The tool only flashes—it does extract. To backup:
Amlogic USB Burning Tool is a Windows-based utility designed to flash, upgrade, and restore firmware on devices powered by Amlogic processors, such as Android TV boxes, tablets, and media players. It is the primary tool for recovering "bricked" devices—where the software has crashed so severely the device won't boot—by allowing a fresh firmware image to be written directly to the internal storage via a USB connection. CoreELEC Wiki Core Functionalities amlogic usb burning tool