iOS 8.1.1 Now Available – Speed Improvements for Older iPhones and iPads
Apple released iOS Version 8.1.1 for the iPhone and iPad today. This is a small incremental update that mainly increases performance on iPhone 4s, iPad 2 and the original iPad Mini. Bug fixes and stability improvements are also promised. You can update your device over-the-air by going to the Settings app, General, and then Software Update (you can also connect your phone to iTunes and do an update through your computer).
I have successfully updated my iPhone 6 Plus without issue. So far there have been no complaints of crashes with this update, but as always, it is recommended that you have a full back-up before performing any update. If you are still using an iPhone 4s or iPad 2, let us know if you notice performance improvements with the new update.