Hello, Is the IOS DJI go app version 2.4.3 compatible with the 1.5.3 or 1.6.4 firmware of the Phantom 3 Pro? I'm currently using an iphone6 with IOS8. I'm currently debating whether to purchase a P3P. If 2.4.3 works with both versions of the P3P firmwares ... I think I might make the plunge. When I contacted DJI tech support, they said I would need to update my IOS DJI go app to 2.6.0 in order for all IOC features ... etc to work. Is the DJI tech support hype for real? Can someone with a similar setup (IOS 2.4.3 on iphone6 w/ 1.5.3 or 1.6.4) confirm that their system works?