this tutorial is working well, funny part is to switch it from chinese back to english which is somewhere inside luci so i clicked on random until found it
actually now im back to last xiaomi update MiWiFi Release 3.0.22 with SSH and i found out that im able to install opkg packages.. it also looks like this release is based on 18.06 release of openwrt as opkg want to download from following addresses
root@XiaoQiang:/# opkg update
Downloading http://downloads.openwrt.org/releases/18.06-SNAPSHOT/targets/ipq807x_64/MiWiFi/packages/Packages.gz
wget: server returned error: HTTP/1.1 404 Not Found
*** Failed to download the package list from http://downloads.openwrt.org/releases/18.06-SNAPSHOT/targets/ipq807x_64/MiWiFi/packages/Packages.gz
Downloading http://downloads.openwrt.org/releases/18.06-SNAPSHOT/packages/aarch64_cortex-a53/base/Packages.gz
Updated list of available packages in /var/opkg-lists/openwrt_base
Downloading http://downloads.openwrt.org/releases/18.06-SNAPSHOT/packages/aarch64_cortex-a53/base/Packages.sig
Signature check passed.
Downloading http://downloads.openwrt.org/releases/18.06-SNAPSHOT/packages/aarch64_cortex-a53/packages/Packages.gz
Updated list of available packages in /var/opkg-lists/openwrt_packages
Downloading http://downloads.openwrt.org/releases/18.06-SNAPSHOT/packages/aarch64_cortex-a53/packages/Packages.sig
Signature check passed.
Downloading http://downloads.openwrt.org/releases/18.06-SNAPSHOT/packages/aarch64_cortex-a53/routing/Packages.gz
Updated list of available packages in /var/opkg-lists/openwrt_routing
Downloading http://downloads.openwrt.org/releases/18.06-SNAPSHOT/packages/aarch64_cortex-a53/routing/Packages.sig
Signature check passed.
Collected errors:
* opkg_download: Failed to download http://downloads.openwrt.org/releases/18.06-SNAPSHOT/targets/ipq807x_64/MiWiFi/packages/Packages.gz, wget returned 1.
root@XiaoQiang:/#
my / is read-only but im able to use "opkg install -d ram mc" and then /tmp/usr/bin/mc which is awesome i hope that somebody can point me in direction that i will be able to install packages permanently
xiaomi miwifi running mc from ram