yashsingh1/xdaforums huggingface dataset:
[OnePlus 9 Pro] Khalid Ghouri:
first download the downgrade package and install it locally that is indian rom after that install on it 11.2.3.3EU version and enjoy the OxygenOS
[OnePlus 9 Pro] Khalid Ghouri:
Finally !
[OnePlus 9 Pro] Brownpigaro:
Hei guys newbee here. Will the downgrade have any impact on the phones imei number? Like will be different with the one on the box maybe?
[OnePlus 9 Pro] Khalid Ghouri:
This method is only applicable to the CN version of LE2120 / LE2110

nothing wrong with these two models
[OnePlus 9 Pro] Brownpigaro:
So the downgrade from color to oxygen os wont impact the IMEI version/number? Need to cross check since my country has this strict regulation related imei. If the Imei change after i flashed it I'm affraid I wont be able to use the phone since the registered Imei to get the network would be the one on the box (before changing to oxygen os).
[OnePlus 9 Pro] Alexey_KF:
Hello everyone! I'm a newbie. What is the difference between firmware IN, EU, GL?
[OnePlus 9 Pro] bbrg484:
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....
[OnePlus 9 Pro] Khalid Ghouri:
DOWNLOAD THE PACKAGE FROM THIS LINK

Private files shared via TeraBox

Please enter the password to extract the file: TeraBox offers up to 1024GB of free cloud storage. Download the app for secure storage and file sharing anytime, anywhere.

www.dubox.com
[OnePlus 9 Pro] Fiter8x:
What is the password? I try to download from that link but password required.
[OnePlus 9 Pro] ENAUEN:
I would like to try to download it from here although it says a password is required. Can you please advise
[OnePlus 9 Pro] ENAUEN:
Password is e222

I found it on https://www.gizmoweek.com/how-to-switch-install-oneplus-9-pro-coloros-to-oxygenos/
[OnePlus 9 Pro] Fiter8x:
Hello, is it safe to try? I m afraid if my IMEI is broken 😔
[OnePlus 9 Pro] takumiwan:
Gizmoweek comment ： problem IMEI does not display, will be resolved in the next OTA upgrade. https://www.gizmoweek.com/how-to-switch-install-oneplus-9-pro-coloros-to-oxygenos/
[OnePlus 9 Pro] Icey_3:
My OP is le2120

I downloaded the downgrade but installation always fails at 60% any help?

Switching from color to oxygen
[OnePlus 9 Pro] Icey_3:
Fixed thank you
[OnePlus 9 Pro] andixxx81:
Sir..how to do it without imei lost and get network? I have LE2120 also 9 pro colorOS
[OnePlus 9 Pro] Fiter8x:
So its okay we move to OxygenOS now? but the IMEI still broken. As the article mention will be resolved in the next OTA upgrade.
[OnePlus 9 Pro] andixxx81:
After install downgrade indian version and install EU version again,it will get imei back to normal?
[OnePlus 9 Pro] Icey_3:
I did it.. but i dont have 5g anymore any ideas?

OOS 11.2.3.3

LE2120
[OnePlus 9 Pro] dcrd:
I did this and my IMEI changed, plus I can't use 5G anymore. Any ideas?
[OnePlus 9 Pro] Brownpigaro:
Does downgrading to ox os impacting your imei code?(become different with the one on the box)?
[OnePlus 9 Pro] djjafi:
Actually not impacting, just displaying wrong in Oxygen and will be fixed with next OTA.
[OnePlus 9 Pro] Icey_3:
Yes its different and i dont have 5g anymore
[OnePlus 9 Pro] Icey_3:
I have the same problem report it to oneplus too so they will be aware of it like i did
[OnePlus 9 Pro] Khalid Ghouri:
have you shown 5g option in prefferd network type ?
[OnePlus 9 Pro] Icey_3:
It was there when it was color os not i. Oxygen only (4g/3g/2g) and no smart 5g tab or anything related to 5g
[OnePlus 9 Pro] Khalid Ghouri:
i have this option but 5g not available in my contry try this MSM Tool : https://sourceforge.net/projects/djsubterrain/files/OnePlus 9 Pro/OP9P_MSM_Tool.zip/download

when you install on your phone your phone convert to globall oxygenos and i am sure your problem should be solved
[OnePlus 9 Pro] tickeyding:
It has been fixed with OTA 11.2.4.4
[OnePlus 9 Pro] takumiwan:
New oxygen os OTA update Fixed display bug of IMEI https://www.gizmoweek.com/oneplus-oxygen-os-ota-update-pushed-fixed-display-bug-of-imei/
[OnePlus 9 Pro] pranavasri:
Any update on this? or any work around ?

