# checkForUpdatesWithCompletionHandler: Gets the latest asset-pack information from the server, updates outdated asset packs, and removes obsolete asset packs. ``` - (void) checkForUpdatesWithCompletionHandler:(void (^)(NSSet *updatingIdentifiers, NSSet *removedIdentifiers, NSError *error)) completionHandler; ``` ## Parameters `completionHandler` A block that receives a set of identifiers of asset packs that are being updated and a set of identifiers of removed asset packs or an error if one occurs. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)