"Ssp update received" toast keep showing from time to time
I think it has something to do with the API demos, as I've searched google for this text, and found this:

https://android.googlesource.com/platform/development/+/master%5E1%5E1..master%5E1/

looking at the file it says, its name is "AppUpdateSspReceiver.java" .

It makes sense that very few know about this problem, as this app is mainly used for developers who wish to see what's new on the new version of Android, and how to use the new stuff.

I have no idea what is its purpose and what it tries to demonstrate - the comment there says "Executed when a new version of the application is is installed.", but it doesn't seem the case).

Anyway, uninstalling the API demos seems to solve the problem.

Can anyone please tell me what is this demo?