Apple iPhone 4 (CDMA) iOS 4.2.8 IPSW firmware
Apple iPhone 4 (CDMA)
Not signed
iOS 4.2.8
Build 8E401 For iPhone3,3, n92ap
Global · IPSW
A newer version is available for this region: iOS 7.1.2
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
653 MB
Downloads from secure-appldnld.apple.com.
File details
- Device
- Apple iPhone 4 (CDMA)
- OS
- iOS 4.2.8
- Region
- Global
- Type
- IPSW
- Released
- Size
- 653 MB
- File name
iPhone3,3_4.2.8_8E401_Restore.ipsw- MD5
0e0e4bf8f0d7c37b9a252fcbed60ac0c- SHA-1
d4ff1e878166d74cc6b330f2b7167c6f6b07a1b5
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: iPhone3,3, n92ap. 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