Hello! I am currently attempting to install LineageOS on my OnePlus 9 to start degoogling it.

The installation guide specified that I specifically need to be on Android 13 to install it, however I am currently running OxygenOS 14 with Android 14. Previous versions have had Open Beta threads for new OxygenOS versions which provided local rollback packages but I can't seem to find this for 14 to 13 for the life of me.

Has anyone else had this issue? How did you solve it? Any help is appreciated!

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[–] 5 points 2 years ago (1 child)
  • [–] 3 points 2 years ago (1 child)

    Doesn't the Lineage guide link the firmware needed for the rollback?

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  • [–] [S] 1 point 2 years ago (1 child)

    It only states that the necessary firmware can be found on the manufacturers page

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  • [–] 3 points 2 years ago* (1 child)

    The steps to do soo are not hard tho.

    You just need the android 13 firmware this one: https://oxygenos.oneplus.net/8173_sign_LE2111_11_F_OTA_2290_all_nRBuNP_00011011.zip

    Then enable developers options by tapping "Build Number" 7 times

    Enable Usb debugging in the developers options.

    Then go to About device > Up to date, 3 dots on the top right and click local install.

    Then select downgrade firmware, Extract > Upgrade

    If the local install button is greyd out just follow the steps in this guide: https://droidwin.com/local-install-greyed-out-in-oneplus-how-to-fix/

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  • [–] [S] 2 points 2 years ago (1 child)

    The process itself is not hard no. I just could not find the firmware required.

    How and where did you find that link?

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  • [+] 1 point 2 years ago