IPSW Downloads

iOS 4.2.8 - 8E401 for iPhone 4 CDMA

This firmware is not signed. This means you cannot restore to it in iTunes.

Release DateInvalid Date
Upload Date02 May 2011
File NameiPhone3,3_4.2.8_8E401_Restore.ipsw
File Size0.64 GB
SHA256sum
MD5sum0e0e4bf8f0d7c37b9a252fcbed60ac0c
SHA1sumd4ff1e878166d74cc6b330f2b7167c6f6b07a1b5
IdentifieriPhone3,3

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iPhone 4 CDMA to your PC.
  3. Open iTunes and navigate to your iPhone 4 CDMA.
  4. Hold the Shift key and click "Restore".
  5. Select the iPhone3,3_4.2.8_8E401_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iPhone 4 CDMA to reboot.

macOS

  1. Connect your iPhone 4 CDMA to your Mac.
  2. Navigate to your iPhone 4 CDMA in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the iPhone3,3_4.2.8_8E401_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iPhone 4 CDMA to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iPhone 4 CDMA to your PC.
  3. Open a terminal and navigate to the IPSW file you downloaded, e.g., cd ~/Downloads.
  4. To perform a full erase restore, type idevicerestore -e iPhone3,3_4.2.8_8E401_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 4 CDMA to reboot.