Moved to https://reeywhaar.github.io/posts/debricking-xiaomi_4c/
A short preamble. If you don't want to read how i've bricked my router go to the next chapter "Debricking".
I've bought a Xiaomi 4c router on my trip so I can make it work in hotspot mode. Router connects to hotel wifi and then I connect to its private network, so all my devices are not reachable from the hotel network. Even though I saw that the router supports such mode in reality there was none. So I decided to install OpenWrt. Long story short I've installed it and made it work. My verdict is that though theoretically OpenWrt works practically, it works unstable. After some time the router just stops to respond, either via ssh, web front, wifi connection, etc... When my hotel days were over I decided to restore the original MiWifi firmware. I downloaded one on official website: https://miuirom.org/miwifi/mi-router-4c
By the time of this