ce to fcc mod

Hello, I habe a Phantom 3 SE and to be honest I can‘t di this anymore. I‘m in Italy and I want to fly in FCC mode to fly further, all the solutions are outdated. I tried a lot, nothing works anymore. Please, if someone can help me to put my drone in FCC mode, I would be really greatful.

Let me start the long story short... The P3SE's, depends on where did you buy it from, can have 2 factory settings, the FCC and the CE by default. The range of this bird in CE mode is around 5-600m (not urban area obviously). FCC mode takes you 2-3km away, depends on... I was 2km away with...

Every ce user has worst signal than fcc users and we are looking ways to make it better. Like installing antennas (safer way) or hack the rc and drone to force system to fcc mode (dangerous way). Okay we installed the antenna but system can give you more if fcc mode is on but hacking the unit...