Apple began distributing the iOS 8.0.1 update early Wednesday morning in an attempt to fix ongoing problems with the new iOS 8 operating system for iPhones and iPads, which was released last week.
iPhone 6 and iPhone 6 Plus users appeared to constitute the majority of users experiencing problem after installing the upgrade.
By the afternoon, Apple had offered users a method to manually reverse the update by downloading a file to restore the old software.
Users are still able to upgrade older phones to last week's version of iOS 8, which Apple said has already been downloaded to nearly half of all iOS devices. The tech giant said it will release iOS 8.0.2 within the next few days to address both last week's glitches and the new ones.
Some tech blogs reported the update only seemed to cause problems for the record-selling latest phone models — the iPhone 6 and 6 Plus, released last week. Apple said on Monday it had already shipped 10 million units of the new phones.
The newly reported software problems came on the same day that social media erupted after a video began circulating allegedly showing the aluminum casing of the iPhone 6 Plus is susceptible to bending. People claimed their phones took on a slight curvature after several hours in pants pockets, particularly among users prone to wearing tight-fitting "skinny jeans."
Apple has not commented on what was being called “bendgate," but the iPhone 6 Plus is longer and thinner than any previously released iPhone model, and the aluminum shell is more malleable those on earlier devices.
Rival smartphone makers have tried to take advantage of Apple's problems. Samsung released an advertisement showcasing a bending phone against its own product, while Blackberry chief executive John Chen said: "I would challenge you guys to bend our Passport."