I'm at 1.3.2 because it works. The original 1.4.01 didn't. So I downgraded and started testing. I haven't tried to update again because I got it for video footage and it's flawless right now. But I did eventually find that the problem was a sd card that came with it as an extra from Drones Etc. I was having the no video signal issue with the 1.4.01 but it was caused by the extra sd card not installing the 1.4.01 update correctly. I will update if needed in the future but I use an old Note 3 for the screen and I'm happy with it.