Default [Q] annoying update notification

Hi, I tried system update download through system menu (Android 2.3.6), downloaded it but not allowed to install it. It asks when I want to remind it later. I set "none" and cleared "push message" setting. "auto update" was already cleared. But when I connect to wifi it still displays this annoying notification and ask want I upgrade it now or later. How I can disable this stupid message? Thanx.