How To Guide OnePlus 9 Pro: How to switch between Color OS and Oxygen OS without unlocking the bootloader

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Khalid Ghouri

Senior Member
Nov 1, 2015
94
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Faisalabad

Fiter8x

Member
Apr 10, 2021
9
1
OnePlus 9 Pro
Screenshot_20210421-224557.jpg

My OnePlus 9 Pro LE2120 (Chinese version) is successfully move from ColorOS 11 to OxygenOS 11 Indian region DA... 2G/3G/4G is working as well, IMEI back to normal but I didn't know about 5G because my country still not supported. Overall is Perfect 😁👌
 
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tubekeeper

Senior Member
Feb 28, 2011
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  • 2
    Finally !
    I did it.. but i dont have 5g anymore any ideas?
    OOS 11.2.3.3
    LE2120
    2
    Can anybody share a video tutorial.. It will be very helpful..i am really confused...
    2
    What about volte and 4g+ (carrier aggregation)?
    4g+ and volte work for me but no 5g
    1
    Hello, I'm having trouble applying the ColorOS downgrade on Oxygen 11.2.3.3.LE15BA. I get the "Installation package does not meet the necessary requirements". I've also tried to use the Full OTA in conjunction with resetprop, and it gives the same message. Any ideas?
    At present, this method is only applicable to the CN version of LE2120/LE2110. For other versions, I'm working on it
    1
    My oneplus 9 pro from chinais a and would like to hse Oxygen OS. I downloaded from the link and when I do a local install, I got a verification failed message. please advise....
    DOWNLOAD THE PACKAGE FROM THIS LINK
  • 4
    The China variant of the OnePlus 9 series comes with Color OS instead of Hydrogen OS by default, which is not good news for geeks as Color OS has many limitations compared to Hydrogen OS. Recently, OnePlus has officially provided a way to switch between Color OS and Oxygen OS.

    Please note that switching systems will clear all user data, so you better know what you're doing.

    · Switch from Color OS to Oxygen OS

    Download the downgrade package for the appropriate model and system and put it in the internal storage.

    Installation steps: Settings - Software update - Settings (top right corner) - Select installation package - Select the previously downloaded downgrade package - Install now - Install now

    If the Select installation package option is grayed out, it means that you now have a pending system update and you can choose to install or skip it.

    To skip update: Settings - App management - App list - Menu (top right corner) - Show system - Software update - Storage usage - Clear data - OK - Disconnect all network connections

    · Switching from Oxygen OS to Color OS
    Download the downgrade package for the appropriate model and system and put it in the root directory of the internal storage.

    Installation steps: Settings - System - System updates - Settings (top right corner) - Local upgrade - Select the previously downloaded downgrade package - CONFIRM

    Just reboot your device after the installation is complete and have fun!

    Downgrade packages:
    Color OS for OnePlus 9 Pro
    Oxygen OS for OnePlus 9 Pro
    2
    Can anybody share a video tutorial.. It will be very helpful..i am really confused...
    2
    Finally !
    I did it.. but i dont have 5g anymore any ideas?
    OOS 11.2.3.3
    LE2120
    2
    What about volte and 4g+ (carrier aggregation)?
    4g+ and volte work for me but no 5g
    1
    Can you get the colorOs update for the OnePlus 7T instead of the OS update?
    Not yet released
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