What is the solution of panic full in iphone x?

Those are Apple messages, and only Apple engineers can interpret those messages. Are you experiencing a problem with your device, or were you just looking around? If you wish to get an answer to those messages, you can use the Get Support link at the top of the page here and contact Apple Support.

Are you seeing some type of error message on your iPhone? If so, can you provide a screenshot of it or type out the exact text of the error?

Who asked you to change the board? Who have you been talking to?