Hello, I'm glad to help you solve the problem. I have met them before. The following is my personal opinion. I hope I can help you. Please forgive me if there is any mistake! . Because after the new 14.3 comes out, other versions can only be upgraded to 14.2. 1 through various applications. Otherwise the system will upgrade to 14.3 by default. Thank you very much for your patience. Please adopt it if it helps. Wish you a happy life! thank you