iOS 15.1 (19B74) for iPhone 12

Not signed Released Oct 25, 2021 iPhone13,2

Download IPSW

iPhone13,2,iPhone13,3_15.1_19B74_Restore.ipsw

6.32 GB

Apple no longer signs this version. Finder and iTunes will refuse to install it on iPhone 12 — the latest signed version is iOS 27.0.1.

Download iOS 15.1

The file is downloaded directly from Apple’s servers (updates.cdn-apple.com). Large files download faster with a download manager or curl -O.

Verify the file

SHA256: 2cc0b48ace74264d83a49d450048eea32bcad114004fdecb94ae2307d54b9e43
SHA1: b14d4cec798c449a1ba0373c1aa8ddfbec8fdc01
MD5: 1fecbba61a4fa6a6f8a3e60a3d3abe00

On a Mac: shasum -a 256 iPhone13,2,iPhone13,3_15.1_19B74_Restore.ipsw · On Windows: certutil -hashfile iPhone13,2,iPhone13,3_15.1_19B74_Restore.ipsw SHA256

Firmware details

Version: iOS 15.1
Build: 19B74
Released: October 25, 2021
Uploaded: October 15, 2021
File size: 6.32 GB (6,785,210,096 bytes)
Signing: Unsigned

Device

Name: iPhone 12
Identifier: iPhone13,2
Board: D53gAP
Platform: t8101
CPID: 0x8101
BDID: 0xC

Jailbreak

Public jailbreak tools reported to support iOS 15.1 on this device:

Dopamine Semi-Untethered

A modern jailbreak for iOS & iPadOS 15.0 - 16.6.1 (A12+). Rootless and highly stable.

Guide

Real jailbreaks are always free and open source. Sites asking you to pay, install profiles or “verify” with surveys are scams.

How to install iOS 15.1 with this IPSW

Back up your iPhone 12 to iCloud or your computer — restoring erases the device.
Turn off Find My in Settings → [your name] → Find My.
Connect the device with a cable and open Finder (macOS Catalina or later) or Apple Devices / iTunes (Windows).
Hold Option (Mac) or Shift (Windows) and click Restore. Choose iPhone13,2,iPhone13,3_15.1_19B74_Restore.ipsw.
Wait — the device restarts several times. Don’t disconnect it until you see the Hello screen.

Stuck on the Apple logo? Put the device into recovery mode first, then restore.

Build 19B74 is also available for

← All iPhone 12 firmware