Color problem after update

Today I updated to 1.4.2-0024 . After update suddenly res is not red anymore . Same problem with blue. Or green. All is something like soft purple. Also since update Google home can’t change the colour.
I tried Xiaomi app and yeelight app. With Xiaomi app colours works awfully with yeelight I can get a little stronger but not smooth transitions anymore.
I use to handle the bulbs with Google home, now I can’t use it anymore. Anyway to downgrade to previous firmware 1.2.4_0016?