Hi @FredyVia - were you able to unbrick your xiaomi with this cFeon chip?
I have a device with the same chip (QX128A-104HIP) also in a bootloop, but I have not been able to recover it after a failed OpenWRT flash attempt...
I was able to recover it using tftp method after a first attempt. But after a second attempt with the latest OpenWrt, it will no longer accept the 3.0.24 xiaome firmware anymore.
see Xiaomi R4A Gigabit International - Can't unbrick 2nd time - Installing and Using OpenWrt - OpenWrt Forum for more...