The solution has been posted here
and here as well
1, There's no official EOL statement on en.miui.com yet
2, Xiaomi.EU maintainers announced that weekly ROMs are EOL for Mido.
Don't mix these statements, please.
No Xiaomi.EU announcement released yet about the future stable releases,
it's been said that when stable chinese V10.2.x.y will be...
Well, so you have no idea how to unlock it.. okay.
Not sure why you didn't Google it up already, but..
Kind of "official guide":
Another good one:
Hope you already have a Xiaomi account and you...
See my figures [here] - MIUI 10 has really good battery management IMHO.
Check some MIUI 10 videos and you can decide if you like it or not. There are some drawbacks (not all themes are compatible with MIUI 10, GCam and Cam2API is not working.. et cetera)
So it's up to you. MIUI 10 is not...
Did not experience this with dirty flash upgrade.
Both of the IMEI numbers + Wifi MAC + Bluetooth MAC are intact.
Did you check what was the baseband version in Settings -> About? Probably it was "unknown"?
You clean flashed the ROM - what kind of ROM did you use before this one?
See? Stable chinese has been released -> immediately after that Xiaomi.EU has been released.. okay, a couple of days later (after fixing an init setup crash situation).