To flash first open odin tool. then select bl file to bl, ap file to ap , cp file to cp , csc file to csc , after file are selected then Download mode ke liye press volume up and down and connect usb cable you are go to the phone download mode when you show samung port then click start your mobile has flashing ...thank you♥️ after flash your mobile version isAndroid 10 or usme m ye trick kaam kregi😁♥️