yashsingh1/xdaforums huggingface dataset:
[OnePlus 9RT] penguinus:
Call recording prohibited by laws in many countries now, google blocked it in their apps, but not only in apps. There are restrictions on system level too. China firmwares usually remove that restrictions. It is why recording works 8n ColorOS, but not in OxygenOS. Even if you install OnePlus dialer to oxy, it will not record.

Many third party apps try to get around restrictions to implement recording back. But results are not consistent for different devices and even firmware versions. As of now Skvalex call recorder works ok for me even with latest OxygenOS. https://xdaforums.com/t/android-4-0...cord-phone-calls-from-the-phone-line.1441643/
[OnePlus 9RT] Barabaz:
Can anyone help? my laptop did an update before and it messed up my adb driver.. I'm trying to install it back with no luck.. I'm also trying to revert back to colorOS
[OnePlus 9RT] airdmo:
Hello,

If I want to flash 9RT back to the ColorOS China ver.

What should I do? Thankyou.
[OnePlus 9RT] g96818:
hack the login on the msm tool
[OnePlus 9RT] DjBastard:
Good morning

Could you tell me the adb command to lock the bootloader again?

and thus receive future updates?

will doing this process erase everything again?

thank you

a greeting
[OnePlus 9RT] g96818:
fastboot flashing lock

what version did you install?
[OnePlus 9RT] DjBastard:
Install A.07 👍

Thanks

Good job!!!! 🤩
[OnePlus 9RT] onizuka.csgo:
Oxygen 11.8 released.

Wait for zip
[OnePlus 9RT] EduFaol:
A.08 updating via OTA
[OnePlus 9RT] onizuka.csgo:
I neetd root, wait for zip to extract boot.img
[OnePlus 9RT] EduFaol:
don't delay to post
[OnePlus 9RT] g96818:
don't demand
[OnePlus 9RT] onizuka.csgo:
Can u unlock

OxygenOS 11.A.08 folder​
[OnePlus 9RT] g96818:
Not today. Someone demanded the file so everyone needs to wait.
[OnePlus 9RT] penguinus:
boot.img for A08 (zipped)
[OnePlus 9RT] g96818:
you shouldn't reward people who make demands
[OnePlus 9RT] penguinus:
I don't educate people, I just share
[OnePlus 9RT] g96818:
alright smart guy. you're resposible to help people update from now on. you better share as soon as you update.
[OnePlus 9RT] onizuka.csgo:
Don't share? What is this community established for? you are too selfish with your knowledge. If you don't share, it's best not to say anything. keep and use. don't make it look like a favor
[OnePlus 9RT] g96818:
Selfish? It's people like you making demands and expecting people to serve you who causes delays.
[OnePlus 9RT] onizuka.csgo:
just a request. doesn't mean you have to deal with it right away. I don't understand why I'm delaying you. It's just whether you want to share or not.

Fk reason
[OnePlus 9RT] Valdem:
FYI. Updated OP with latest version A.08.
[OnePlus 9RT] Valdem:
There is the same way. Just use set of files for chinise device.

You can use next link to download package created and tested by @penguinus.

Steps are exactly the same as in OP.
[OnePlus 9RT] airdmo:
thankyou!
[OnePlus 9RT] onizuka.csgo:
Does anyone have an error that can't send images on telegram?

Both a07 & a08
[OnePlus 9RT] penguinus:
Yes. It appears frequently on Android 11 and 12. Both saving images and attaching them to posts. It is like known issue of Telegram, there is a bug, but not fixed yet. You mean in versions before A07 it worked correctly?
[OnePlus 9RT] onizuka.csgo:
No. I also don't know if it's a bug of tele or oneplus. I come from xiaomi. telegram and nekogram normal use on xiaomi devices
[OnePlus 9RT] penguinus:
Most of telegram clients based on the official client code and have the same bugs. The only client I know on it's own codebase is Telegram X. It doesn't have issues with images. Also, issue appears not in all firmwares. I.e. in ColorOS for 9RT telegram works correctly. Don't know what it depends on.
[OnePlus 9RT] shawn4sp:
System OTA updated to A.08 from A.05 successfully just now.

