Flash BIOS update for Windows 10 (32-bit, 64-bit), 8.1 (32-bit, 64-bit), 8 (32-bit, 64-bit), 7(32-bit, 64-bit) - IdeaPad 305-15IBY, Lenovo B40-30, B50-30, B50-30 Touch, E40-30 - US