Bundled applications like Safari remained locked to version 16.6.
This update arrived exactly three weeks after its predecessor, macOS 13.5, to resolve a single, highly disruptive bug. It serves as an essential case study in how minor software regressions can impact user privacy and device workflows. The Genesis of macOS 13.5.1
No changes were made to system firmware or the iBoot loader for Apple Silicon Macs. Similarly, Intel machines equipped with Apple T2 Security Chips received no BridgeOS modifications.