Sir I also got latest security update on my note 20 ultra, but didn't get any green or pink line. It's only happening after moblie is dropped, and pixel breaks . This incident also happens with me in November 2023, with green line after updating, and samsung has help me with changing my note 20 ultra display, frame and battery free of cost.
Kindly mail your problem to ceo samsung India, in mail tell all your problem, and request them to see in your case. If possible show your mobile to samsung care centre and get copy of jop chart. As you has to send with your mail. After that they will contact you of further process.
