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 (15K6106) | December 4, 2017 | 1.4 GiB | 9bdef6af50d31a7475ecaa59a372dd2a20ac3efe.zip |
| ✗ | Apple TV 4K | tvOS 11.2 (15K5085b) | November 1, 2017 | 1.4 GiB | 1d13553d433a1286175b93d26696179a774f49a2.zip |
| ✗ | Apple TV 4K | tvOS 11.2 (15K5090c) | November 7, 2017 | 1.4 GiB | 3c16f21b7b5d9022d5a6fc01fd9b01c640b91e7e.zip |
| ✗ | Apple TV 4K | tvOS 11.2 (15K5099a) | November 13, 2017 | 1.4 GiB | 7d84c4d611dd18d68ddfd9a242c72ac617c635c8.zip |
| ✗ | Apple TV 4K | tvOS 11.2 (15K5102a) | November 17, 2017 | 1.4 GiB | df98220ea38d93c8227e88f79b17c203820ab18d.zip |
| ✗ | Apple TV 4K | tvOS 11.2 (15K5105a) | November 28, 2017 | 1.4 GiB | 5378e32d95e48d8a3b0f8ebb4d4a9ee75295bab6.zip |
| ✗ | Apple TV 4K | tvOS 11.2 (15K106) | December 4, 2017 | 1.4 GiB | 9bdef6af50d31a7475ecaa59a372dd2a20ac3efe.zip |
| ✗ | Apple TV 4 (2015) | tvOS 11.2 (15K5102a) | November 17, 2017 | 1.1 GiB | 72eb500bc3e5f288b0acd6d3b1ad05786f3963e4.zip |
| ✗ | Apple TV 4 (2015) | tvOS 11.2 (15K5085b) | November 1, 2017 | 1.2 GiB | 78b91bffebd7555a917398e387a57b0750adf128.zip |
| ✗ | Apple TV 4 (2015) | tvOS 11.2 (15K5090c) | November 7, 2017 | 1.1 GiB | 13d1a2d650ac03247d505f307ec40414ae2fe33c.zip |
| ✗ | Apple TV 4 (2015) | tvOS 11.2 (15K5099a) | November 13, 2017 | 1.1 GiB | d0f7b6d371b579961f0d8786687dedbdfaf5e7a1.zip |
| ✗ | Apple TV 4 (2015) | tvOS 11.2 (15K6106) | December 4, 2017 | 1.1 GiB | 5754ba7088a1e49454e765059dabdbd4be581f32.zip |
| ✗ | Apple TV 4 (2015) | tvOS 11.2 (15K5105a) | November 28, 2017 | 1.1 GiB | fe0b9128f58ceccaa9ddd09f67f0599cbfa668df.zip |
| ✗ | Apple TV 4 (2015) | tvOS 11.2 (15K106) | December 4, 2017 | 1.1 GiB | 5754ba7088a1e49454e765059dabdbd4be581f32.zip |