Hi I have a unrooted AT&T Note 4 that I'm trying to update to 5.1.1, and I downloaded the OTA 5.1.1 update and I had no problems, but after it finishes and reboots to the black screen and it try to install and every time I get a error message that says " DM Error" . Which I'm pretty sure means Digital Media(maybe it thinks I'm rooted, I remember that you couldn't use Google Video if you were rooted, and it had something to do with the same digital media. I've tried probably 10+ times with the OTA, and called Samsung and had me download a program (that wasn't Kies) to try and update it that way and that didn't work either? Is there anything else I can try?