follow the below solution, it works fine
https://r2.community.samsung.com/t5/Galaxy-M/Galaxy-M31-April-1-system-update-bricks-phone-Only-solution-is/m-p/4005901#M87025
Hi feroz, as you know we are already getting blue downloading screen:
1) can I directly connect my phone using USB cable and start performing the downgrade.
2)Which all md5 files to be added, i dont wanna lose my data?
thanks