users to enter any iPhone passcode protected lock screen and by spending a few seconds they can interfering with Emergency Call feature. This is not easy to handle if happens accidentally as this vulnerability could let the unintended user have an access to the contacts of unsuspected user. This type of bug is reportedly found in iPhones having iOS 6.1.2. It needed to be controlled before all the prank calls are played all over the world involving unsuspecting contacts being saved on the victim's phone.
Besides this, with the release of iOS 6.1.2 an Exchange bug has also been addressed. Below is the image that shows official change log.Download iOS 6.1.2 for iPhone, iPad, iPod touch [Direct Links]
It is better to update you device as soon as possible due to the issues being given by iOS 6.1 and 6.1.1. You can update either using OTA update or via iTunes directly from your iPhone, iPod touch or iPad. Be careful of updating it if you have jailbroken your device as it is still not confirmed whether Apple is supporting evasi0n jailbreak in this release. Following are the direct links to help you to download files. Just select the correct IPSW file that your device requires:Download iOS 6.1.2