If you have the EC6108v9U (2GB RAM), absolutely update it to Android 7.0 – the performance gain is massive. If you have the v9A (1GB/4GB), stick to a lightweight "Nano" firmware or replace the box entirely.

: Place the firmware file in a folder named dload on the root of the USB drive. Flash the Device : Power off the STB. Insert the USB drive into one of the USB ports.

: If an update is available, follow the on-screen prompts to download it. The system will typically reboot automatically to install the new version. Manual Update (USB Method)