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 12.1.1 (16K6045) | December 5, 2018 | 1.6 GiB | eb0d8f2bbac019833865df8007a2f3ed374c714f.zip |
| ✗ | Apple TV 4K | tvOS 12.1.1 (16K45) | December 5, 2018 | 1.6 GiB | eb0d8f2bbac019833865df8007a2f3ed374c714f.zip |
| ✗ | Apple TV 4K | tvOS 12.1.1 (16K5045a) | November 29, 2018 | 1.6 GiB | a9ae620a01d846478eaa2596cbbf085e905f0a3b.zip |
| ✗ | Apple TV 4K | tvOS 12.1.1 (16K5044a) | November 15, 2018 | 1.6 GiB | 35f8fcc3412abe031ec45c5254f5f2e60e2ab41b.zip |
| ✗ | Apple TV 4K | tvOS 12.1.1 (16K5041a) | November 7, 2018 | 1.6 GiB | bf5a89ec0075dbef9bd35a06b906d6dd0e70e802.zip |
| ✗ | Apple TV 4K | tvOS 12.1.1 (16K5035b) | October 31, 2018 | 1.6 GiB | eb7ef64c170b947528794698cf92943d14521cb5.zip |
| ✗ | Apple TV 4 (2015) | tvOS 12.1.1 (16K6045) | December 5, 2018 | 1.4 GiB | 0dfcec2a91db3f51778d8b467125609584569762.zip |
| ✗ | Apple TV 4 (2015) | tvOS 12.1.1 (16K45) | December 5, 2018 | 1.4 GiB | 0dfcec2a91db3f51778d8b467125609584569762.zip |
| ✗ | Apple TV 4 (2015) | tvOS 12.1.1 (16K5045a) | November 29, 2018 | 1.4 GiB | cf7033f4e7251f77a481773d64f0d1805ac6a9d3.zip |
| ✗ | Apple TV 4 (2015) | tvOS 12.1.1 (16K5044a) | November 15, 2018 | 1.4 GiB | 1cedd7962fa8366a9c35e8a1a9ea9675111df1b5.zip |
| ✗ | Apple TV 4 (2015) | tvOS 12.1.1 (16K5041a) | November 7, 2018 | 1.4 GiB | 7950cf1c9a45d0ba2e7ac89994c9921e884abb2f.zip |
| ✗ | Apple TV 4 (2015) | tvOS 12.1.1 (16K5035b) | October 31, 2018 | 1.4 GiB | 62ba6631283e8969bd6be6796e95c3a978b55e6a.zip |