femag , via OnePlus 8T , Feb 15, 2021 : Hi everyone! I bought my buds z a couple of weeks ago. They came with global firmware (328 version). Everything worked fine. Pop-up notifications, find my device, battery status in notifications and other features were available. After I updated them (352 version) I lost all these features. I recently found out this is the chinese firmware. I am not being able to go back to the global firmware version and technical support wasn't able to help. Did anyone else have this problem?