Info: they are not PRO, even if the label says "pro". those chinese fuckers fooled me. it got a f330 cpu instead a f396, which is used in the pro version. doesnt really matter in my case but still its scam.
Today i had to fix some stuff. they broke for some reason. one of the reasons could be the naze32, which doesnt have a diode on the 5v input. This could have booted them up over the bec board and when i applied power it could have fried the 3.3v regulator.
luckly a part with the same values and pinout fixed the issue. now i can fly again.