I have the Indian Oneplus 9 pro.
[OnePlus 9 Pro] Hank87:
Can you confirm that after the update 5g, volte, carrier aggregation (4g+), is working in Europe on LE2120 and oxygen os?
[OnePlus 9 Pro] Jaodidyouknow:
IMEI fixed but 5g still not available on 11.2.4.4.LE15BA
[OnePlus 9 Pro] Fiter8x:
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 😁👌
[OnePlus 9 Pro] Icey_3:
Same for me still no 5g
[OnePlus 9 Pro] tubekeeper:
OnePlus Oxygen OS OTA Update pushed Fixed display bug of IMEI - GizmoWeek

OnePlus Oxygen OS team version 11.2.4.4.LE25DA OTA update has been pushed, update includes fixed display bug of IMEI.

www.gizmoweek.com

Fixed IMEI OTA released
[OnePlus 9 Pro] Hank87:
What about volte and 4g+ (carrier aggregation)?
[OnePlus 9 Pro] Icey_3:
4g+ and volte work for me but no 5g
[OnePlus 9 Pro] Stanley7777:
Is this method still working? Im in Color OS software version L05..wanna change to OOS. File downloaded but it seem cant continue to update . The file will half way stop at 33% so could not continue to donwload. Any work around on this?
[OnePlus 9 Pro] ARLT:
sorry for asking but what's the difference between this package and from the official website one ? because i got the same problem with 'Verification Failed' too
[OnePlus 9 Pro] 24kmold:
EDIT: I made the mistake of downloading the full package linked in the OTA Telegram. This lead to "Verification failed". Using the "downgrade package" instead solved the problem.

Thank you so much for making these explanations!
[OnePlus 9 Pro] aahmedabir24:
Can anybody share a video tutorial.. It will be very helpful..i am really confused...
[OnePlus 9 Pro] GinoTonny:
Same 😟
[OnePlus 9 Pro] GinoTonny:
I got bored of waiting so long. Bye
[OnePlus 9 Pro] anasmhds:
Downgraded my Chinese OnePlus 9pro from coloros to oxygen, everything is perfect including ota, but lost 5G 😪 provider Etisalat UAE.

Do you think OnePlus is working on a solution?
[OnePlus 9 Pro] MarukuV:
There's supposed to be something on the verification on the about phone page right? Same unit with mine. Gets this annoying nvbackup error plus that missing verification menu
[OnePlus 9 Pro] mertkan:
Did you able to sort out the Verification topic? My device is also showing nothing in the verification field
[OnePlus 9 Pro] MarukuV:
Not yet.. i think OnePlus will not be going to fix it. Even the manual toggle 5g.. im trying to send my phone back. And my seller is refusing to take it back.
[OnePlus 9 Pro] KTFA:
After install downgrade file from here to color OS .. go to "About phone" i got "Snapdragon 855" ?

My Oneplus 9 pro with SD-888?
[OnePlus 9 Pro] KTFA:
Anyone have MSM tool for Color OS
[OnePlus 9 Pro] Atul Menon:
yes thats a bug
[OnePlus 9 Pro] mertkan:
Sorry to hear that

Sorry to hear that, I hope the seller will take back the device. One last thing , is your device shown as play store certified now? Can you install and open Netflix from the Google play store?
[OnePlus 9 Pro] MarukuV:
Netflix works fine. Phone works normally. Only certification issues are really missing in the about phone section. Plus 5g is manually toggled and I'm not happy with that of ever 5g will come to my area. Seller unfortunately won't take back the device. He said he will help me sell it for me . I really don't know if anything will come out good from this 😔😔
[OnePlus 9 Pro] amanqour:
any idea how switch from oxygen 11.2.5.5 to color os?

because current downgrade file does support
[OnePlus 9 Pro] Damirie:
my phone can't success with this step,
[OnePlus 9 Pro] Noexcusses:
I downloaded Rom and when I try to install it says that I can't install earlier Rom for better usage of phone and avoiding bugs.

