Hi there,
the build from 27.05.2021 should work (short tested but not the Guest-WLAN see "note").
QAuges repositorie is the main developing branch he is the guy with the know how
My xrx200-3 is the latest branch it is a adjustment from QAuge on Openwrt + some PR and other stuff for other xrx200 Router
(futured branch will called xrx200-4, -5, ... usw.)
but without some small changes without uboot and the WLAN, screen and touchpad driver
(the extra driver are here: https://github.com/Plonkbong/openwrt-feeds-easybox904-driver
and extra packages here: https://github.com/Plonkbong/openwrt-feeds-easybox904-minpkgset most of them for a working screen)
If you want to see how i exact build them on 27.05.2021
You can see it on openwrt_download_xrx200_snapshot-20210527.191445.tar.xz here are build scripts inside which is my build reproducible
see fullowrtbuild-eb904x.sh and them the function: openwrtsource_prepare.
Here are what i have exact done on 27.05.2021
But
I fear that the openwrt developing is going on and the branch will not working now.
When the underlying openwrt have some small lantiq changes it cost much time and energie to adjust the own branch.
The adjustment sucks and is not possible in future the only solution is to add them to openwrt.
But there is not much interrest to add this Router.
Possible reasons why the fullimage fail:
The fullimage are the init-ram-kernel image, it must be smaller them 5MB, because the kernel-partition where it be write to is ca max. 5MB.
The network configuration was generally changed and the default network configuration is not working.
A short workaround after patching is this:
sed s/"add_list "/"# add_list "/ -i target/linux/lantiq/base-files/etc/uci-defaults/80_wifi_setup