Yes, that's how I unlocked my unknown sources. I would have loved to been able to do so the running codes way, but I'm just not that comfortable doing that. Couple bucks to make my phone MINE seemed worth it to me. Plus, since I have link2sd, when I installed it, it immediately linked it which makes the app think it was uninstalled which resulted in a refund, but I was able to keep the app. So I got the app free and still enabled unknown sources. I would gladly pay the dev tho for his hard work.
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