1. First, disassemble the upper cover of Supor electric pressure cooker from the inside and pry it open with a screwdriver. Be careful not to damage the electric pressure cooker with excessive force.

2. Secondly, press it a little hard. Just aim at the buckle and apply a little force.

3. Finally, close the lid and check whether it falls off. Repeat these steps several times. If it still drops, repeat these steps.