Скачать или смотреть Steps to Downgrade or Rollback Oneplus 8, 8pro, 8T & 9R from Stable OxygenOS 12 to OxygenOS 11

Here we have another guide to downgrade or Rollback Oneplus 8, 8 pro, 8T & 9R from Stable OxygenOS 12 to OxygenOS 11, If any one getting error of Installation failed do check out this video.
#Downgrade #Rollback #OOS12toOOS11

Download files to downgrade: https://techibee.in/steps-to-downgrad...
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