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    Issue: Upgrade to factory image 4.1.2 with Root Toolkit

    I would like to move to factory image (JZO54K) for my Samsung Galaxy Nexus S phone (i9020a) and to factory settings. Currently I am on 4.1.1 Build JRO03C. When I try to upgrade via Root Toolkit I get the following message on the screen <see image>. Any recommendations?