Step 4 Complete Second Layer

Insert the Edges to complete the First Layer

Step 4 Result should be:

Step 4.1 Identify the Edge Pieces

The Edge Piece should be having the Colour combination of the 2 adjacent center pieces

Eg: Here the center Pieces are Red and Blue. So the Edge Should be having the same colour Red and Blue

Tip: If no matching edge pieces are available on the Top Layer just do the (U R Ui Ri Ui Fi U F) or (Ui Li U L U F Ui Fi) to pull out the wrong edge piece in the layer 2 !

Step 4.2 Solve Layer 2 Edge Pieces

Possible Scenario

Scenario 1: Edge to Right Side

Scenario 2: Edge to Left Side

Do the Same for other three sides

Step 4 Result:

Step 4 is done. Now move to Step 5