https://www.androidsage.com/2021/04/16/download-oxygen-os-11-0-0-2-hotfix-ota-update-for-oneplus-7-7-pro-7t-7t-pro/
Download Oxygen OS 11.0.0.2: HotFix Android 11 Update for OnePlus 7, 7 Pro, OnePlus 7T, and 7T Pro