iOS 9.3.1 (13E6238) for iPhone 5s (GSM) ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
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Release Date March 31, 2016 Upload Date March 30, 2016 Filename 2cb295a96db692457e61f813a0c9ab891265aba0.zip Filesize 1.4 GiB Identifier iPhone6,1
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