I'm download Factory(EXT4) image from: https://firmware-selector.openwrt.org/?version=SNAPSHOT&target=bcm27xx%2Fbcm2712&id=rpi-5,
and Burn the file to microSD,
Raspberry Pi 5 boots normally.
The problem now is that I can't access Raspberry Pi 5 with a browser on my computer (directly connected to Raspberry Pi 5 with an Ethernet cable, and the IP is 192.168.1.100).
In the terminal of Raspberry Pi 5, I can't see the Web service.
opkg update
opkg install owut
owut upgrade -a luci
After the reboot, you should have the LuCI console available on 192.168.1.100.
EDIT: Is your router on .100 or is that the workstation? I looked at your screenshot, and it looks like the router is at .1, so belay that last line above and try at https://192.168.1.1 for the router...