Apple reissues iPhone software update to fix critical security flaw ahead of iOS 18 launch

Apple reissued an iOS 17.6.1 update for eligible iPhones to fix a major security flaw that was introduced in the first version. Every iPhone user on the previous version should immediately install the re-released version of iOS 17.6.1 with a different build number (21G101).

iOS 17.6.1 was first issued on August 7. Days later, Apple identified a significant security flaw and released an updated version of the same software patch on Monday.