How to switch off automatic system and app updates?

I'm fine with updates in general, getting rid of bugs is fine after all, but when I just want to quickly play a short game in my break while the OUYA determines there is an update and applies it without any chance of intervention, this is rather annoying. The same applies to the game itself - once an update is available, I cannot start it until the update was applied. So

How to change the update behaviour such that I only get a notification about updates being available, while manually choosing when to apply them?

Hint: I know I could detach the OUYA from the internet, but a) using WLAN this means I have to either switch the OUYA WLAN off/on manually or kill my WLAN router and b) an available update shouldn't prevent me from using apps that do require internet access, e.g. the web browser

Solution 1:

This OUYA forum says that:

You can go into the advanced settings, scroll down to Accounts, click OUYA, and uncheck Updates. I don't know if this actually works for OTA updates, but if there is a way, that would be it.

This would suggest that there is a way of turning off updates but they aren't sure if it applies to everything.