As always: DO NOT AUTO-UPDATE your devices if you want to run exploits (e.g. to obtain root)!
Note: There are several apps on Homebrew-channel which need root - it is not obligatory though.
https://www.webosbrew.org/
https://github.com/webosbrew/webos-homebrew-channel
https://valkryst.com/posts/35.html
Disclaimer: I am not responsible for you bricking your TV. This is just a short collection of links for you to check out.
To enjoy all benefits of your LG webOS TV, you should consider rooting it.
Read how to root on page of homebrew-channel: https://www.webosbrew.org/rooting/
Update: There is a new exploit:
https://github.com/throwaway96/dejavuln-autoroot
guide on reddit (also possible w/o PC)
Also see on XDA if you can find what you search for.
Look for useful packages on github webOS Brew repo.
old methods:
https://github.com/RootMyTV/RootMyTV.github.io
https://github.com/illixion/root-my-webos-tv
https://blog.illixion.com/2024/04/root-lg-webos-tv/
it is/was(?) possible to downgrade (might need root, check!)
https://github.com/throwaway96/downgr8
https://github.com/reprodev/LGTV-Firmware-Downgrade