Yingying - I think this firmware is only useful for Precise (3.2.x) and newer. See commit ca9a46056908d3cade6957b3d5b2e698356b29fc
Yingying - I think this firmware is only useful for Precise (3.2.x) and newer. See commit ca9a46056908d3c ade6957b3d5b2e6 98356b29fc