Apple has released iOS 8.1.1 to iPhones and iPads, its fourth update for the mobile operating system, as well as a number of fixes and tweaks for Yosemite.
The 64.1MB iOS update promises improvements to some of Apple's older hardware, and fixes significant problems including software instability, battery drain, increased handset temperature and sluggish performance.
"This release includes bug fixes, increased stability and performance improvements for iPad 2 and iPhone 4S," Apple said.
The update also addresses a privacy issue whereby browsing data may remain in the cache following deletion, and threats to do with the handling of executable code on the iPhone 4S and upwards, and the iPad 2 and later.
Other security updates fix an occasional problem where the lockscreen does not limit failed password attempts, along with a flaw in WebKit that could let maliciously coded websites execute code on a handset.
Yosemite has also been updated, to v10.10.1, tackling the same web caching issue and WebKit code exploit as above.
Macbook and iMac users had reported difficulties connecting to certain WiFi services, while others suffered lengthy loading times and unstable connections.
Apple claims that the problems are resolved in OS X 10.10.1, but explained only that the update contains "WiFi stability improvements".
Apple said in the release information that the update should solve a number of reliability issues, including those associated with WiFi, remote connection with other machines, and interaction with rival email providers.
These suggest benefits for the enterprise user, an area in which Apple is investing heavily.
Cotton seedling freezes to death as Chang'e-4 shuts down for the Moon's 14-day lunar night
Fortnite easily out-earns PUBG, Assassin's Creed Odyssey and Red Dead Redemption 2 in 2018
Meteor showers as a service will be visible for about 100 kilometres in all directions
Saturn's rings only formed in the past 100 million years, suggests analysis of Cassini space probe data
New findings contradict conventional belief that Saturn's rings were formed along with the planet about 4.5 billion years ago