GL-MT300N-V1 OpenWRT back to OEM firmware

I flashed OpenWRT 22.x from their repository and then decided I wanted to go back to OEM. Since OpenWRT does not undertand the GL-iNet images, I powered into the bootloader by holding down reset and flashed the 3.100 firmware that way but it did not revive the router completely.

Did I miss a step?


Please don’t use 3.100, use latest 3.216