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Continue to ChatDownload Oxygen OS 4.0 for OnePlus 3/3T OTA and stock firmware | Stable Android 7.0 Nougat https://www.androidsage.com/2017/01/02/download-official-oxygen-os-4-0-for-oneplus-3-and-oneplus-3t-ota-and-stock-firmware-stable-android-7-0-nougat/