If you cannot find an official update, consider customizing the firmware yourself using tools like Sunplus Flash Image Tool (SP-FIT). You can:
Caution: This voids any warranty and requires Linux knowledge. Upgrade Firmware Sunplus Box Tv1 20-
Use this if your box is working fine and you just want to update software. If you cannot find an official update, consider
Initiate the Upgrade:
Execute:
Wait:
Use this if the box is stuck on the logo but you can access recovery. Caution: This voids any warranty and requires Linux