iOS 27.1 (24A94425) for iPhone Duo
Signed — can be installed
Released Oct 22, 2026
iPhone19,4
Download IPSW
iPhone19,4_27.1_24A94425_Restore.ipsw
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
- 58fbfda85615e90221136d55288f64c9f41386510f8cd77feb8c9d20cc0a782e
- SHA1
- 19f1bafde7dc4cba523a146a16213464aaf3bf90
- MD5
- 269b204e32ee3eed9a3582f1f211aa70
On a Mac: shasum -a 256 iPhone19,4_27.1_24A94425_Restore.ipsw · On Windows: certutil -hashfile iPhone19,4_27.1_24A94425_Restore.ipsw SHA256
Firmware details
- Version
- iOS 27.1
- Build
24A94425- Released
- October 22, 2026
- Uploaded
- October 21, 2026
- File size
- 11.85 GB (12,724,731,538 bytes)
- Signing
- Signed
Device
- Name
- iPhone Duo
- Identifier
iPhone19,4- Board
V68AP- Platform
t8160- CPID
0x8160- BDID
0xE
Jailbreak
No public jailbreak is known for iOS 27.1 on iPhone Duo.
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 27.1 with this IPSW
- Back up your iPhone Duo 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
iPhone19,4_27.1_24A94425_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.