By default, the bootloader LG KS20 is locked on the phone. This is done so that the novice user does not make a fatal error while editing the device kernel and does not turn the phone into a brick.
Advantages of Rooting your LG KS20
You can download third party or custom applications with higher permissions for Windows Phone OS
Easy removal of system (pre-installed) applications
You can back up your phone as well as access the file system in storage mode.
Installing mods and patches on the current OS version
Disadvantages of Rooting your LG KS20
Warranty will be void
You will not be able to update the phone to the latest version.
It can brick your device.
Might Expose You to More Security Risks.
How to root LG KS20 with Computer (via Windows Phone Internals)
Before starting the rooting process, follow these steps.
1. Backup Your Device.
2. Make sure your battery is charged to 90%.
3. Just to be safe, reboot your device.