OxygenOS 9.0.8 and 9.0.16 OTA for OnePlus 6 and 6T is rolling out now, and it will take few days to complete it. Here is the download link for OxygenOS 9.0.8/9.0.16 OTA and full ROM that you can use to update your device via Local Upgrade.
Before downloading the firmware, let us see what are the changes caries this update. Here’s the complete changelog:
System Optimized pocket mode Fixed an issue with apps failing to respond Fixed an issue to unlock apps successfully using fingerprint when the screen recorder is turned on Added Quick reply in landscape mode (Settings – Utilities – Quick reply in landscape) Android security patch updated to 2019.08 General bug fixes and stability improvements Launcher: Added password settings for Hidden Space Gaming Mode: Introduced brand new Fnatic mode for an immersive gaming experience, More surprises on the way Zen mode: Added additional Zen mode features OnePlus Laboratory: Added the DC dimming feature Communication: Support VoLTE/VoWiFi for Bouygues
OnePlus starts rolling out the OTA update. If you haven’t received the update notification on your device, check it by going to Settings > System Updates > Check for OTA updates. Alternately, download the full OTA/full update zip file from below link and install manually.
Download OTA/Full ROM
OnePlus 6 OOS 9.0.8 Full ROM (download) OnePlus 6T OOS 9.0.16 Full ROM (download) OxygenOS 9.0.7 – 9.0.8 OTA (download) OxygenOS 9.0.15 – 9.0.16 OTA (download)
To install the firmware update manually, all you need to save the downloaded zip file in the root directory (not in any folder) of your OnePlus device, go to System updates menu and choose Local Upgrade. Your phone will start installing the update. (source)