If you go from 6.4.21 to 6.4.28, than it is better to wipe cache and dalvik, but not necessary. No need to wipe date.
If you would go from 6.4.28 to 6.4.21, than you would have to wipe cache, dalvik and data.
Redmi 2 / wt88047 - 1GB works smooth so far.
No FC in "Settings"->"More" or "Settings"->"Additional settings" in english and slovenščina.
My procedure of installing weekly update; enter TWRP -> wipe cache and dalvik cache -> install rom -> wipe cache and dalvik cache -> boot to system.
Thanks.
I can find stable MIUI v7.1 (https://www.androidfilehost.com/?w=files&flid=36337), but not MIUI v7.2. MIUI v7.2 was officially released.
I am not in a hurry, just asking. I have seen that the Redmi 1 (hm2013023) was discontinued.
I think this it due to system requirements - for example USB key with 512MB has only 465MB available free space. But someone with more knowledge may correct me.
I have bought Hongmi 1s WCDMA and I am not sure if it is the real deal or fake. Is this the official multilanguage version or your unofficial? Below are few screenshots from ROM, CPU-Z and Antutu X.
Thanks.