Apple iPhone 12 Pro Max iOS 14.3 IPSW firmware
Apple iPhone 12 Pro Max
Not signed
iOS 14.3
Build 18C66 For iPhone13,4, D54pAP
Global · IPSW
A newer version is available for this region: iOS 27.2 beta 4
Apple no longer signs this version, so a normal restore with Finder or iTunes will fail. Use a signed version unless you know you need this one.
Download
5.19 GB
Downloads from updates.cdn-apple.com.
File details
- Device
- Apple iPhone 12 Pro Max
- OS
- iOS 14.3
- Region
- Global
- Type
- IPSW
- Released
- Size
- 5.19 GB
- File name
iPhone13,4_14.3_18C66_Restore.ipsw- MD5
e88bb47a7085e2f563e394f84133cc1a- SHA-1
79692fd20e96f1c5831bdd4dff0b71e46918634b- SHA-256
692e22897fb6738fb10c1be5dbb841978eec6c9776cc9c38839cf07797058dff
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: iPhone13,4, D54pAP. 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
Use Finder on a Mac or the Apple Devices app / iTunes on Windows to install an IPSW file. Apple only accepts versions it is still signing, so check the “Signed” label before you download.
Read the guide: How to restore an iPhone, iPad or iPod with an IPSW file