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

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a02040217

New member
Mar 5, 2013
1
0
Managed to convert my 9pro from ColorOS to Oxygen OS,

nvbackupui no longer popup.

But Verification portion is still missing.

os.jpeg
 

Yugendhra

Member
May 27, 2021
13
1
OnePlus 6T
OnePlus 8 Pro
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
Oxygen OS for OnePlus 9
There is no option called installation package in color os settings how to switch to oxygen os please help
 

alfredbird

New member
Jun 19, 2021
2
0
My new phone received as LE2100, with Color OS. The current build is LE2110_11_A.08 after update.

I try to update to Oxygen OS. However, I cannot update to any downgrade package (regardless of AA, BA, or DA version). I received the same error message for each attempt:
Verification failed

I also tried to rename the package I downloaded to a shorter name based on one of the YouTube videos, but does not solve my issue, still shows 'Verification failed'.

Any suggestion from those who succeed already?
 

voyageio

Member
Dec 4, 2014
6
0
I downloaded the Downgrade Zip from Terabox and it worked !!!
(I tried to download the same file from Androfilehost but it failed in the middle).
 

zborn

Senior Member
Nov 16, 2009
699
401
OnePlus 9
I bought this phone with oos installed and I've received updated already. I'm currently on 11.2.8.8. I'm tempted to try color os for a few days. I even downloaded the downgrade file. Question: does Color Os have Google services installed?
 

hallyTran

New member
Apr 12, 2019
3
0
Hi
I am get an Oneplus 9 China item with DA rom,
but now i wanna run with below
OnePlus9Oxygen_22.E.08_OTA_0080_all_2105011330_downgrade_for_Android12_41193e4db5674a6d
can I run with local update it.

other hand, which different between each other ROM? AA / BA / DA
 

illusiveairforce

Senior Member
Hi
I am get an Oneplus 9 China item with DA rom,
but now i wanna run with below
OnePlus9Oxygen_22.E.08_OTA_0080_all_2105011330_downgrade_for_Android12_41193e4db5674a6d
can I run with local update it.

other hand, which different between each other ROM? AA / BA / DA
I think the DA version is the best. Which you should be on already
 
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deyunta1991

Member
Apr 23, 2011
13
0
30
Atlanta
OnePlus 8T
I have the USA version of the OnePlus 9 and I was trying to convert to the color OS downgrade zip and it's keep giving me the same issues I was wondering if anyone can help me maybe I need to downgrade with a normal zip and then use the color zip I don't know can someone please help me thanks 😊🙏🏾
 

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deyunta1991

Member
Apr 23, 2011
13
0
30
Atlanta
OnePlus 8T
I have the USA version of the OnePlus 9 and I was trying to convert to the color OS downgrade zip and it's keep giving me the same issues I was wondering if anyone can help me maybe I need to downgrade with a normal zip and then use the color zip I don't know can someone please help me thanks 😊🙏🏾
 

hallyTran

New member
Apr 12, 2019
3
0
I have the USA version of the OnePlus 9 and I was trying to convert to the color OS downgrade zip and it's keep giving me the same issues I was wondering if anyone can help me maybe I need to downgrade with a normal zip and then use the color zip I don't know can someone please help me thanks 😊🙏🏾
Im not sure USA version can be stock Color OS (China), so be careful
 

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  • 1
    Can you please reupload the Color OS Downgrade package for OnePlus 9 Pro to Google Drive or MEGA for me. I want to move from Oxygen OS to Color OS.

    I have tried for hours to download from the links you provided but I cant as I am not in China and it either requires Baidu, QQ or WeChat accounts with a Chinese mobile number.

    Thank you!
    I don’t have enough GDrive capacity, so I am uploading it to mega & androidfilehost. After uploading, the original message will be edited without notice.
    1
    Does the chinese variant will get the all bands of global variant after switch to oxygen os?
    1
    How can you tell whether you have Color OS or OxygenOS?View attachment 5303297
    Based on your build number, it stated that it is Oxygen OS indian version.
    1
    It's not a deal breaker for me since we can manually get 5G from the dialer. However, the functionality is there but it somehow needs an update from Oneplus to add 5G from the preferred network. I really hope Oneplus would fix these issues.
    im hoping for that too and with the release of oneplus 9 here in ph.. i hope the fix should be on its way soon..
    1
    I'm from the Philippines. Yes, I had the nvbackupui warning too. I'm just wondering if the India version can be converted to Global version. Seeing the other threads EU and NA are the Global versions?
    You can find FAQ in the download link channel, where there will be region switch methods.