During January 2025, Jingmatrix worked on the bmax121/APatch repository, focusing on improving security and configuration accuracy for Android deployments. Jingmatrix addressed a critical SELinux context issue by updating the default context from 'magisk' to 'untrusted_app', ensuring that excluded applications in APatch configurations now align with Android’s expected SELinux policies. This fix, implemented in Kotlin and leveraging expertise in Android development and system configuration, reduced the risk of misconfiguration and enhanced deployment consistency. The work demonstrated careful attention to platform standards and maintainability, providing a targeted solution that improved both the security posture and future development workflows for APatch.