Update BES 10.1.1 to BES 10.2.0
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I want to update my BES 10 to BES 12 but one of the prerequisites is that the BES10 must be in 10.2.3 version. So my question is, I can update my BES 10.1.1 executing directly the BlackBerry Enterprise Service 10 Service Pack 2 - Full Installer with posted date 12-Nov-2014?
Besides I have to install the MRs? I have doubts because the MRs are older than the service pack 2.