Putting an Apple Silicon Mac into DFU mode — key combination and method

The key combination to put an Apple silicon Mac into DFU mode — with reliable timing, the correct port, battery notes, and the restore logs for Revive and Restore.

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DFU mode (Device Firmware Update) is the prerequisite for any Revive or Restore of an Apple silicon Mac. Unlike recovery mode, the device shows no image while in DFU — no Apple logo, no display, and on MagSafe no charging LED either. The screen stays fully black; that is normal and not a fault.

Since macOS Sonoma, Apple Configurator is no longer required

As of macOS Sonoma (14), a Mac in DFU mode can be revived or restored directly from the Finder on a second Mac — Apple Configurator 2 is no longer needed. The host detects the DFU-mode device and shows Revive Mac and Restore Mac buttons in Finder. Configurator still works, but is only needed for older host systems or batch workflows.

Requirements

A second Mac (host) running macOS Sonoma 14 or later for the Finder method (or Apple Configurator 2 on older systems).
A USB-C cable that supports data and charging (e.g. the Apple USB-C Charge Cable) — not a Thunderbolt 3 cable, and not a charge-only cable.
A connection to the correct DFU port on the target (see below).
The target must have some charge (see the battery note below).

The key combination and timing

On Apple silicon MacBooks you use three keys plus the power button (Touch ID):

DFU key positions: left Control and Option, right Shift, and the power/Touch ID button at the top right

Left Control (⌃)
Left Option (⌥)
Right Shift (⇧)
Power button (Touch ID, top right)

Sequence:

Shut the device down completely.
Press Power + left Control + left Option + right Shift at the same time and hold for exactly 10 seconds (count it out deliberately).
After exactly 10 seconds, release the three keys — but keep holding the power button.
Keep holding power for another ~5–10 seconds, until the large DFU window appears on the host.
Only then release the power button.

Precise timing is critical (Mr. Macintosh's method)

The reliable, counted 10-second method comes from Mac admin Mr. Macintosh and hits a near-100% success rate in practice. Apple’s own note only says a vague “about 10 seconds” — the real trick is counting precisely instead of estimating. If no DFU window appears within ~20 seconds total, stop and start over.

Full walkthrough with screenshots: Restore macOS Firmware on an Apple Silicon Mac + Boot to DFU Mode — mrmacintosh.com

Which port?

Only one specific port on the target is the DFU port. On the wrong port no DFU window appears, no matter how clean your timing is. The location depends on the model and changed on the 2025 models — Apple describes each position “facing the left side of the Mac,” i.e. among the USB-C ports on the left side of the device:

MacBook Air up to 2024 / most MacBook Pro: the front of the two left-side ports (Apple: “the leftmost USB-C port when facing the left side”).
MacBook Air 2025 and later, and the 14" base-M4/M5 MacBook Pro: the other of the two left-side ports (Apple: “the rightmost USB-C port when facing the left side”) — not the right side of the device, but the second left-side port.

Apple lists the exact position per model: Identify the DFU port — support.apple.com.

When in doubt, switch ports

If no DFU window appears after a clean 10-second attempt, the port is usually just wrong — use the other port on the device and try again. It must be a USB-C data-and-charge cable, not a charge-only cable and not a Thunderbolt 3 cable.

The battery must be charged — and the “pre-SMC” trick

A Revive or Restore won’t work on a completely empty battery — the device needs some charge. It gets tricky when a device is stuck in the pre-SMC state: it won’t charge from the cable at all and looks “dead.”

The way out: start a Revive anyway. Even if the Revive fails on a timeout, the device loads a RAMDisk with a working SMC component during the attempt, which lets the Mac charge again. Then leave it on the cable, let it charge a bit, and try the Revive again — now with enough charge.

Detailed logs in Console (Console.app)

When the Revive/Restore is run from the Finder, macOS writes a very detailed log on the host. The whole process can be followed live and reviewed afterwards in Console (Console.app).

These logs are invaluable for proper diagnosis: they show exactly which phase a job fails in — firmware write, the transition step, or a USB problem — and give the specific error code (e.g. the 4042 error in the transition step). Without these logs a restore is guesswork; with them you can decide deliberately whether a Revive, a different IPSW, or a hardware fix is needed.

Technical DFU without a working keyboard (jumper method)

If the device can’t be put into DFU from the keyboard — a dead keyboard, a disconnected top case, or a bare logic board on the bench — the FORCE_DFU signal can be triggered on the board directly. The signal is pulled to the correct rail (PP1V25 / 1.25 V); on most boards the pull-up resistor is not populated, so you have to work from the schematic. This method works with no keyboard at all and is far more reliable in day-to-day repair.

Board-specific jumper points and schematic notes: DFU Mode Restore (Macs) — logi.wiki

Revive vs. Restore

Once the DFU window appears, two actions are offered:

Revive — reinstalls firmware and recoveryOS only. User data is preserved. First choice for firmware trouble after an update.
Restore — erases the whole device and reinstalls from scratch. All data is lost. Only when the device is meant to be wiped anyway.

A practical Revive case study: MacBook update problems after macOS 26.4.1 (DFU error 4042).