Apple iMac 24-inch (M1, Two Ports, 2021) macOS 12.6 firmware
Apple iMac 24-inch (M1, Two Ports, 2021)
Signed
macOS 12.6
Build 21G115 For iMac21,1, J456AP
Global · IPSW
A newer version is available for this region: macOS 27.0.1
Download
13.1 GB
Downloads from updates.cdn-apple.com.
File details
- OS
- macOS 12.6
- Region
- Global
- Type
- IPSW
- Install with
- How to restore a Mac with Apple silicon (IPSW)
- Released
- Size
- 13.1 GB
- File name
UniversalMac_12.6_21G115_Restore.ipsw- MD5
e60dce4e98cbe3501ce9b9d5eef354d0- SHA-1
3bae26d997c8ad246bb6ca4bd85bb8498f0680e9- SHA-256
5113f8d3c77fd725ea6357ced5764bc57183d2d388492c58c46ff2729d0658e5
After downloading, compare the checksum with the one above. If they differ, the file is incomplete — download it again.
Before you download
- Make sure your device’s model number is one of: iMac21,1, J456AP. You will find it in Settings → About phone, or on the box.
- This file is for the Global region. Installing another region’s firmware can remove features or block updates.
- Apple devices can only restore versions marked “Signed”.
- Back up your photos, contacts and files first, and charge the battery above 50%.
How to install
Macs with Apple silicon (M1 and newer) and Intel Macs with a T2 chip can be restored from an IPSW using a second Mac and Apple Configurator. This reinstalls the firmware and macOS and erases the Mac.
Read the guide: How to restore a Mac with Apple silicon (IPSW)