Executive Summary: Not Recommended / Extremely Difficult
The short answer: No official Android 9 firmware exists for MT6580. Any attempt is a custom, experimental, unsupported port (e.g., LineageOS 16.0 unofficial) with a very high risk of bricking the device. The chipset is not designed for Android 9.
The MT6580 processor, a legendary budget workhorse from MediaTek, was never officially designed to run Android 9 Pie. Released during the era of Android 5.1 and 6.0, it became the heart of countless "ultra-budget" smartphones. To install Android 9 on this hardware is to embark on a journey of community-driven persistence. The Quest for the Custom ROM
7. Conclusion & Recommendation
| Your Goal | Verdict | |-----------|---------| | Learning / hobby / reverse engineering | Possible but 100+ hours of work | | Daily phone use | Impossible – too unstable | | Security / banking apps | No – SafetyNet fails | | Better performance | No – Android 9 is heavier than 6.0 |