What I'm doing wrong guys?
[OnePlus 9 Pro] arslaankhan:
I switched from oxygen is to color is via downgrade package while running android 12 in Indian variant of OnePlus 9 pro... Everything seems to be working fine.. Everything was perfect.. As soon as I installed I received OTA. The only issue after switching was the mobile network .!! I was not receiving mobile network in any of my sim.! And also was unable to search network . Wi-Fi connection seems to be working fine. Mobile network was the only issue. Do anyone know how to fix mobile network in LE2121 running color os. Via ADB or Fastboot.!! Plzz let me know. Others will also get help too. And surely I will provide how to switch to color os from oxygen os in OnePlus 9 Pro Indian Variant (LE2121)...

Thanks....!!!
[OnePlus 9 Pro] anasmhds:
You should not switch directly from oxygen android 12 into color os 11.

You should have made a downgrade same oxygen from android 12 to 11, then make the switch.

My advise now is: switch to oxygen 11 and check if mobile network is working or no .

If no, flash android 12 and it should work, then downgrade same oxygen from android 12 to 11, before making any switch.
[OnePlus 9 Pro] arslaankhan:
While using oxygen os 11.. Whenever I try to switch to color os

I appreciate your reply.. But I am using Indian variant. While on oxygen os 11.. Whenever I try to switch to color os the following error occurs .. Same is attached in screenshot ...!!! Why I am unable to switch to color os while on stable oxygen os 11 but can switch to color os while on Android 12 developer preview 1... ?? And after switching I am unable to receive signals...!!!
[OnePlus 9 Pro] anasmhds:
Strange, I just switched smoothly
[OnePlus 9 Pro] arslaankhan:
did you got your sim working . because using sd888 and showing sd855 is not a bug issue . the main issue is the sim is not working ..!!
[OnePlus 9 Pro] benhidalgo:
I'm gonna keep my LE2120 on Color OS for now. Wait for root and such. So far launchers and all the modded apps are stabled. Having 0 issues on Color OS looks more sleek than Oxygen OS in my opinion. Thanks for the 🦮 guide!
[OnePlus 9 Pro] KTFA:
Yes it's working
[OnePlus 9 Pro] Nav Deep:
Can we switch from OxygenOS to ColorOS on OnePlus 9 Pro indian variant?
[OnePlus 9 Pro] anasmhds:
Yes and tested for model LE2120
[OnePlus 9 Pro] Nav Deep:
LE2120 is chinese variant whereas LE2121 is indian variant

Just want to know if anyone has flashed color os on LE2121
[OnePlus 9 Pro] car king:
im LE2125 us model from oneplus Any chance we can get the ColorOS. I'm surprised not many people want to try the color os
[OnePlus 9 Pro] Erkan6779:
Nasıl yaparız peki benim cihazda oneplus 9 pro eu colorosa geçmiyorum
[OnePlus 9 Pro] benhidalgo:
You can switch any 1+ phones to Color OS. My friend from India did. He told me he used a VPN to get the full features on his 8T with Color OS. I don't know what gets blocked off from China but a VPN can solve that.

This is my favorite settings from Color OS:

I use Nova and Crispy per theming.

😉👍
[OnePlus 9 Pro] arslaankhan:
you can switch to color os .. in 8t easily with msm tool with working network.. but if you switch oneplus 9 pro oxygen os to color os . you will not get network coverage..!!! I installed color os in my indian variant.. i was able to use all features including ota . but not the networks...!!
[OnePlus 9 Pro] arslaankhan:
you can easily switch to color os in indian variant of oneplus 9 pro . everything will be working fine with color os .. but you will not get network of any either of your network..!!! Just in case if you are eager to switch to color os without simcard network . Here is a procedure ..

