https://faqshop.com/sccm-2012/design-planning-cm12/site-server-cm12-dp/can-i-upgrade-a-pre-release-version-of-configmgr-2012-r2-sp1-to-2012-r2-sp1-rtm/ SCCM Tutorials, Help, Hints, Tips and FAQs Wed, 22 Nov 2017 14:35:23 +0000 hourly 1 https://wordpress.org/?v=6.8.2