Apple provides this evening a small update for the iPhone 5, iOS 6.1.4. The change-log is very short: Audio profile updated to the speaker. Other devices do not seem to be affected at this time. Apple has had some problems with early versions of iOS 6.1, which forced Apple to release a dedicated fix.
Apple is not talkative for change today. The update weighs 18.3 MB and can be retrieved directly from your iPhone 5. Otherwise, you can go through iTunes. The complete firmware weighs 1.04 GB and can be downloaded from Apple’s servers.