Explore the inner workings of the TP-Link XZ000-G3 GPON ONT through a comprehensive teardown and UART console access demonstration. Disassemble the device, examine its PCB components including the EN751221 SoC, and solder UART headers for console access. Connect a USB TTL adapter, establish a serial connection using Putty with provided login credentials, and attempt to access hidden features. Learn how to backup the firmware by dumping mtd0. Gain insights into the device's specifications, including its EcoNet EN751221 SOC system type, MIPS 34Kc V5.8 CPU model, and 64 MB RAM. Follow along with the step-by-step process, from introduction to firmware backup, in this informative 19-minute video tutorial.