Correct Way to Flash Openwrt

I'm flashing openwrt on a gl.inet openwrt router. Is this the correct way to do that? https://www.youtube.com/watch?v=ktRq8WenbJw

I own a brand new (out of the box) beryl ax router. Is it correct to select sysupgrade image or factory image from the beryl ax page on the openwrt website?

The beryl ax comes installed with the manufacturer's version of openwrt. Is sysupgrade the correct download? Can anyone help explain the difference?

Hi!

Based on the video you provided, the process appears to be correct.

You can flash the native OpenWrt with downloading the sysupgrade image directly from the OpenWrt website.
Please be aware, however, that installing and using native OpenWrt falls outside our official support scope.