Previously, OTA update would fail.

Is this something new? Still has unlocked bootloader.

Strange.
[OnePlus 9RT] EduFaol:
I believe that since A04 with locked bootloader it can update via OTA.
[OnePlus 9RT] penguinus:
Found what causes an issue. It happens because of old fastboot version in firmware package, it does wipe before flashing incorrectly in some way.

In order to fix it, you should do wipe/factory reset in system settings or in recovery. Please note all data will be erased. Don't forget to do backup and restore it after wipe!
[OnePlus 9RT] Cathair2906:
i still got no clue on this, i tried A.05 and A.07, both cannot install OTA...
[OnePlus 9RT] Cathair2906:
i used the logcat and found the reason why OTA fail
[OnePlus 9RT] Valdem:
OxygenOS OTA for this device is incremental and each of them can be installed only over the proper previous version. Most probably that you try to install incorect incremental OTA (doens't match required previous version).

I can do this assumption by you logcat messages (installer do check of correctness of current version because it use it for diff patch to new version). It reports about wrong checksum for one of partition. But there shoudn't be any issues if you use full installer from the OP and do OTA upgrade over it.
[OnePlus 9RT] Valdem:
FYI. Original post was updated with new version of A.08 firmware. @penguinus find the solution for issues with some application (telegram, gmail) which works with device filesystem. Issue is related to specific version of `platform-tools`, which used to flash device. Tools do device cleanup incorrectly. New version include fix for this issue.

Issue can be fixed without full flashing of this firmware. Just by factory reset of device from the menu.

!!!DO BACKUP!!! of you data before this operation. Do not use TWRP for this operation because TWRP storing dump of `userdata` partition and restoring it after factory reset most probably return the original issue.
[OnePlus 9RT] Cathair2906:
But the OTA files were downloaded by itself automatically, so is it OTA server issue? And will it be fix after install full installer in the future?
[OnePlus 9RT] Valdem:
From your logcat messages, it is obvious that checksum on a 'dsp' partition is not corresponds to an expected value. This means that this partition was modified (TBH I do not understand "why" and "who" did this). You will not be able to flash any OTA update till you have modified system's partitions on the device.

If your device is rooted, you will need to uninstall magisk before install OTA and re-install it after flashing OTA.

In your case you can restore system's partition by flashing the firmware from the original post. There is latest stable version A.08 available. It is possible to flash the firmware without wiping user data (using 'upgrade.bat' script).
[OnePlus 9RT] shawn4sp:
Got it. That explained why OTA update failed from A03, and succeeded from A05. (I manually updated from A03 to A05)
[OnePlus 9RT] Cathair2906:
Actually i did flash the firmware from this post, and never rooted it...

I also able to relocked the bootloader, however OTA still failed.
[OnePlus 9RT] Valdem:
Situation is really weird. Could you tell which current version of OxygenOS on your device now. And, if you remember, which version of ColorOS was on device before flashing OxygenOS.

Looks like integrity of this partition is not checked by the bootloader (it is why you was able to lock bootloader). However I don't know what is really happened with your `dsp` partition. Most probably it was not correctly flashed when you convert your device to OxygenOS.

If bootloader on your device is locked now - there is no way to fix this issue without wiping user data on device. Otherwise you can flash latest version firmware from the original post. To be sure that you doesn't have the same issue I would recommend to flash an A.07 version and do OTA upgrade to A.08 version. After successful upgrade to A.08 you can relock the bootloader.
[OnePlus 9RT] Cathair2906:
No worries, i can wipe the userdata and flash the latest A.08 once again.

