T40 codes

Issue:

A good time to use these is when you have an update fail and can check with these codes to see where the error is. This code will be in the background within the red bar. 

Another time to use this is trying to check all of the module firmwares. To get to this screen tap the drone icon in the top row on the main screen. Then hit the aircraft. Then tap the word aircraft firmware version 10 times. If these codes say null they could be faulty or not connected.