Hi, can someone help me with uploading VR applications on Meta Lab?

Let me explain why I want to use Meta Lab. I have developed 8 applications in Unity that I have distributed to clients across Italy as APKs installed directly on the headsets. Now I need to update these applications, but I don’t know how to do it without going to each client and doing it manually on each device (800 devices all over Italy).

How can I resolve this? How can I update my apps without going through this whole process? What improvements can I make to the apps?

Thank you very much!