First install android 12 developer preview 1 in your oneplus 9 pro.

Install system update apk . You can get the link i the forum of android 12 ..

Then download the downgrade package of color os.

Open system update app and tap the gear icon.

Select local update and select the color os downgrade package..!!.

Wait until it installs and reboot..

Uhhuh ...you are now using color os in your oneplus 9 pro ..!! But will no sim network 👍😜
[OnePlus 9 Pro] arslaankhan:
Is there anyone who found the solution of no sim card network error while switching to color os in indian variant of oneplus 9/9 pro ..!!! Any help will be appreciated...!!👍
[OnePlus 9 Pro] Nav Deep:
Good to know that I can switch but I will wait for the network issue to get fixed.

Let me know whenever you find a solution .
[OnePlus 9 Pro] arslaankhan:
I want to ask a question . After reading the replies in this thread many of you can confirm that while switching to color os from oxygen os in indian variant of oneplus 9 pro we lose the sim card network . But my question is , can I flash my backedup modem.img of oxygen os (DA) to color os to get sim card network . Its just a question . If anyone knows about this , please let me know . Can I get access to my network by flashing modem.img ..
[OnePlus 9 Pro] arslaankhan:
If anyone knows anything about the question , please reply . As any reply will be appreciated . Thanks a lot.....
[OnePlus 9 Pro] Erkan6779:
Varmı bir gelişme LE2123 coloros için teşekkürler
[OnePlus 9 Pro] Huigie:
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[OnePlus 9 Pro] schwarzerfleck:
Hey, I see a lot of confusion about IMEI and stuff.

I am currently running Oxygen 11 on my EU 9 Pro: LE2123

Want to switch to ColorOS. Will I be able to do that with no issues? I honestly cannot make much sense out of the mix of messages and versions... Thank
[OnePlus 9 Pro] benhidalgo:
None. I switched to OOS and back to COS with no issues. Follow the OP it's easy. COS is my favorite so far. But they're both great.
[OnePlus 9 Pro] schwarzerfleck:
Thank you very much. I just switched to COS on my 8T without any issues, more than a month ago, but 9 Pro was not as straight forward from the Q&A.

ColorOS is far superior in my eyes, from both subjective AND objective standpoints. Good that I can switch to it on my main device.
[OnePlus 9 Pro] benhidalgo:
Which build number do you have? I have the 120. I think the T-Mobile is the only one with a drawback. Like Dr Strange said: "It's a Simple Spell But Quite Unbreakable."
[OnePlus 9 Pro] car king:
anyone got US model.to flash color OS yet
[OnePlus 9 Pro] KolleDerBoss:
Hello. I have an EU OP9 Pro and wanted to switch to Color OS. The downgrade worked, but I can't install the Color OS file. Has anyone here already done this with an EU OnePlus or is it generally not possible to change the OS?
[OnePlus 9 Pro] schwarzerfleck:
Here is a lengthy way to get this working on a EU 9 Pro with WORKING SIM card. I just completed my first phone call! Only do this if you know what you are doing and if you are familiar with the concepts of flashing ROMs, using fastboot to flash partitions and possibly using the MSM tool to restore your device in case something goes wrong. I told you.

Steps to switch from OOS>COS on non-chinese OnePlus 9 Pro. Credits to: Telegram user SamuraiTronVC

Note: This whole process will wipe your data.

1. Install Android A12 Beta 1 by OnePlus via Local Upgrade.

2. Once booted into A12 Beta, install the custom Local Update APK that they provide.

3. Install the ColorOS Dowgrade package and reboot.

__________

Here is how to fix the missing network on 9 Pro. I tested it with my own LE2123 EU 9 Pro, but since the A12 DP is working on IN and NA versions as well, should work for everyone. I updated to the latest ColorOS build after step 3, A.08. Don't know if that is required, but do it anyways. The phone has been behaving a bit weird after doing this - e.g. boot loops once, but then it works etc. Not sure if it has to do with steps 4-6, but proceed with caution. Credits to: Myself.

__________

4. Extract the modem.img from the A12 DP using Payload Dumper. I did it already and you can download it here, but feel free to extract the .img yourself.

