Flash EMMC on CM3 with the E23 Board

I have a radxa CM3 module with a 16gb emmc and i would like to flash the OS to that eMMC , but some of the suposed pictures in the guide (https://wiki.radxa.com/Rock3/installusb-install-radxa-e23) are not present and there is only a 500px text instead. Does anyone has maybe a better guide or better, a video tutorial?
Thanks

I am sorry that the current document is not perfect and we are working on editing it.

We don’t suggest flashing from USB OTG for E23 at the moment, currently all the E23+CM3 are shipped without eMMC. We recommend to use uSD card instead. This is because with current E23 carrier board design(v1.1), the USB OTG is on the 40P GPIO header, which requires special usb cable to flash to eMMC. We plan to change the USB OTG to the USB C connector on v1.2 and later. To avoid confusion, the usb flashing instruction will be updated for v1.2 also.