Yeelight Lightstrip Update Problem

I just bought the Yeelight Light Strip. When I worked on it in an earlier default update it was all fine but when I did the latest firmware update 2.0.6_0073 (which took me 10 attempts to do it) so I could connect it to the Apple HomeKit (which I couldn’t) in the flow mode the color change started to lag and the LEDs flickered. How can I fix that? Im at European server and my MI ID is 6339664282.
Thank you!