OnePlus has released the OxygenOS 11 public beta firmware to the OnePlus 7 and 7T series, so users who want to try Android 11 as soon as possible can use it now.
You should be aware of some known issues. In some cases, the brightness adjustment may lag behind, and some Bluetooth-connected devices may sometimes not produce sound, which may result in increased power consumption and decreased stability.
In turn, these devices will get the fully improved OxygenOS 11 with many features (new icons and UI, environmental display, new Shelf interface, new camera UI, functions and HEVC codec support).
You can find the download link in the source link below. You need to have a supported unlocked device, download the ROM upgrade zip, copy it to the root folder of your phone, navigate to “Settings”> “System”> “System Update”> “Local Upgrade” on your phone, then Follow the instructions.
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