To truly take advantage of V2.3, you shouldn't just "plug and play." Consider these follow-up steps:
While "V2.3" often refers to the board version, matching firmware (e.g., build 18186) is designed for these specific capabilities: Q6x V2.3 Firmware
Use the "toothpick method": Press the hidden reset button inside the AV port while plugging in the power to enter recovery mode. PC Tool (USB-USB): Amlogic USB Burning Tool To truly take advantage of V2