Safe sufer firmare on GL-ax1800

installed safe surf firmware on GL-AX1800 flint model
now when trying to erase it will not erase
stuff i did

pull power push reset put power back til light goes white let go wait
add in ip and sub
scan network goes to ip and safe surf shows up again

just want to go back to oem firm wear that came out of the box

In my world, if you are using a different firmware, this project also should provide a tutorial/way back.

But the original firmware has a sledgehammer, the uboot method: Debrick via Uboot - GL.iNet Router Docs 4