Dear Samsung Member,
Greetings from Samsung Customer Support!
We are very sorry for the inconvenience caused to you regarding the software update in M30, we request you to kindly contact us through below channels so that we can asssit you accordingly. And provide you the resolution for the same.
kindly register your concern in Samsung Members app (Samsung Members app > Get help > Feedback > Error report/ask question).
Note: Please send device log files of issue occurrence along with the exact issue details.
Thank you for writing to Samsung.
Samsung Customer Support