Developing a custom ROM for the Samsung A04 is a challenging but rewarding task. By leveraging open-source resources, collaborating with the community, and utilizing existing kernels, we can create a stable and feature-rich custom ROM. This paper provides a comprehensive overview of the process, highlighting the benefits and challenges involved. With dedication and perseverance, a custom ROM for the Samsung A04 can be developed, enhancing the device's performance, features, and overall user experience.