MacBook Pro (M1 Pro, 14-inch, 2021) MacBookPro18,3

IPSW Signed 21C52

macOS 12.1

macOS

Version

12.1

Build ID

21C52

File Size

13.17 GB

Release Date

2021-12-13

Last Updated

2021-12-08

Download IPSW

Beta firmware? Download Here →

About This Firmware

macOS 12.1 (build 21C52) is an official Apple IPSW for the MacBook Pro (M1 Pro, 14-inch, 2021), released on 2021-12-13. The file 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 SHA-256 or SHA-1 checksum listed in the Checksums section below.

Filename

UniversalMac_12.1_21C52_Restore.ipsw

Checksums

SHA-256 8d3863cd4a09d5cfd75c4a3e61f7605d800f653b5ecd6e8628b19a44de6a67b0

SHA-1 04421498d4e6e031f2269c988a2663ebacb774e4

MD5 f372884892c445b80993250b65f6bebb

Direct URL

https://updates.cdn-apple.com/2021FCSWinter/fullrestores/002-42433/F3F6D5CD-67FE-449C-9212-F7409808B6C4/UniversalMac_12.1_21C52_Restore.ipsw

Other Devices

MacBook Pro (M3 Max, 16-inch, Nov 2023)

Mac15,9

iMac (Four Ports, 24-inch, 2024)

Mac16,3

MacBook Pro (13-inch, M2, 2022)

Mac14,7

MacBook Pro (M4 Max, 14-inch, Nov 2024)

Mac16,6

MacBook Pro (14-inch, M5)

Mac17,2

Mac mini (M1, Late 2020)

Macmini9,1

How to Restore with This IPSW

iTunes / Finder

macOS & Windows

Download the .ipsw file to your computer.
Connect your MacBook Pro (M1 Pro, 14-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 Pro, 14-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 tip

If 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