Installing Ubuntu in Asus Chromebook C423NA-BZ0522

A Chromebook with Intel Celeron Dual Core N3350 - (4 GB/64 GB EMMC Storage/Chrome OS).
Has anyone flashed it off chrome and installed any other OS?

If yes, please provide a step-by-step guide on how to do it for this model. This is the store page for the chromebook

It’s very easy go to coolstar.org and click on ‘Install’ then select “asus” and N3350 and then Chromebook C423 NOT THE FLIP ONE and follow the guide for it to get audio on windows you have to buy the driver but for linux just follow the instructions only till the Devloper Mode / Flash Firmware "DO NOT DO ANYTHING AFTER THAT!!" alright and then just let it book normally alright then click on “ESC” when it shows esc to boot menu and then click on boot menu I assume you have flashed ubuntu to a flash drive if not use : Balena Etcher for it then by the way you will have to use your enter key to choose stuff in the BIOS
Links- https://coolstar.org/chromebook/windows-install.html