: Most Intel wireless cards require the AirportItlwm and IntelBluetoothFirmware kexts. Broadcom cards may require legacy kext injection since Apple slowly phased out native support for older chips in Big Sur. Conclusion

The search term “macOS Big Sur Olarila Top” often leads users to these same resources. The community consistently updates them; for instance, a user in 2022 asked about updating from Big Sur 11.2.3 to Monterey – the advice was to update the bootloader and kexts first, then perform a normal System Update.

Close Disk Utility, select , and follow the on-screen prompts. The system will reboot multiple times during this process. Post-Installation Optimization