Failed to reinstall macOS Big Sur on an M1 Mac Entering DFU mode is necessary only in the following situations: It is very rare that you have to enter a DFU mode to fix issues because a plenty of recovery and troubleshooting tools are available in standard Mac Recovery Mode. Since the macOS is not running, you can add slight changes and fix bugs to it, restoring your Mac to a workable state. It is a state your Mac can enter without loading the operating system. How to boot an Intel Mac into DFU mode (T2 & M1 Mac Included)ĭFU mode stands for Device Firmware Update mode. ![]() If you have exhausted a series of checks and fixes but still cannot get your Mac to function normally, you can boot your Mac in DFU mode to revive or restore a Mac. ![]() Sometimes your Mac runs into issues, requiring your device to be reset or restored.
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