Is it safe to downgrade an iphone app to a previous SDK?
<p>I have released an app with the 2.2.1 SDK, to realize that I'm pointlessly losing a big percentage of customers still on firmware 2.2 (See this article: <a href="http://arstechnica.com/apple/news/2009/03/app-store-lessons-firmware-followup.ars" rel="nofollow">http://arstechnica.com/apple/news/2009/03/app-store-lessons-firmware-followup.ars</a>) So I'm thinking of updating the app to the previous SDK, 2.2.</p>

<p>I was wondering if anyone has run into any problem doing this? Is this safe for customers who have already installed the previous version, to install my "downgrading" update?</p>