I have forgotten which colorOS it was, but the first time i flashed was A.07 version, but cannot OTA
[OnePlus 9RT] Cathair2906:
interesting, after i unlocked and flashed the latest A.08 then flash A.07 once again, the OTA work successfully.....
[OnePlus 9RT] onizuka.csgo:
Problem: QUALCOMM CrashDump Mode: dm-verity device corrupted verity_ctr

I found a way to fix it

I realize that many people will encounter this error when Windows cannot automatically update drivers

2 drivers are required to install oxygen os

1. Oneplus driver in fastboot mode

2. Qualcomm driver in fastbootD mode

you can search google how to install
[OnePlus 9RT] trx888:
Guys can you please clarify if 5G and VoLTE work after flashing this ROM?
[OnePlus 9RT] miky03:
In Germany with O2 it worked
[OnePlus 9RT] Cathair2906:
Did anyone face the 50MP camera issue?
[OnePlus 9RT] shawn4sp:
In the USA, T-mobile and Verizon no.

Verizon can't even make calls

AT&T blacklisted.
[OnePlus 9RT] zahe_ershk_72:
Sir can you provide the g drive ling plzzz mega drive is not working properly .
[OnePlus 9RT] AdroitAdorKhan:
Did you manage to fix this issue?
[OnePlus 9RT] Cathair2906:
nope, just reported to Oneplus officially, do you have the same issue as well?
[OnePlus 9RT] phtis:
I had the same issue. the rainbow colour display not only occurs on the 50MP camera mode but also while QR scanning.

The weird thing which I tried was to restart the phone, which then reverted my smallest width setting in Developer Options which is probably another bug. After I changed the smallest width setting back again (to 490dp), the problem went away.

Right now, 50MP camera mode is working properly and the QR code scanning on various apps is fine. however, the issue does appear intermittently again, but going across different apps, and toggling the 50MP mode on and off a few times seems to help with the issue.

I'm not sure if this method can fix your issues, but worth a try. at least till the bug is fixed.
[OnePlus 9RT] loleepop:
I have this exact same issue and doing what you said didn't change anything - still need to go through the camera on/off dance to get it working (for one time).

Waiting for further info on this...
[OnePlus 9RT] Cathair2906:
I will try to change the smallest width as you said.

Btw, are you also converting it from COS to OOS?
[OnePlus 9RT] phtis:
I bought a MT2110 but it was pre-installed with a "Lahaina with arm64" rom. I then updated via OTA to MT2111 A.08, I didn't have to do the installation as mentioned in this thread.

Smallest width doesn't really work, it was just something that I experienced and shared. Because right after I restarted, it messed up my smallest width setting, and when I set it back again, the QR code scanner seemed to work. However, that was short-lived.

The main temp fix seems to be going back into the camera and toggling 50MP mode on and off.
[OnePlus 9RT] anbell:
After flashing, the display model is MT2111, and the 120Hz high refresh rate of the King of Glory cannot be turned on. Do you want to change the default model to MT2110?

刷完后显示型号为MT2111，无法开启王者荣耀的120Hz的高刷，是否更改默认的型号为MT2110
[OnePlus 9RT] Cathair2906:
It seems A10 has fixed the issue now
[OnePlus 9RT] jordenng:
Thanks for the method! I was successfully migrated my MT2110 from color OS to Oxygen OS, After that I upgraded to Android 12 Beta and downgraded back to 11 with Oneplus forums packages. Currently version is A10 and I have downloaded appllications on it. So my question is can I relock bootloader for MT2110 device which using Oxygen os?
[OnePlus 9RT] Active-Hawk:
Thanks so much for this release! I'm curious about one thing though. I'm a novice user and I'm concerned about security. Does the fact I can lock the bootloader mean that this release only contains completely unmodified data from OnePlus?
[OnePlus 9RT] loleepop:
Can anyone upload the A.10 image? I'm on A.08 and can't detect any new updates. Thanks in advance!
[OnePlus 9RT] DimaX111:
Hi, the apk of System update can't find the open beta 1 .jar file for some reason. It feels similar to your issue.

I bought MT2110 from china but received it with the A08 "Oxygen OS Android 11.3" and for some reason, it writes "MT2111" in the settings.

Is this Oxygen OS or ColorOS?

Can I update to the open beta of Android 12?
[OnePlus 9RT] DimaX111:
it turns out I needed to delete the .jar file suffix. :| now works.

