First you will have to debrand the MF283+
This process will require you to purchase a MINI PCIE to USB, kelangan mo rin buksan yung MF283+ na routuer, and remove the module na ilalagay mo sa MINI PCIE to USB.
Panoorin mo yung video, kumpleto yan. But before you can unlock nga, you will have to purchase a MINI PCIE to USB sa Lazada or sa Shopee.
Wala kasi nagbebenta ng unlock code niyan eh, nagtry din ako. that's why I ended up doing the work myself.