So I got my new Phantom 4 the other day. I also picked up a 128GB Lexar 633x Class 10 UHS-I MicroSD card as I read it works fine in the copter. It did work, for a couple of flights but now the card itself is saying its write protected and I cannot format or write to it in any way. I’ve tried to format in the copter, PC and camera but nothing will do it. There’s no switch on the card to lock so it must be a software thing or a dodgy card. Amazon are send me a replacement so it’s not the end of the world. Anyone else have an issue like this? Anyone using this card successfully?