Hi Xiaomi Mi router 4a gigabit owners,
In case you are not aware im still updating v19.07 stable for this device, but only on a stable release and nothing more.
Latest version - v19.07.8
I use the official config build and nothing more from now on. This allows for the official software repo to be used with no issues.
You can build your own image using the imagebuilder in each release i make.
Convenience scripts to build openwrt is in my source code - ./build.sh
NOTE: v21.02 is still in release candidate mode, so will not improve that until becomes a stable release.