Hold the Start or Home button while plugging the X12 Plus into your PC.

You will learn how Amlogic boot chains work, what a device tree blob (DTB) is, and why the meson-g12b kernel matters. More importantly, you’ll turn a $45 cheap TV box into a mini-PC that rivals devices twice its price.

Locate the button to select the firmware file (often labeled as "choose" or "load").

For retro gaming handhelds, like Anbernic, Powkiddy, or Retroid. These have active communities, regular firmware updates, and proper documentation. For car head units, stick with official updates unless you have a compelling reason to risk stability.