I made a convenient tool for installing factory images or for revert to stock firmware.
This package facinstall_1-0_all.ipk can be installed on any version of OpenWrt (but not lower than v21).
Supported routers
asus,rt-ax59u
asus,tuf-ax4200
asus,tuf-ax6000
xiaomi,mi-router-3-pro
xiaomi,mi-router-3g
xiaomi,mi-router-4
xiaomi,mi-router-ac2100
xiaomi,redmi-router-ac2100
xiaomi,r3d
xiaomi,redmi-router-ax6s
Source code: https://github.com/openwrt-xiaomi/facinstall/tree/main/files
Screenshot after check Xiaomi stock image:
