How can I downgrade from Android 6.0 to Android 5.1.1 in Spice Dream Uno Mi-498H?

[AC Question]

How can I downgrade from Android 6.0 to Android 5.1.1 in Spice Dream Uno Mi-498H?
I want to downgrade because after the upgrade to android 6.0 network is not proper. I also think that the downgrading will fix the issue.

 

[belodion]

Welcome.

May I ask why you think that? Have you read about it as a known problem following the update?

First, try a Cache Partition wipe. Tell us what that does.