3. Click on the desired firmware version to start the download Downloads Links for iPhone 4S iPhone4,1 VERSION RELEASE DATE RELEASE DATE SIZE SIZE STATUS iOS 9.3.6 (13G37) RELEASE DATE 22/07/2019 SIZE 1.61 GB Signed iOS 9.3.5 (13G36) RELEASE DATE 25/08/2016 SIZE 1.61 GB Signed iOS 9.3.4 (13G35) RELEASE DATE 04/08/2016 SIZE 1.61 GB Unigned Old unsigned iOS versions will be added later.