I recently purchased a Breeze with WiFi issues. Tried everything but even though was able to get some flights, was more miss than hit. I purchased a second hand A9 board from US (I'm in UK), fitted it and now working perfectly. I did a compass calibration and it is flying well. Before replacing I had tried installing different firmware to try and repair the fault. I noticed yesterday that it is on US firmware, would it be advisable to change to EU, or is it better to leave alone now working.