Issues still exist on my phone also after from update:

1. I don't have 5g at all

2. People can't call me (the phone seems to them OFF)

3. When I call people it takes like 10 seconds to start calling (hearing any beeps)

4. Notifications often get not sent - many times I don't see any notification in apps but when I enter, I see stuff that should've gotten to me (i.e., the Taxi driver is near)
[OnePlus 9RT] ThingVn:
If you want to update OTA, you have to relock the bootloader. All data will be lost!
[OnePlus 9RT] g96818:
A.08 - A.10 OTA

A.10 - A.11 OTA

update in order

you should demand penguinus to upload it and blame onizuka.csgo for why no one has uploaded it.

no you don't
[OnePlus 9RT] DimaX111:
What does AXX and CXX mean in the ROM version numbers?
[OnePlus 9RT] loleepop:
Thanks for the files, but being a noob I've no idea how to use them :(
[OnePlus 9RT] g96818:
OPLocalUpdate_For_Android12_13.apk | by Xi Jing Pooh for /e/OS supported models

Download GApps, Roms, Kernels, Themes, Firmware, and more. Free file hosting for all Android developers.

androidfilehost.com
[OnePlus 9RT] Active-Hawk:
@Valdem do you know where the mdtp.img and mdtpsecapp.img files are sourced from?
[OnePlus 9RT] Valdem:
they are extracted from MT2111 (Indian) device.
[OnePlus 9RT] Valdem:
This ROM is based on files retrieved from OTA. The only files which doesn't come in OTA is what you mention in your last question (`mdtp.img` and `mdtpsecapp.img`). They was extracted from original MT2111 device. That is why bootloader can be locked and new OTA can be applied.
[OnePlus 9RT] loleepop:
Thanks again! I managed to get the local update going but it seems like the installation will always fail at 37%. I also tried to update via the built-in system update app and saw the same problem (installation problem at 1/3 progress). Hoping somebody can provide or fix or I'd have to go back to ColorOS...
[OnePlus 9RT] Valdem:
Your problem related to modified firmware on your device. OxygenOS use incremental scheme of update and it requires original content of all partitions on device. If at least some of the partition was modified - it will fail upgrade.

In relation to this answer the next question for next recommendation:

1. Is your bootloader unlocked?

2. Do you have Magisk installed?
[OnePlus 9RT] loleepop:
1. Yes.

2. No - to my knowledge.

Thx!
[OnePlus 9RT] Valdem:
if you are still on A.08 version you can try to flash fastboot version of A.08 firmware from the original post. But just use upgrade.bat instead of install.bat when you follow the instruction. This will save user data.
[OnePlus 9RT] penguinus:
Fastboot ROM OxygenOS A.11 zip

4.3 GB file on MEGA

mega.nz
[OnePlus 9RT] Valdem:
FYI: Update original post with an A.11 firmware prepared by @penguinus.

Also add an unpacked boot.img for A.11.
[OnePlus 9RT] bonez56:
Can A.11 from this link be flashed over A.08 successfully now?

Ive been doing fastboot flash using update.bat of each version as it is released but I heard there were issues with A.11
[OnePlus 9RT] Valdem:
Yes. It can be flashed over A.08.
[OnePlus 9RT] loleepop:
This worked!!! I can now update successfully (both local and OTA) and my camera finally properly works within apps! Thank you!
[OnePlus 9RT] door_jam:
At the bottom of this page, there was a direct link to a rollback package which seems to be directly from OnePlus official web site:

OnePlus 9RT finally gets its first OxygenOS 12 Open Beta based on Android 12

OnePlus has announced the first Android 12-based OxygenOS 12 Open Beta release for the OnePlus 9RT. Read on to know more!

www.xda-developers.com

The file name was 2506_sign_MT2111_11_A_OTA_0070_all_72ca39_00011011.zip

Is this a legitimate original source of the OxygenOS 11 ROM? Can it be used in our move from ColorOS to OOS?
[OnePlus 9RT] Valdem:
This file is a rollback firmware from OxygenOS beta to OxygenOS A.07. You will not be able to install it from ColorOS (it will be rejected).

