Hello, I try since yesterday to install openwrt, but impossible in serial, UART, when I press the key 4, the option is not taken into account, it normally starts option 2.
Impossible to flash the developer firmware through the interface, it tells me that it can't check the file.
I also tried to flash the developer firmware by putting it on a usb key and pressing the reset button at startup, without success.
Yes, this is the page I followed, but the developer firmware does not want to flash this, so blocked already from the 1st line. I really tried everything on this page, without success.
I suspect xiaomi has padlocked all the inputs since on the latest stock firmware, I flashed one in 2018 with no worries
Thank you very much, I am a fool, it is indeed a Mir3 that I bought thinking that it was a Mir3G. Thank you again, I could have searched for a long time.