How to revive or restore a Mac in DFU mode

When DFU recovery applies

Apple describes firmware recovery as an uncommon remedy for Macs with Apple silicon or the Apple T2 Security Chip. It can be relevant after an interrupted installation, an exclamation point in a circle, an unresolved blank screen or a firmware-recovery status-light pattern.

It isn't the first response to every slow app or startup delay. Follow the normal no-power checks, blank-screen steps or Recovery reinstall route for the actual symptom first.

An older Intel Mac without T2 doesn't use this procedure. Check the exact model and Apple's T2 list before choosing a keyboard sequence.

Revive versus restore

Action	Data consequence	When to choose it
Revive Mac	Apple says it doesn't erase the Mac	First firmware-recovery attempt
Restore Mac	Erases the affected Mac and restores factory settings	Only after revive cannot recover it and you accept the data loss

If needed files have no other copy, a restore isn't a harmless next click. Ask Apple about recovery and service options before erasing the only copy. A backup you can actually use matters more than whether a previous backup was merely configured.

What you need

The affected Apple silicon or T2 Mac.
A second, working Mac running macOS 14 or later, connected to power and the internet.
Available space on the working Mac for the recovery download; Apple says 32 GB should be more than enough.
A USB-C to USB-C cable supporting data and charging. Apple specifically says not to use a Thunderbolt 3 cable.

The current Apple procedure uses Finder. Older instructions requiring Apple Configurator aren't the workflow described here. The host may ask for a software update if it is older than the system involved in recovery.

Connect directly between Macs. Use the affected Mac's specified DFU port, not a hub or whichever connector is easiest to reach. Keep other USB connections off the affected Mac except power when needed; use MagSafe for a laptop's power if available.

Find the exact DFU port

Apple's DFU-port table is model-specific. “Always the left port” is outdated advice. Directions below mean when you face the indicated side, not while looking down at the keyboard.

Air introduced in 2025 or later: rightmost USB-C port facing its left side; earlier Apple silicon Air uses leftmost.
14-inch Pro with base M4 or M5: rightmost facing its left side. Other Apple silicon Pro models use leftmost.
T2 laptops: rightmost facing their left side.
Neo: leftmost facing its left side.
Apple silicon mini introduced in 2025 or later: middle USB-C port facing the back; earlier models use leftmost at the back.

For iMac, Studio, Pro towers or racks and other model details, follow Apple's table and illustrations. The DFU connector looks like an ordinary USB-C port; it doesn't carry a special external DFU label.

Put a laptop into DFU mode

Connect both Macs to power, the correct DFU port on the affected laptop and any USB-C port on the host. Keep the host on and online. Use the affected laptop's built-in keyboard.

Hold its power button for up to 10 seconds until it turns off.
Press and release power, then immediately hold left Control + left Option + right Shift + power.
Apple silicon: hold all four for about 10 seconds, release the three keys, then keep power held for up to 10 more seconds until Finder shows DFU.
T2: hold all four for about 3 seconds until Finder shows DFU.

If the host asks to allow the accessory, release the held keys as Apple's instructions specify and choose Allow. A blank screen on the affected Mac is expected in DFU. Use the host's Finder window to confirm detection.

Put a desktop into DFU mode

Connect the cable to the affected desktop's exact DFU port and to the powered, online host. Leave the affected desktop's other USB ports empty.

Unplug the affected desktop's power. Hold its power button while reconnecting its power, then continue holding for up to 10 seconds until Finder shows DFU. Release when an accessory-approval alert appears and allow it on the host.

Choose Revive Mac first

In Finder on the host, select Mac under Locations. The right side should say Mac DFU Mode. Choose Revive Mac › Continue. Keep the host awake and both connections undisturbed until it completes.

The affected Mac normally restarts. Follow any volume-recovery, login or startup-disk prompts on that Mac. A revive preserves data by design, but this article isn't a guarantee that existing damaged storage or files are recoverable.

Restore only if the data loss is acceptable

If revive fails and you choose to erase, Finder offers Restore Mac › Restore and Update. Keep the host awake until completion. Follow network and setup prompts afterward; Activation Lock can require the Apple Account previously associated with the Mac.

Apple silicon proceeds to setup. A T2 Mac can enter Internet Recovery and require macOS installation before setup. Follow the onscreen path for the actual model. Preparing a Mac for transfer is a separate task from repairing its firmware.

If Finder doesn't detect DFU

In Finder › Settings › Sidebar, enable CDs, DVDs, and iOS Devices, then check Locations for Mac. Recheck the affected model's DFU port, cable support and direct connection. Turn the affected Mac off before retrying the documented timing.

Try a suitable different cable if needed. If detection or recovery still fails, contact Apple with the model and observed result. No firmware revive, restore or DFU-entry test was performed for this guide.

Questions

Does reviving a Mac erase it?

Apple says a revive does not erase the Mac and recommends trying it first. A restore is different: it erases the affected Mac and restores factory settings.

Do I need Apple Configurator for DFU recovery?

Apple’s current consumer instructions use Finder on another Mac running macOS 14 or later. Follow that current procedure rather than assuming older Configurator steps are required.

Which cable works for Mac DFU mode?

Apple specifies a USB-C to USB-C cable supporting both data and charging, connected directly between the Macs, and says not to use a Thunderbolt 3 cable.

Is a blank screen normal in DFU mode?

Yes. Confirm detection in Finder on the other Mac, where Mac DFU Mode should appear. A blank affected screen alone does not confirm the connection succeeded.