Only the unpaid way to convert device from ColorOS to OxygenOS is fastboot firmware with OxygenOS (like published in this thread).

The other way to flash device - contact with official of semi-official services who have access to MSMDownload version of OxygenOS firmware (For OxygenOS I heard only for paid service, for ColorOS it possible to contact official service for free).
[OnePlus 9RT] vuanh1408:
Hi everyone. I got a China 9RT running color OS 12.1 beta. This version of coloros can not enter fastboot mode, so I cant unlock the bootloader and install Oxygen os. I have tried using hard button, adb using adb reboot fastboot/ adb reboot bootloader. Does anyone know a way to downgrade from Color OS 12.1 beta back to color os 12?
[OnePlus 9RT] door_jam:
I am a mac user. I have downloaded the latest platform-tools & I can reboot fastboot my 9RT into fastbootD mode.

I see the instructions in the OP was for windows pc. For mac, do I need to worry something similar to " disable driver signing" and "Qualcomm driver" because it is a mac?

Also, which version of OxygenOS is more stable for use? A08? A11?
[OnePlus 9RT] roger1228253:
hi my friend, we can not visit mega web site in china mainland, can you upload ROM OxygenOS A.11 zip on yandex ? thank you very much
[OnePlus 9RT] Strain Grip:
How was your 5G in Preferred Network Type and VoLTE/Wi-Fi Calling? Does it work after installing OxygenOS ROM (Indian Version)? And what country you're using your 9RT?

We have the same case but a different variant (I have 12/256 GB Nano Silver Chinese Version).
[OnePlus 9RT] Crackeds:
Everything is working fine here in Germany. 5G, WiFi-Calling also.
[OnePlus 9RT] door_jam:
Did you need to install a switcher to get these working？
[OnePlus 9RT] Crackeds:
No
[OnePlus 9RT] archz2:
I am currently on A.07 which I flashed from post 1, using the 'update.bat' method. Should I update to A.08 then install A.11 or can I install the A.11 fastboot ROM update directly from here?
[OnePlus 9RT] anbell:
在开发者选项中，5G模式不要搞自动，调成NAS+SA模式，就可以用5G了。
[OnePlus 9RT] door_jam:
Do I need a Windows PC to run the script in the OP?

Can I do it in Terminal on a mac with SDK platform tool installed & running?
[OnePlus 9RT] DimaX111:
Hey, I'm not sure what you mean because I don't have this option in my Developer options settings menu
[OnePlus 9RT] kunkute28:
hi friend! How do I get OOS 12 C05 with an oneplus 9rt rooted. I can't find an oos 12 C05 fastboot rom to update. Please help me update.
[OnePlus 9RT] L0CK:
@Valdem

Thank you for posting these links and keeping the thread up to date. You may want to fix this typo.
[OnePlus 9RT] DimaX111:
I hate the phone and the [official!] beta OTA (now on C05 OxOS12)

many many bugs. the worst:

the pocket sensor isn't always working and things get pressed in the pocket,

phone calls do not always get a ring (but truecaller says their coming, and even with truecaller uninstalled - still not coming mostly)

**** THIS!
[OnePlus 9RT] archz2:
My OnePlus 9RT has A.07.which I flashed from post 1 sometime ago. Today I tried to flash A.08 using the upgrade.bat and the phone is stuck on the black screen with options for three languages. Moroever, when my phone booted during fastboot, my laptop (running windows 10) installed some drivers automatically. So I thought that all the necessary drivers are installed. I got some notifications in the bottom right of my screen, something like 'setting up device, device is ready, and some alphanumeric phrase separate by colons.

Now during the flashing, the cmd prompt is stuck on <waiting for any device>

Please suggest a solution.
[OnePlus 9RT] archz2:
P.S.

