This is roughly the same as the last step, but you need to avoid the button. I used a plastic opening pick to lift the band over the button, but you could probably achieve similar results with a small flat-head screwdriver.

Take extra care to not rip out the button with the band.

If you want, now is a good time to clean the watch under the band (mine was quite dirty from 2-3 years of exposure to dirt and dust.