Technically not an "Android ROM," CoreELEC is a "Just Enough OS" based on Kodi. It runs via a microSD card or USB drive, leaving your internal Android flash untouched.

The Amlogic S905X3 has long been the "sweet spot" for Android TV box enthusiasts. With its quad-core Cortex-A55 architecture and Mali-G31 MP2 GPU, it offers a potent mix of efficiency and performance. However, the stock firmware shipped with most generic S905X3 boxes is often bloated, poorly optimized, or stuck on an outdated version of Android.

Load the image into the tool, hit "Start," and wait for the green progress bar. Conclusion

Lightweight, debloated, and optimized for speed. It’s often the go-to choice if your specific box brand isn't supported by other developers.