Downgrade MIUI 12 to 11

[Wywern]

I am now on MIUI 11, eu ROM 20.3.26 and thinking to upgrade to newest MIUI 12 - 20.6.18, due to some problems with WiFi connection with my Gigabox router
But question is - could I rollback in case of any problem?

 

[Viselu]

I am now on MIUI 11, eu ROM 20.3.26 and thinking to upgrade to newest MIUI 12 - 20.6.18, due to some problems with WiFi connection with my Gigabox router
But question is - could I rollback in case of any problem?

Yes you can rollback but you have to format data because the newer version is incompatible with the older one.

Format system, data, dalvik, cache and install the miui 11 zip