OTA firmwares cannot be restored to. IPSW Downloads collects them for potential future use. They might also be useful if you're doing research.
| ✓ | iPhone 4 (CDMA) | iOS 7.1.2 (11D257) | October 4, 2015 | 1.1 GiB | be2f8a9534473bd41453e61169b860638d33c8e3.zip |
| ✓ | iPhone 4 (GSM / 2012) | iOS 7.1.2 (11D257) | October 4, 2015 | 1.1 GiB | 372d61248960fa6179605f8e3d5c3695f40294b7.zip |
| ✓ | iPhone 4 (GSM) | iOS 7.1.2 (11D257) | October 4, 2015 | 1.1 GiB | 7ef85a4e19de8712b610af095cc837136289058d.zip |
| ✓ | Apple TV 2G | iOS 7.1.2 (11D258) | October 4, 2015 | 654 MiB | 072da20c6aa5a08a614de1f4fdf4070e24fcdc96.zip |