To achieve the +6dBm output power on the WB55, VDD needs to be > 1.95V. What is the max ouput power you can achieve if the device is operated at 1.8V?

Does the 28pin STM32F042 still support DFU over USB even though the USB pins PA12 and PA11 have to be remapped to PA9 and PA10? I want to use DFU to program my part at factory so it will be blank.