tried to do that, got these errors. Maybe my client type is wrong?
root@OpenWrt:/tmp# sysupgrade -n open_wrt.bin
Device xiaomi,mir3g-v2 not supported by this image
Supported devices: xiaomi,mi-router-4a-gigabit - Image version mismatch: image 1.1, device 1.0. Please wipe config during upgrade (force required) or reinstall. Reason: Config cannot be migrated from swconfig to DSA
Image check failed.
root@OpenWrt:/tmp#