I turned on my phantom 4 pro, right when I went into DJI Go, it said something about firmware not matching so it began updating when it was done I power cycled the drone & remote, now it says aircraft disconnected & weak video transmission, what the hell is this?  my firmware is V01.04.0602, I really need to use the drone tomorrow & I don't know what to do, any help will be greatly appreciated.

OK, I just noticed dji go app said remote needed update, I installed new firmware, all is good

Glad to hear you have figured it out soon. Thanks for keeping us posted. Enjoy it!