I have a Samsung S9......Something happened during an update and now it wont even shut off....it continuously blinksfrom the opening Samsung screen to a blank screen....If I hold the buttons the only thing it will let me do it start the update process again.....everytime it gets to 30% I get an error message ,then back to the blinking screens......Never saw anything like this before.
Best answer by Dinh
The guy at the Walmart tried the factory reset.....he could not do it
The you would have to contact Samsung (the link is above) for further instruction . It seems to be a software issue.
Here is Koodo hardware warranty policy https://www.koodomobile.com/help/warranty-and-repair-policy if you think your phone is under warranty and there was a manufacturer defect, you could contact them.