Customers in China, Hong Kong and Taiwan can send us back for upgrades (the shipping cost is cheaper than abroad, you can send it back, and we upgrade the insurance).
Or wait for us to write the upgrade program will announce the upgrade method, the time will be longer, self-upgrade needs to be disassembled, short the upgrade button on the PCB, and it will be more troublesome to upgrade by yourself.
The firmware of each box is different, upgrade by yourself, you need your computer to connect to our server to verify and generate the firmware of your own box ID, if your SL04 box is activated offline, it will not be upgraded.
Please be cautious if you misoperate, you need to bear the problems caused by the upgrade, and eventually you need to return to the factory for repair.