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Preheat oven to 350°F. Spray 9-inch spring form pan with Baker's Joy spray.
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Combine 2 cups flour, baking powder, baking soda, and ½ teaspoon salt; set aside. Beat ½ cup butter and granulated sugar in large bowl with electric mixer until light and fluffy. Add eggs, beating well after each addition. Beat in vanilla and lemon zest.
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Alternately beat in flour mixture and sour cream beginning and ending with flour mixture. Pour batter into prepared pan evenly sprinkle with blueberries; lightly press blueberries into batter.
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Combine remaining 1-1/2 cups flour, brown sugar, cinnamon and remaining ½ teaspoon salt. Cut butter in using pastry cutter until mixture resembles coarse crumbs.
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Sprinkle crumb mixture over blueberries. Bake 55 minutes or until top is golden brown and a tester inserted into the center comes out clean. Cool completely in pan on wire rack.