5. Unlock your bootloader: fastboot oem unlock

6. Flash the modem.img: fastboot flash modem modem.img
[OnePlus 9 Pro] Erkan6779:
LE2123 coloros sayesinde herhangi bir gelişme var mı?
[OnePlus 9 Pro] benhidalgo:
Is Android 12 Beta still having these issues?

Known Issues

– All data will be cleared while flashing the build

– Video call function is not available

– Fingerprint unlock and face unlock are unavailable

– Certain UI screens look less than desirable

– Some apps may not function as expected

– System stability issues

– Probability of camera crash when HDR mode enabled.
[OnePlus 9 Pro] DevilSoulll:
Guys. I will get my Oneplus 9 pro soon "Chinese version with Global ROM installed" from Aliexpress.

I'm not sure if it will come missing any features or services or not. I'm ok with the Global or the EU versions.

I just need to know if I wanted to flash to EU version, will there be any issues like 5g missing or something. And will the op way of local flashing work just fine?
[OnePlus 9 Pro] schwarzerfleck:
Android 12 Developer Preview hasn't evolved into anything different yet, no. So it still has the bugs that you have listed.

But it's only a step in-between, in order to flash the proper A11 build of ColorOS.
[OnePlus 9 Pro] Shahan Siddiqui:
Hello I want to shift from oxygen to color os I have 9 pro LE2120 will I receive OTA on color os and please guide if I can switch back to oxygen easily
[OnePlus 9 Pro] Shahan Siddiqui:
And let me know if I'll get Google apps and playstore etc in Color os
[OnePlus 9 Pro] Nav Deep:
Is network working now in indian variant (LE2121) after switching to ColorOS without unlocking bootloader?
[OnePlus 9 Pro] Nav Deep:
Network fix without unlocking bootloader? @car king
[OnePlus 9 Pro] Noexcusses:
is there any chanse to roalback on 11.2.5.5?
[OnePlus 9 Pro] car king:
here is my test result .

1. update to the Android 12 then roll back to color os.

2.flash the provided link for Modem ..work ok with4G but no 5G im in the US with the USA model so maybe i need to flash my own modem to work ...

3. Flash the tmobile Modem found on XDA and messup my phone bricked it !! but msm save me .

after flashing the Tmo modem im keep getting Qualcomm dump Crush screen, ....

i get that screen when I first time flashes schwarzerfleck's modem . but after reboot it is fine...

also what I notice is every OTA update will kill the modem u will need to reflash the modem to get

data/call working ...

if anyone would like to chat about this please pm ur telegram we can share our experience.
[OnePlus 9 Pro] schwarzerfleck:
Weird, 5G worked for me in the Netherlands. Might have something to do with the bands supported in the early A12 builds?
[OnePlus 9 Pro] RazOne:
So let me get it straight. If I'm on European variant le2123 I simply flash the color os downgrade and voila ? And if I wanna go back to oxygen I flash oxygen downgrade package ? Thanks
[OnePlus 9 Pro] adicken:
I'm confused too. I have a UK LE2123 and want to go to Color OS. I tried the steps on the first post but it said it wasnt possible. Is there any other way (useing MSM download tool or something)?
[OnePlus 9 Pro] atoyu:
Hello, im confused

i will receive china version color os to oxgen os which one should i download?

OnePlus 9 Pro Color OS 11.2.A.03 (full or downgrade)?

OnePlus 9 Pro Oxygen OS 11.2.2.2.LE15DA (full or downgrade)?

edit: i think i need to download this one for my phone OnePlus9ProOxygen_22.I.05_OTA_0050_all_2103242250_downgrade_for_ColorOS_8b205ea5316a4923.zip

thank you!!
[OnePlus 9 Pro] null0seven:
Anyone from Europa use Color OS?

If yes how are the updates? They come? Or you have to do it manually?

