Below is a bullet from my tips post. Is that what you are asking?
> AC FW 1.8 and RC FW 1.6 were released together with an encryption change. If you have one (or later), you must have the other (or later) or you will have issues. DJI also noted this in the release notes, but even so we have seen several people here who were not aware and inadvertently created an encryption mismatch.
Ok thanks .i have no idea how to fix my problem thanks for trying to help me an honestly i am a bit slow.but i am capable.my controler is GL300C.initially.i had a phantom 3 advance.i bought a phantom3 pro.but im haveing difficulty connecting im very close because camera shows live feed but it says update firmware my controier 1.9.2 is default set to 1.9.2