The screen went black. Then, a single line of white text appeared: Mounting filesystem... Update successful. Welcome back, Elias.
In broader Linux systems (the foundation of Android), these directories have slightly different roles: Mnt Media-rw Udisk Update.zip
adb shell su mkdir -p /mnt/media-rw/udisk mount -t vfat /dev/block/sda1 /mnt/media-rw/udisk The screen went black