You generally cannot update these boxes via the internet.
Power Off the STB: Unplug the 888 box from the wall socket.
Insert USB: Plug the prepared USB drive into the box’s USB port.
Start the Update Process (varies by model):
DO NOT INTERRUPT: The update takes 1–3 minutes. The box may restart automatically. Never unplug power during this phase.
First Boot: After updating, perform a Factory Reset (Menu → Installation → Factory Reset). Then run a Full Channel Scan.
Plug the USB into your PC. Right-click the drive → Format → File System: FAT32 → Start. This ensures the STB can read the drive.
If the manufacturer does not provide updates, some community-run repositories aggregate firmware files. Use these at your own risk: