OTA firmwares cannot be restored to. IPSW Downloads collects them for potential future use. They might also be useful if you're doing research.
| ✗ | Apple TV 4K | tvOS 11.2.5 (15K5544b) | January 9, 2018 | 1.3 GiB | ceea9b2cfe2559edd388a9f9aa7706a0ee3e6a8e.zip |
| ✗ | Apple TV 4K | tvOS 11.2.5 (15K5552a) | January 17, 2018 | 1.3 GiB | 4ea07537fb2afa178ca85c343a7e53d0028dcb9f.zip |
| ✗ | Apple TV 4K | tvOS 11.2.5 (15K5531d) | December 14, 2017 | 1.4 GiB | 3f9b4f7e20aa1e17308956815838c09561a98549.zip |
| ✗ | Apple TV 4K | tvOS 11.2.5 (15K5539b) | December 20, 2017 | 1.4 GiB | ca6dd919c5c98739edb80afa5232444a59b9511f.zip |
| ✗ | Apple TV 4K | tvOS 11.2.5 (15K5544a) | January 3, 2018 | 1.3 GiB | a926834e4d7cd5dfe4899d4db1ba69e6f3405ae5.zip |
| ✗ | Apple TV 4K | tvOS 11.2.5 (15K5549a) | January 12, 2018 | 1.3 GiB | 04a09ce2292a6b11875346812a13c59fdaa9ee5a.zip |
| ✗ | Apple TV 4K | tvOS 11.2.5 (15K6552) | January 23, 2018 | 1.3 GiB | 0e228bf7a7265ef1bc6550b300278b3bd5d122dd.zip |
| ✗ | Apple TV 4K | tvOS 11.2.5 (15K552) | January 23, 2018 | 1.3 GiB | 0e228bf7a7265ef1bc6550b300278b3bd5d122dd.zip |
| ✗ | Apple TV 4 (2015) | tvOS 11.2.5 (15K552) | January 23, 2018 | 1.1 GiB | 468e8c9c2b41ff9c055130408c37927fd62a8855.zip |
| ✗ | Apple TV 4 (2015) | tvOS 11.2.5 (15K5531d) | December 14, 2017 | 1.1 GiB | 4e9ca46878a1dbf5e0caf4bd154540857c052a02.zip |
| ✗ | Apple TV 4 (2015) | tvOS 11.2.5 (15K5539b) | December 20, 2017 | 1.1 GiB | f32b05e518e8af0419b1f7100a2c3224c7635b64.zip |
| ✗ | Apple TV 4 (2015) | tvOS 11.2.5 (15K5544a) | January 3, 2018 | 1.1 GiB | d31d1d4d74ab308b859b52f56c6d24809a45d089.zip |
| ✗ | Apple TV 4 (2015) | tvOS 11.2.5 (15K6552) | January 23, 2018 | 1.1 GiB | 468e8c9c2b41ff9c055130408c37927fd62a8855.zip |
| ✗ | Apple TV 4 (2015) | tvOS 11.2.5 (15K5544b) | January 9, 2018 | 1.1 GiB | b4d1052fc7f2bcb9b29a664177a04bc6873be0e2.zip |
| ✗ | Apple TV 4 (2015) | tvOS 11.2.5 (15K5549a) | January 12, 2018 | 1.1 GiB | 7e9b02e110fd8e45e6418939f7c488f9b3ac6436.zip |
| ✗ | Apple TV 4 (2015) | tvOS 11.2.5 (15K5552a) | January 17, 2018 | 1.1 GiB | 349beb34c2fd1f43edba938ce7a91eb66b8841f3.zip |