If your iPhone 4s or iPad 2 have been slowing down since upgrading to iOS 8, today's 8.1.1 update is designed to improve performance on those devices. The release isn't as major as the feature-packed 8.1, which delivered Apple Pay to iOS devices, but it will fix a few bugs.
To install the update over the air, plug in your device and go through the standard Settings > General > Software Update routine.
OS X is also getting an update: 10.10.1 is here to fix Wi-Fi issues on Macs running Yosemite. Hundreds of complaints about Yosemite Wi-Fi problems have flooded Apple's support forum since the OS upgrade was released last month. The complaints ranged from spotty connectivity to completely borked Wi-Fi.
To install the OS X upgrade, head on over to the Mac App Store and select Software Update.
Though Wi-Fi is the largest bug 10.10.1 aims to fix, the first update to Yosemite since the OS upgrade was released last month addresses a variety of complaints:
Improves Wi-Fi reliability
Improves reliability when connecting to a Microsoft Exchange server
Resolves an issue that may prevent Mail from sending messages through certain email service providers
Addresses an issue that prevents connecting to remote computers using Back to My Mac
Resolves an issue where sharing services, Notification Center widgets, and Actions may not be available
Addresses an issue that could cause Notification Center settings to not be retained after a restart
Addresses an issue that might prevent the Mac App Store from displaying certain updates
Addresses an issue that might prevent some Mac mini computers from waking from sleep
Resolves an issue that might prevent Time Machine from displaying older backups
Addresses an issue that might prevent entering text in Japanese