In my last post I simply had the wrong hardware as I was shipped the incorrect item. Now, owever, I can confirm on the device's enclosure itself and in the Cudy web interface that I am indeed using an AP3000 Outdoor V1.0.
My question is now, how do I flash a firmware onto it?
I am using the firmware image openwrt-24.10.1-mediatek-filogic-cudy_ap3000outdoor-v1-squashfs-sysupgrade.bin from the firmware selector hosted by the OpenWRT team. However I seem to be getting this error after uploading the image to the web flasher of Cudy's: