Hi sorrynewb, ok so everything you did was correct except... after you see the image of the Android with the triangle, press the HOME KEY on the phone. Its one of the 4 keys on the front of the phone at the bottom. looks like a house.
after you press the home key the recovery mode will show, use the volume rocker on the side of the phone and scroll down to the bottom option update from SD, then press the BACK button. The back button is again one of the 4 android keys on the front.
gud luk