MappleCare Community
Reply To: Diagnostic query: Unexpected kernel panic on macOS Sequoia 15.1 after waking (1794658911)
Find answers from other Apple users or start a discussion about your device.
Home › Forums › MacBook, iMac & macOS Lab › Diagnostic query: Unexpected kernel panic on macOS Sequoia 15.1 after waking (1794658911) › Reply To: Diagnostic query: Unexpected kernel panic on macOS Sequoia 15.1 after waking (1794658911)
Sarah MitchellThe AppleThunderboltNHI assertion strongly indicates a Thunderbolt controller (NHI) firmware desync or a BridgeOS/iBridge mismatch introduced by the 15.1 point release. Boot into macOS Recovery (⌘R) and run system_profiler SPThunderboltDataType to verify the controller firmware version against Apple’s latest ThunderboltFirmware package for your specific Mac model; if outdated, apply the standalone firmware updater via bless --mount / --setBoot --nextonly /path/to/ThunderboltFirmware.pkg. Simultaneously, capture ioreg -l -w0 | grep -e "AppleThunderboltNHI" -e "IOThunderbolt" in normal boot to check for NHI assertion flags (kIOThunderboltAssertionTypePower) stuck high, which confirms the controller failed to relinquish the power domain during wake.