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 9.9.15.1 (19J572) | October 25, 2021 | 1.9 GiB | 771eba9ab0898fd80c232b6fa48d1424933eab8d.zip |
| ✗ | HomePod mini | audioOS 9.9.15.1 (19J6572) | October 25, 2021 | 1.9 GiB | 771eba9ab0898fd80c232b6fa48d1424933eab8d.zip |
| ✗ | HomePod (Unknown Model) | audioOS 9.9.15.1 (19J572) | October 25, 2021 | 1.9 GiB | 092506dde3531cbdad445086eadb899e7e50afda.zip |
| ✗ | HomePod (Unknown Model) | audioOS 9.9.15.1 (19J6572) | October 25, 2021 | 1.9 GiB | 092506dde3531cbdad445086eadb899e7e50afda.zip |
| ✗ | HomePod | audioOS 9.9.15.1 (19J572) | October 25, 2021 | 1.9 GiB | 092506dde3531cbdad445086eadb899e7e50afda.zip |
| ✗ | HomePod | audioOS 9.9.15.1 (19J6572) | October 25, 2021 | 1.9 GiB | 092506dde3531cbdad445086eadb899e7e50afda.zip |