Nothing Tech's Phone 2a receives a hotfix update to Nothing OS 2.5.4A, addressing critical bugs and enhancing camera performance with color accuracy, saturation, Ultra HDR optimization, and portrait mode improvements. The 25 MB update also resolves system stability issues, app launch flickering, and incorrect Wi-Fi or data display in Quick Settings. Users are encouraged to download the unified OTA update zip for global variants and install it via the Local Upgrade method for the best experience.