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 12.1 (16J6602) | October 30, 2018 | 1.6 GiB | 96975559689d7ad4c2d3839ea8e48d3c5872f019.zip |
| ✗ | Apple TV 4K | tvOS 12.1 (16J5575c) | September 18, 2018 | 1.6 GiB | e5d18af5d84aaaf1813c73f64a2f402310a02b96.zip |
| ✗ | Apple TV 4K | tvOS 12.1 (16J5584c) | October 2, 2018 | 1.6 GiB | bc7984c7f0b1c95279879f639d37aeedf4bad097.zip |
| ✗ | Apple TV 4K | tvOS 12.1 (16J5593c) | October 9, 2018 | 1.6 GiB | b6853ef1930bdc6ed2ea241dd955eea88723b2be.zip |
| ✗ | Apple TV 4K | tvOS 12.1 (16J5600a) | October 15, 2018 | 1.6 GiB | eedbbf4631033c5569d830349a1967f08c50138a.zip |
| ✗ | Apple TV 4K | tvOS 12.1 (16J5602a) | October 22, 2018 | 1.6 GiB | 9a045cac3b3c288f1ce3ea7c4a4989472c1ed831.zip |
| ✗ | Apple TV 4K | tvOS 12.1 (16J602) | October 30, 2018 | 1.6 GiB | 96975559689d7ad4c2d3839ea8e48d3c5872f019.zip |
| ✗ | Apple TV 4 (2015) | tvOS 12.1 (16J5600a) | October 15, 2018 | 1.4 GiB | e25ba4edf974f3aac5006c056ab32a62b7db53e2.zip |
| ✗ | Apple TV 4 (2015) | tvOS 12.1 (16J5575c) | September 18, 2018 | 1.4 GiB | 9c4b1eb3e6d6cd83bd879f276d8b41bddccdd2dc.zip |
| ✗ | Apple TV 4 (2015) | tvOS 12.1 (16J5584c) | October 2, 2018 | 1.4 GiB | 2823d10f9ca86d226405af23dffe1cf84fae9702.zip |
| ✗ | Apple TV 4 (2015) | tvOS 12.1 (16J5593c) | October 9, 2018 | 1.4 GiB | 53ab20606ca9a2bcf456ae3b83d77cdba1949b7d.zip |
| ✗ | Apple TV 4 (2015) | tvOS 12.1 (16J6602) | October 30, 2018 | 1.4 GiB | f6bdb80a50c2491d6d42466072fef7fba662d184.zip |
| ✗ | Apple TV 4 (2015) | tvOS 12.1 (16J5602a) | October 22, 2018 | 1.4 GiB | 3443588d8226bec74a13f166b86ea8e18b16d9eb.zip |
| ✗ | Apple TV 4 (2015) | tvOS 12.1 (16J602) | October 30, 2018 | 1.4 GiB | f6bdb80a50c2491d6d42466072fef7fba662d184.zip |