OTA firmwares cannot be restored to. IPSW Downloads collects them for potential future use. They might also be useful if you're doing research.
| ✗ | HomePod mini | audioOS 9.9.14.1 (18J8394) | October 20, 2020 | 1.7 GiB | a451c0111198c34573f91aed9a9a0d67d8325380.zip |
| ✗ | HomePod (Unknown Model) | audioOS 9.9.14.1 (18J9394) | October 20, 2020 | 1.7 GiB | 783331e6415dfcc5713c837522ebf9d8918d5843.zip |
| ✗ | HomePod (Unknown Model) | audioOS 9.9.14.1 (18J8394) | October 20, 2020 | 1.7 GiB | 783331e6415dfcc5713c837522ebf9d8918d5843.zip |
| ✗ | HomePod | audioOS 9.9.14.1 (18J9394) | October 20, 2020 | 1.7 GiB | ad36ba24ada894311fc2b5dbefbdd11ca8a3ab2d.zip |
| ✗ | HomePod | audioOS 9.9.14.1 (18J8394) | October 20, 2020 | 1.7 GiB | ad36ba24ada894311fc2b5dbefbdd11ca8a3ab2d.zip |