Community forums like , 4PDA , and FreakTab are the best sources for "fixed" S905L2 ROMs. Look for "SlimBoxTV" or "AidansROM" builds, as these are widely considered the gold standard for Amlogic performance.
Proceed with that scope? If you want other focus (e.g., bootloader only, Linux kernel, u-boot, DRM, or Android), tell me which—otherwise I’ll cover boot chain, U-Boot, Linux kernel, DT, vendor blobs, and OTA.
specifically requires a dedicated Device Tree Blob (DTB), such as meson-gxl-s905l2-ipbs9505 .