Sorry, Maybe I didn't make it clear. Let's take a picture.
The information I got from vive focus is that its android version is Android 7.1.2 and it supports up to API 25. But some of my features are only available in API 28, so I wonder if there is any way I can manually upgrade the focus's Android version .
Re: Can I upgrade the Android version of Vive Focus?
The quick reply answer is no, _you_ cannot replace the android platform API Level 25 yourself, as the rom is locked however if the question is when we will update to a later API Level, that's what we'll have to get back to you about regarding future Wave SDK updates.