OxygenOS Open Beta 3 was released for the OnePlus 8 and 8 Pro just before the end of October, but there was a mix-up. Some users received the stable update, version 11.0.1.1, instead of the beta, and installing that leads to a full wipe. If you’re received the wrong update but haven’t restarted the phone yet, you should download this APK. This is a specially-designed app with that will help preserve your data, you just need to install it and hit the “Keep data” button. Update notification for Open Beta 3 • Stable version of OxygenOS - this will wipe your data Even with the...
Source: https://www.gsmarena.com/mistake_in_the_rollout_of_latest_beta_for_oneplus_8_and_8_pro_wipes_some_users_data_heres_what_to_do-news-46194.php
