[Q] Stop app from updating

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http://forum.xda-developers.com – I know there are ways to stop apps from updating on both jailbroken iPhones and on Android. Is there any way to do the same on a Windows Phone? My Omnia 7 has a modified ROM and is fully unlocked. I have some apps that I want to use older versions, but ofcourse Marketplace alerts me that there is an update. Can I remove something that removes the notification from Marketplace? The no 1 reason I want to do this is to use the older 2.0 Whats App istead of the poorly update of 2.8. Thanx! (HowTos)