About This Firmware
macOS 27.2
(build 26B123) is an official Apple IPSW
for the MacBook Pro (M1 Max, 16-inch, 2021),
released on 2026-10-26.
The download is 23.84 GB and is served directly from Apple's CDN.
This firmware is currently signed by Apple, so it can be used to restore or update your device via iTunes or Finder.
Verify the download using the checksums below.
Filename
UniversalMac_27.2_26B123_Restore.ipsw
Checksums
SHA-256
6613b34e8589db2202a01ec37a2648afb141ece13428175183f8f3e38438534f
SHA-1
617360e5619dbb424ed3774b98732bb3cfeacc0b
MD5
819227d6e82c48faf880125c52ea4f95
Direct URL
https://updates.cdn-apple.com/2026FallFCS/c9671975-52db-4fb5-9af2-00217169ba8d/UniversalMac_27.2_26B123_Restore.ipsw
Other Devices
MacBook Pro (M2 Max, 16-inch, 2023)
Mac14,6
Mac Pro (2023)
Mac14,8
MacBook Pro (16-inch PROLED XDR Display)
Mac17,12
MacBook Pro (M3 Max, 14-inch, Nov 2023)
Mac15,10
MacBook Air (13-inch, M3, 2024)
Mac15,12
Mac Studio (M1 Max)
Mac13,1
How to Restore with This IPSW
iTunes / Finder
macOS & Windows- Download the .ipsw file to your computer.
- Connect your MacBook Pro (M1 Max, 16-inch, 2021) via USB.
- Open iTunes (Windows / macOS Mojave and earlier) or Finder (macOS Catalina+) and select your device.
- Update (keep data): hold Option (Mac) or Shift (Windows) and click Update, then pick the .ipsw file.
- Restore (erase & install): hold Option / Shift and click Restore iPhone…, then pick the .ipsw file.
- Wait for the process to finish - do not disconnect.
Restoring will erase all data on the device. Back up first.
3uTools
Windows- Download and install 3uTools from 3u.com.
- Connect your MacBook Pro (M1 Max, 16-inch, 2021) via USB and trust the computer on the device.
- Go to Flash & JB > Easy Flash.
- Click Import and select the downloaded .ipsw file.
- Choose Flash mode: Update keeps data, Restore wipes the device.
- Click Flash and wait for the progress bar to complete - do not disconnect.
Only flash firmware that matches your exact device model.
DFU Mode
Recovery tipIf your device is stuck in a boot loop or iTunes/Finder does not recognise it, enter DFU mode first, then select the .ipsw file as normal.
iPhone 8 / X and later
- Quickly press & release Volume Up
- Quickly press & release Volume Down
- Hold Side button until screen goes black
- Hold Side + Volume Down for 5 s
- Release Side, hold Volume Down 5 more s
- Black screen = DFU active
iPhone 7 / 7 Plus
- Hold Sleep/Wake + Volume Down for 8 s
- Release Sleep/Wake, keep holding Volume Down for 5 s
- Black screen = DFU active
iPhone 6s and earlier
- Hold Sleep/Wake + Home for 8 s
- Release Sleep/Wake, keep holding Home for 5 s
- Black screen = DFU active