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Continue to ChatDownload Stable OxygenOS 12 C.15 for OnePlus 8, 8 Pro, 8T, and OnePlus 9R with March 2022 Security Patch https://www.androidsage.com/2022/04/15/download-stable-oxygenos-12-c-15-for-oneplus-8-8-pro-8t-and-9r/