There is an updated design available. There's more material on the latch that pulls the cable to prevent it from breaking. Go to the dealer and buy the latch with cable assembly.
Using a small phillips screwdriver, remove the knob for the seat back tilt/slide handle. Then peel away the two little square icons (if they haven't already fallen off). Now remove that side panel.
The seat back is held on by trim clips, and the whole thing pulls away. Some may stick in the seat frame and get the cardboard of the seat back a little out of shape, but you can push it all back into position.
Now pry the little cover off the recline latch. Two phillips screws there and it's loose. Follow the cable down the frame and using a long flat screwdriver or a long needlenose pliers, seperate the cable end from the lever.
Pull the entire latch and cable up through the top of the seat. Take the new one fish it through the same path the old one came up. You may need to work the seat recline lever down there a little to get it in position to hook the cable end over it. But when you do, just install everything in the order you removed it and it's done.