. Because Apple continues to "sign" the OTA (Over-the-Air) update for iOS 6.1.3 for this model, users can create or use specific OTA-based custom IPSWs to revert from iOS 9.3.6.
: Tools like Sn0wBreeze historically allowed users to modify the standard Apple boot logo by patching the IPSW's IMG3 file.
After restoring a custom IPSW, the phone will hang at boot unless you boot it with a computer. iphone 4s custom ipsw
Before diving into the "how," let's look at the "why." The iPhone 4s suffers from three major problems that a custom IPSW solves:
: Creating a firmware file that already includes Cydia or specific root access tools like OpenSSH. After restoring a custom IPSW, the phone will
Use (Linux/macOS) or Odysseus for granular control.
Result: A fully untethered iPhone 4s running iOS 6.1.3, complete with the old skeuomorphic design and snappy performance. Result: A fully untethered iPhone 4s running iOS 6
Several legacy communities host verified IPSW files. Proceed with caution: