[android-developers] Romain Guy/Diane Help!

So we have an app that we have preinstalled with the Toshiba Thrive, unfortunately, we have an update to the app associated with the impending launch on Sunday.  My question is this (and I have done some digging on the blogs, etc).  We don't seem to be able to detect that an update is available.  A typical app that was submitted to the market first, obviously detects if an update is available via the version numbers etc...but this doesn't seem to be the case with preinstalled apps.
Any insight to this would be a big help - thanks you two

Matt Powers
CTO Applico

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