Turn off software update Ios5?

Is there a way to turn off software update notifications on 5.01? Wife's phone shows a message that 5.1 is available but as it j/b I don't want her to accidentally upgrade it
Oddly mine - same phone and same Ios doesn't do this?

Download No Update from Cydia.

Thanks, installed that but it still shows the small red 1 on the top right of the settings icon? Was trying
to get rid of that as well

try deleteing meta data inside the setting app (with ifile) and also updateing blocked if your jbed

Just saying, it's impossible to accidentally update if it's jailbroken since it'll download but it'll give you an error.

I had the same issue, get BadgeClear from cydia its amazing. It will clear the red notification on settings, did the job for me! And I used it on the App store and other apps to clear the notifications on them that I didn't need reminding of.
And also make sure to get yourself No Update from cydia as mentioned by C0C0 above.

Just edit the SystemVersion.plist in Root>System>Library>CoreServies. Change 5.0.1 to 5.1. Also I suggest you delete the OS update launch daemon, there is a guide on here to do that.

That can cause a few problems.
You can do it this way though.