Solved the trouble. It was a driver issue. I went to device manager, and then right clicked over here on the 'update driver',

then manually installed Qualcomm 9003 drivers downloaded from the Google drive folder given here.

https://xdaforums.com/t/fastboot-ro...a-08-for-mt2110-devices.4404719/post-86589619

That fixed the issue.
[OnePlus 9RT] ethan_mars_93:
hi there i encounter bootloop after trying to flash Lineage OS , i cant flash A08 Frimwawre via fastbootd

and i hust can enter bootloader , after running the install.bat its reboot phone in order to enter fastbootd mode but it gets stuck in bootloop

can anyone help me ?
[OnePlus 9RT] lj3129:
My oneplus 9rt china version (MT2110) flash to OxygenOS A.11, almost everthing works well but can't call out and can't recevie calls. And I do local update to OOS 12.1, phone still can't do any calls. Can anyone help? Please, thank you.
[OnePlus 9RT] penguinus:
Strange... Was it working before flashing to Oxygen? What version of ColorOS it had before flashing to Oxygen?
[OnePlus 9RT] lj3129:
Yes, phone works well on ColorOS. I forgot which version of ColorOS was, maybe colorOS 12 A.09 or A.10. By the way, I'm using 4G not 5G. o_O:cry:
[OnePlus 9RT] penguinus:
5G may not work depending on country, but 4G should work with fallback to 3G or 2G. Does your operator support 3g an 2g also?

What I would suggest is to flash again. But be careful as you already upgraded to Android 12 C.05. You may got soft brick when trying to flash A ROM (Android 11) over C (Android 12) using fastboot. You may try to reflash C.05 via fastboot or downgrade to A.07 using local update in official updater. Downgrade will cause wipe of userdata, so do backup of needed data.

Downgrade ROM for local update

Fastboot Oxygen C.05
[OnePlus 9RT] lj3129:
Hi SIr, thank you for the method. After I downgrade to A07 also flash back to coloros, phone still not working, even it shows signal.

I found that it' the phone carrier's problem. Maybe the band of my carrier doesn't support 9rt. But I'm still confused that my oneplus 8 is totally functional with same phone carrier at same spot.Anyway, Now I flash 9rt to OOS11 A.11 and considering change to another carrier.

Again, thank you for reply.
[OnePlus 9RT] Gerzan148:
i have this exact same issue. How to fix this?
[OnePlus 9RT] Valdem:
just read the next post after post where you find the log. Author explained how he solved the issue.

To be short - this is an driver issue. No driver installed for fastbootd mode.
[OnePlus 9RT] Gerzan148:
i tried that but still haven't got any result....... it says best driver already installed for your device. What to do?

Exactly How long will the flashing process take?

Is it problem with windows 11?

should i go back to windows 10?
[OnePlus 9RT] Valdem:
Complete flashing duration is about 6 minutes, and device should reboot twice. You shouldn't do any operation with the device during this period. After successful procedure device will boot to the "installation wizard".

I can't give you any recommendation about OS, because I'm Linux user.
[OnePlus 9RT] Gerzan148:
it boots to fastbootd . Then waiting for device . Doesn't go beyond. I tried every driver . I have no idea what is happening.

Any other Suggestions? it seems Everybody else is able to flash except me 😤
[OnePlus 9RT] Gerzan148:
it boots to fastbootd(3 languages setup) . waiting for device in cmd . Doesn't go beyond. I tried every driver . I have no idea what is happening.

Any other Suggestions? it seems Everybody else is able to flash except me 😤
[OnePlus 9RT] door_jam:
I have my Chinese 9RT & preparing to switch to Oxygen OS. I am preparing my Windows OS just to minimize any hiccup when I do it.

I have not installed the ROM yet. But when I was prepping my PC to detect the 9RT in both Fastboot & Recovery, I used the drivers from this post & the device was detected. Give it a go to see if these drivers work for you.

https://xdaforums.com/t/guide-fix-f...all-official-driver-in-windows-10-11.4396501/

Update: Successfully installed the Indian ROM on my Chinese 9RT. Phone is good. Though ColorOS was not bad, but it kills too many apps & many notifications were lost. Thanks to everyone who posted.

My very limited experience is, making sure the device can be detected by "fastboot devices" & "adb devices" commands before proceeding with flashing will avoid a lot of the problems, i.e. getting the drivers working.