Here is how to install OxygenOS 9.0.12\/9.0.4 for OnePlus 6\/6T. OnePlus announced the latest security patch with OxygenOS 9.0.12 \/ 9.0.4 for OnePlus 6T and OnePlus6. Recently the Chinese company started rolling out the OxygenOS 9.0.12 for the OnePlus 6T and OxygenOS 9.0.4 for the OnePlus 6. This latest update comes with January 2019 security patch to fix the bugs and many other security issues. This latest update is an incremental update and brings some new features and customizations for your OnePlus 6T and OnePlus6. Here we share a simple step by step guide on how to download and install OxygenOS\u00a0 9.0.12 \/ 9.0.4 for OnePlus 6T and OnePlus6. The OxygenOS 9.0.12 \/ 9.0.4 update is rolling out via OTA in phase wise manner. So if you have not received any notification of the new update then you can install OxygenOS 9.0.12 \/ 9.0.4 for OnePlus 6T and OnePlus6 manually. According to the changelog, the new update comes with many new features and customizations such as Optimizations for Screen Display, Deep integration with Google Duo, General Bug Fixes & Software Improvements, Updated Android security patch to January 2019 and much more. Given below we share a full firmware link for your devices. Then you can just download and install it by following instructions. We are highly recommend you to always keep updated your Android devices to the latest official stock firmware which is released by OnePlus. If you are interested in installing OxygenOS 9.0.12 \/ 9.0.4 for OnePlus 6T and OnePlus6, then go ahead and follow the given steps. Note: This guide containing the rooted and cleaned stable OxygenOS 9.0.12 \/ 9.0.4\u00a0 You can use this firmware update for the OnePlus 6\/6T devices only. Do not try to install this firmware on any other device or incorrect variant. Check the model number of your device first. Warning: AndroidBlog.gs will not responsible for any kind of damage occurred to your OnePlus 6\/6T device during or after the installation of stable OxygenOS 9.0.12 \/ 9.0.4 Update. Proceed at your own risk. Pre-Requirements: \tCreate a proper Nandroid backup of all your existing data and settings on the phone before proceeding to the installation guide using a recommended custom recovery. \tEnable USB Debugging Mode on the OnePlus 6\/6T by navigating to Settings > Developer Options. \tVerify that you\u2019ve properly installed the OnePlus 6\/6T USB Drivers on the PC. \tYour device should be rooted with the latest version of a custom recovery like CWM or TWRP installed. \tThe bootloader of your OnePlus 6\/6T must be unlocked. \tMake sure that the battery level of the device is above 80% before going ahead. Required Files: \tDownload OnePlus 6T stable OxygenOS 9.0.12 OTA Firmware \tDownload OnePlus 6 stable OxygenOS 9.0.4 OTA Firmware\u00a0 Check Popular Posts: \tHow to Install Stock ROM \/ Factory Image on Razor Phone \tFlash Android Oreo on AT&T Galaxy S7 & S7\u2026 \tInstall MIUI 9.2.6 Global Stable ROM for Redmi 4A \tDownload and Install OxygenOS 4.7.6 on OnePlus 5T \tInstall Android 8.0 Oreo Beta 2 Official Update On Xiaomi Mi A1 \tFlash Sony Xperia Music App on Android Devices \tDownload and Install FreedomOS on OnePlus 5T How to install OxygenOS 9.0.12 \/ 9.0.4 for OnePlus 6T and OnePlus6 Update: Step No 1: First, set up ADB and Fastboot on your PC. Step No 2: Download the stable OxygenOS 9.0.12 \/ 9.0.4\u00a0 official file on the desktop of your PC from the above-given link and rename it to ota.zip Step No 3: Next, Enable USB Debugging on your Oneplus 6\/6T by navigating to Setting > Developer Options. Step No 4: Connect your OnePlus 6\/6T to your PC\/laptop. Step No 5: Open the folder where you have placed the downloaded OTA.zip file and open command windows within the folder. Step No 6: Type the following command and hit Enter to reboot your phone into Recovery Mode. adb reboot recovery Step No 7: Select the\u00a0\u201cInstall from USB\u201d option in Recovery Mode. Step No 8: Type the following command and hit Enter. adb sideloaded ota.zip 9: The installation process will be initiated, so wait for the installation process to be completed. Once the process completes, select reboot from the main Recovery Menu. Done! These were the complete steps to install OxygenOS 9.0.12 \/ 9.0.4 for OnePlus 6T and OnePlus6 update.