Just got my P3A....havent flown yet. Doing my head in reading all about firmwares, and whats a good one, and whats not, and whether to update firmware. My P3A has version 1.4.10+ on it. Do I try and downgrade it to version 1.3.20 (which seemed to be quite favourable)?, or do I update to the latest 1.6.0040 ? Thanks.