Be aware this is not an official global ROM, its unofficial (works well but just so you know).
There will likely never be an official global ROM unless Xiaomi decides to release globally.
There have been reports of inconsistency i.e. some people have a 360 hour wait, others 720, others instant. Although there's a ton of speculation, nobody's been able to work out a definite pattern or cause. Just count your blessings and move on!
So you can dirty flash weekly [xiaomi.eu_multi_MIPAD4_8.12.13_v10-8.1] over stable [xiaomi.eu_multi_MIPAD4_V10.1.1.0.ODJCNFI_v10-8.1] ? good to know. Its confusing because they use totally different numbering.
If I'm using xiaomi.eu_multi_MIPAD4_V10.1.1.0.ODJCNFI_v10-8.1 can I upgrade (dirty flash) to xiaomi.eu_multi_MIPAD4_8.12.13_v10-8.1? I assume xiaomi.eu_multi_MIPAD4_8.12.13_v10-8.1 is newer despite the numbering as its later date / MIUI 10.2?
re: Sim Card and wifi, I am using wifi only model...
They're doing it to hinder re-sellers from flashing grey market ROMs with malware/adware etc. and then ruining their reputation (as normal buyer would not know anything about ROMs etc. and assume Xiaomi is spamming them with ads etc)
I'm getting really, REALLY slow speeds on 5Ghz wifi. 2.4Ghz wifi is perfect. Anyone got a fix?
Didn't happen with stock.
Edit: fixed with channel change from 36 to 44. Anyone else have issues on 36?