By the way, I wanted to present my case. I have installed this version we are talking about, 12.5.4. I have installed it as I always do, from scratch and clean of traces. (from an external SD, in which only the ROM file is copied) and from TWRP, Orange fox .... or whatever modified recovery, I install it.
With this version I have done the same. I wanted to try it because the version I had before, 12.5.2, was very slow (I don't know if it was due to a virus or something weird, but it was terrible). This 12.5.4, I installed it, configured it, put all my apps in it (which are many), and I like how it goes. The next day, I restarted the phone, and... suddenly, it was not able to start, that is... the phone started, passed the MIUI logo, came to boot the system, but it got very clumsy, no It responded to the touch, and it turned off, like that a few times... and in one of those times, it started, and now it's working fine.... but of course, I don't want that if I need to restart the phone or turn it off... .when you go to turn it on, that it takes a long time to start or that it does not start at all...
Is that what happened to you?...and that option to reinstall 12.5.2, is it simply because 12.5.4 doesn't start?, I hope I explained myself well...thanks
Apart from this topic...these XIAOMI EU roms are, logically, modified...but, the originals from xiaomi, are they the ones called GLOBAL?, or does that have anything to do with it?. because I have read on several sites, that the GLOBAL ("original"), which are better, some than another. Me, the issue of putting the EU is because of the issue that they have incorporated the call recording option, you know, because of the issue of Google's privacy...