Kaepernick threw for a career-high 412 yards, completing 27 of his 39 attempts. He threw for three touchdowns and had no interceptions.
The Packers defense was focused on stopping the 49ers' ground attack and the read-option. Although they did that, they also allowed Boldin and Vernon Davis to hurt them significantly.
Boldin caught 13 passes for 208 yards and one touchdown. Davis contributed another six catches for 98 yards and two touchdowns.
The San Francisco defense stifled the Packers running game and made just enough plays to thwart Aaron Rodgers and the vaunted Green Bay passing attack.
Although the 49ers won, there were some areas of concern that must improve, if the 49ers are going to defeat the Seattle Seahawks this Sunday.
Let's take a look at some of the key players who had lackluster games against the Packers and who must do better against Seattle.
*All stats are courtesy of Pro-Football-Reference.com.