Shows a file dialog to allow users to manually install a WALU update bundle. This function prompts the user to select a .bundle file, validates its contents, verifies the signature, stores the update, and prepares the cache.
The WALU configuration object
Promise that resolves when the installation is complete
If no file is selected, the bundle is invalid, signature verification fails, or installation fails
Shows a file dialog to allow users to manually install a WALU update bundle. This function prompts the user to select a .bundle file, validates its contents, verifies the signature, stores the update, and prepares the cache.