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Downgrading to OOS10 possible? via OnePlus 8

  1. This_is_varshney
    Froyo Apr 26, 2021

    This_is_varshney , via OnePlus 8 , Apr 26, 2021 :
    I am using latest Stable OOS 11 11.0.5.5 . Is downgrading to OOS 10 possible without bricking my phone? I am ready to get my data wiped.
    I saw rollback links a while ago on the forums, i want to make sure if they will work as they are supposed to from this update too.

     

    #1
  2. Tee_Eee_Bee
    Ice Cream Sandwich Apr 26, 2021

    Best Answer
    Tee_Eee_Bee , Apr 26, 2021 :
    You can use a rollback package from the open beta 1 thread - note this will wipe your device, so backup first - and then use the Indian A11 version.

    https://forums.oneplus.com/threads/...-11-open-beta-1-for-oneplus-8-series.1296568/

    OBT to MP rollback guidevia Local OTA update
    Note: This upgrade method will erase all the contents of the phone, please be sure to backup first.

    1. Download the latest ROM upgrade zip package from the specified server.
    2a. Copy the Rollback package to the phone storage.
    2b. Remove the '.jar' file extension if present by renaming the file using file manager
    3. Go to Settings -> System -> System Updates -> Click top right icon -> Local upgrade -> Click on the corresponding installation package -> upgrade -> System upgrade completed to 100%.
    4. After the upgrade is complete, click Restart.
    5. Update successful.

    Want to go back to MP? Download the Rollback package from the links below:

     

    #3
    Tower-1. and This_is_varshney like this.
  3. Cervantes
    Moderator Moderator Apr 26, 2021

    Cervantes , Apr 26, 2021 :
    Hello
    You don't have to unlock the bootloader, because it is the same system

    if you have problems you must reset to factory

    You have the rollback package in the first beta oxygen 11
     

    #2
    This_is_varshney likes this.
  4. This_is_varshney
    Froyo Apr 28, 2021