About this 3D model

After successfully replicating the original design, my child dropped it, causing the joystick spring to pop out and the wire end connector to detach (it was already crooked). As a result, I used a flexible welding wire to replace the spring and removed the heavy middle frame to strengthen the back cover: 1. Added reinforcing ribs to prevent deformation, 2. Moved the type-c female connector screw hole from the middle frame to the back cover, 3. Removed the two screw fixing positions in the middle of the left and right sides and added ears on both sides to use the joystick housing to fix it, significantly improving the overall strength and preventing the four corners from warping. When installing, note that you should install this back cover first and then install the joystick back cover last. PS: The switch on the joystick PCB also broke, after flying wires, it was not easy to find a suitable small button.