Worked on enhancing the iOS HotUpdater in the gronxb/hot-updater repository, focusing on improving responsiveness and stability during in-app updates. Introduced an asynchronous updateBundle method with a completion callback using Objective-C and Objective-C++, ensuring the UI thread remained unblocked throughout the update process. Implemented 200ms throttling for progress events to minimize excessive React Native updates, which contributed to smoother performance and reduced update latency. Addressed UI thread blocking issues when emitting update events, resulting in a more stable user experience. Leveraged skills in asynchronous programming, React Native, and iOS development to deliver a more reliable update flow for end users.