Color OS have Oxigen option "Rise to answer a call" in Settings > gestures > Quick gestures ?
[OnePlus 9 Pro] adicken:
Don't think you can get color is on the EU version. Not that I can find anyway.
[OnePlus 9 Pro] benhidalgo:
ColorOS, no need for customs ;)
[OnePlus 9 Pro] ashokmor007:
flashing modem doesnt work on 9
[OnePlus 9 Pro] schjor:
Does Color OS have google apps?
[OnePlus 9 Pro] benhidalgo:
None
[OnePlus 9 Pro] schjor:
Sorry to bother you, but is there a way to install one on Color OS?
[OnePlus 9 Pro] benhidalgo:
yes, are you in China?
[OnePlus 9 Pro] schjor:
No, I'm in Europe, and i would like to try Color OS, but without gapps is useless to me...i have le2120 (china model) with oxygen os and want to be sure if i can get working google apps and services before i install color os
[OnePlus 9 Pro] benhidalgo:
OK, excellent 👍. After you flash Color OS, head on over to apkmirror and download the play store or any apks of your choice. Color OS has google play services baked. Also get the Gboard, Color OS keyboard is completely for Chinese users.
[OnePlus 9 Pro] ramoneluis:
ist possible to get it in German linguage?

Thanks
[OnePlus 9 Pro] Nirvana Rules:
Is there a way to flash this to global version le2125?
[OnePlus 9 Pro] Rachiley:
please try to update color 12 beta,it can fix sim card issue.it works for me.
[OnePlus 9 Pro] Rachiley:
try color 12 beta.it works.there is no need to unlock flash modem.img
[OnePlus 9 Pro] shawnydee:
Is colorsos 12 stable ? How do i install it i have the LE2120 variant
[OnePlus 9 Pro] Nirvana Rules:
Ok I managed to flash Color OS beta I even was able to apply update. The only thing that I don't like so far is that when I use Google messages it request permission to send... With every single message. Is there a way to fix this?

I'm using my le2125
[OnePlus 9 Pro] sefai77:
Hi, i cant update this coloros files : it says the installation package does not meet the requested requirements ??
[OnePlus 9 Pro] Ketelbinie971:
Same here. I'm on oxygen OS open beta LE2123
[OnePlus 9 Pro] rackis18:
I'm running ColorOS official last update on LE2123 everything works signal etc bootloader locked
[OnePlus 9 Pro] Fatal_Scythe:
Hi, can you tell me how you did that?

I've been trying for a while, but couldn't get it to work.

Thanks in advance ^^
[OnePlus 9 Pro] Fatal_Scythe:
Hi, I'm kinda stuck at the 1. Step already, System-Update just says "Update Installation failed." when trying to install the A12 Beta.

Is there any specific OOS Version I have to be on? I tried on 11.2.8.8 and 11.2.9.9 but both times it fails with the error above.

Thanks in advance. ^^
[OnePlus 9 Pro] peking_man:
Planning to buy a OnePlus 9Pro here in China - apologies for what is probably a dumb question, but to convert from ColorOS to OxygenOS is it still necessary use the downgrade ROM process? Or if there is a newer Oxygen version compared to the one the phone comes with, can I just use a direct local upgrade process?

I understand that when the OnePlus 9/Pro was first released the downgrade route was necessary, just not sure if that is stlll the case. I last did this 4 years ago with a OnePLus5 - and it seems some things have changed since then ...!
[OnePlus 9 Pro] brmbjn:
I am on oxygen c.39

Can i flash color c.39 ? Without data lose ?
[OnePlus 9 Pro] prembhullar:
Can anyone please help VoLTE don't work for me..when I first bought this device model was le2125 and I went to color is and now even model has been changed and VoLTE don't work.
[OnePlus 9 Pro] Annki81:
Friends, I need help by !

I have an OP9 Pro (V.CN / global rom / ColorOS V11.2 / Android 11), which package should I download to use Portuguese apps and language in Brazil?

Downgrade packages:

Color OS for OnePlus 9 Pro

Oxygen OS for OnePlus 9 Pro
[OnePlus 9 Pro] Creazybull:
Tried to do the same way as instructed but still facing verification fail problem. Device is Chinese version of OnePlus 9 Pro with color os!
[OnePlus 9 Pro] elchmartin:
Very interested in the answer to this, too.

Getting my 9pro in 2 days (if everything goes well).

But I am also willing to try anyway.... Will keep you posted ;-)