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# downloadAndInstall()

Downloads and installs assets not already on the device.

```
final func downloadAndInstall() async throws
```

## Discussion

If the system is unable to immediately download assets because of a connectivity issue or other error, the system will automatically attempt to download the assets later. This method will return when the initial download and installation attempt has succeeded or failed; use [`status(forModules:)`](/documentation/Speech/AssetInventory/status(forModules:)) or another installation request to monitor the success or progress of later attempts.

The system consolidates download and installation requests; you may call this method several times without causing redundant downloads.

---

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