Is it possible to use a custom ROM?
Genymotion uses only the stock AOSP vanilla ROM version of Android. We legally cannot distribute custom ROMs or custom interfaces, especially the ones from manufacturers. Touchwiz is a proprietary touch interface from Samsung that isn't available for licensing by external parties. It is also impossible to import a custom ROM of Android into Genymotion, or modify the current ROM, for technical and legal reasons. So, you can't import and use CyanogenMod in Genymotion.
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