iPhone 4s · iPhone4,1

iPhone 4s · iOS 8.3

12F70Unsigned

Catalog data · Last updated: Oct 23, 2026, 6:07 PM UTC

Restore IPSW for iPhone 4s: iOS 8.3, build 12F70.

Firmware information

Version: iOS 8.3
Build: 12F70
IPSW: Restore IPSW
Size: 1.44 GB
Release date: Apr 8, 2015, 6:32 PM UTC
File name: iPhone4,1_8.3_12F70_Restore.ipsw
Download host: secure-appldnld.apple.com

IPSW download

Check the model and signing status before downloading.

Download IPSW

Download hostsecure-appldnld.apple.comiPhone4,1_8.3_12F70_Restore.ipsw

Back up before you restore. A restore can erase the data on the device. The identifier has to match, and a file you can download may still be rejected for restore.

Checksum

SHA-2560c71642bcb2e23ea7be7205b489f7dc0484b439df90919a4467b3d0c546b74aa

SHA-12b1b3e1670c65d142aaecbe91b30f72c5d459265

MD551217942e98f854784f324a1833baa3b