Load action.
In Photoshop, open the Actions panel (Window > Actions). Click the panel menu and select Load Actions, locate the BokehBomb.atn file (it may be in your Downloads folder), then click Open. Go to the Brushes panel (Window > Brushes) and use the Import Brushes option from the dropdown menu to add the BokehBrushes.abr file. Do the same with the BokehGradients.grd file (Window > Gradients). The action won’t work correctly without all the components.