As my understanding of reading the info the last Miui Weekly is going to be on 16th of November, this release is the Penultimate http://en.miui.com/thread-1083718-1-1.html, so i ask are you going to release the ultimate on the 16th for this devices?
Maybe i can help but i need to acess by remote if you want
by teamviewer
https://download.teamviewer.com/download/TeamViewer_Setup_pt.exe
if you want send me a PM
If you installed android 7 latest developer rom, you need to unlock bootloader again and install twrp again just do what i mention before on above mensage
To install TWRP
Download latest recovery https://www.androidfilehost.com/?fid=673368273298930581
extract and put the recovery.img (rename if other name) on adb
Start Windows command prompt by pressing <Windows key> + X and then choosing "Command Prompt (Admin)". Once console (black box) opens...
make sure if you have locked/unlocked bootloader
enter in fastboot
in Cmd type
fastboot devices
fastboot oem device-info
if the info said device locked True you have to aplie for unlok if you whant to install xiaomi.eu rom
and install twrp
To install TWRP
Download latest recovery...
by the way what is says when you do
in Cmd type
fastboot devices
fastboot oem device-info
it says bootloader locked False or Bootloader locked True?
it is strange you have miui 7.3 by xiaomi.eu 5.3.24 beta and locked bootloader
The twrp must be the one ive linked it is not official. It does not exist official twrp
And yes first flash 6/12/22 and then the latest developer rom. Then you have to unlock bootloader again because the upgrade to android 7 lockes the bootloader again (shame on xiaomi) and flash twrp again
if you are already on latest developer rom (android 7)
just see if your bootloader is unlocked
enter in fastboot mode and
in Cmd type
fastboot devices
fastboot oem device-info
if it says bootloader locked False you have unlocked bootloader and can flash again the twrp if not wait until you get...