Root is attained by flashing a Packed rootfs.img file onto the device, and then using the sdb tool to execute the root on command. You need to understand what you are doing as there is always a chance you could damage your Smart watch, but whatever happens it will void your warranty.
Root can be thought of as getting full system access to the device, like an Administrator has on a desktop PC or in loose terms what iPhone users consider Jailbreaking their phone or tablet.
R380XXU0BNE5rootfs_root.tar (Needs Gear 2 R380XXU0BNE5 installed)
R380XXU0BNDDrootfs_root.tar (Needs Gear 2 R380XXU0BNDD installed)
R380XXU0BND8rootfs_root.tar (Needs Gear 2 R380XXU0BND8 installed)
R381XXU0BNE5rootfs_root.tar (Needs Gear 2 NEO R381XXU0BNE5 installed)
Here are some instructions on how to Load into Odin and flash your device with the downloaded firmware
In order to activate root you need the sdb.exe from Tizen-SDK, or equivalent file depending on your OS.
Disable camera sounds
sdb root on
sdb shell mount -o remount,rw /
sdb shell mv /usr/share/sounds/mm-camcorder/ /usr/share/sounds/mm-camcorder_bak/
sdb shell mv /usr/apps/com.samsung.w-camera-app/res/sounds /usr/apps/com.samsung.w-camera-app/res/sounds_bak
sdb shell mount -o remount,ro /
sdb root on
sdb push your_ringtone.ogg /opt/share/settings/Ringtones/
Keep in mind free diskspace is 80MB for /opt/ don't fill it up!