How To Guide Rollback RMX3311

[Stano36]

How to roll back to Android 12 for RMX3311.

You do everything at your own risk, I am not responsible for any damages.

This tutorial will allow you to rollback to Android 12 for RMX3311. There is no official package so this will be an alternative method that works with a locked bootloader.
The instructions are divided into two stages

1.stage, Rollback of the Indian version.
Download Rollback_IN and put it in the root directory of the internal memory.

RMX3312_ROLL_BACK_android12_IN.zip

Installing a third-party software update application. Go to smartphone settings, then Applications > Management. applications, 3 dots and check the Show System! Look for SOFTWARE UPDATE and clear this app's data and cache! Then install the Android 13 Software Update Installer

OPLocalUpdate_For_Android13.apk

Installing an update through a third-party application!
Next, open the app we installed and update through it (the gear on the top right and select the .zip file in the root directory of the internal memory), an installation window should appear! If everything is fine, the process will start and you will be prompted to restart your smartphone after installing the update. Installation takes 20-25 minutes.

After restarting the smartphone, you will have a device without IMEI and SIM!

2.stage, return to the European version:
Download the modified Full OTA and put it in the root directory of the internal memory.

RMX3311_11.A.21_EU_wipe.zip

Third party software update application installation. Go to smartphone settings, then Applications > Management. applications, 3 dots and check the Show System! Look for SOFTWARE UPDATE and clear this app's data and cache! Then install the Android 12 software update installer

OPLocalUpdate_For_Android12.apk

Installing an update through a third-party application!
Next, open the app we installed and update through it (the gear on the top right and select the .zip file in the root directory of the internal memory), an installation window should appear! If everything is fine, the process will start and you will be prompted to restart your smartphone after installing the update.
Installation takes 20-25 minutes.

After restarting the smartphone, you will have a fully functional Android 12 device

 

[RevDeisDou]

Is it worth?

 

[Stano36]

There were many questions about Downgrade, so I wrote a tutorial.
The procedure has been verified several times, so there should be no problem.

 

[RevDeisDou]

I'm successfully rollback. But i can' t do local update. Software update forcing me to c05 Android 13.
How can i update A21 to A22?

If I use OP local update, my data has gone?

 

[Stano36]

I'm successfully rollback. But i can' t do local update. Software update forcing me to c05 Android 13.
How can i update A21 to A22?
View attachment 5994593
If I use OP local update, my data has gone?

Turn off the Internet, clear the Software Update application data, and then you can manually install A.22.

Edit:
After the updates, delete the data of the Software Update application and disable Internet access so that it does not search for updates.

 

[RevDeisDou]

Turn off the Internet, clear the Software Update application data, and then you can manually install A.22.

Thank you. I'm updating to A.22 now.
Meanwhile, i see cpu temp limit higher than Android 13, on Android 13, max cpu temps are stay on 80. But in the Android 12, easily reach 90 and above.

 

[Stano36]

Thank you. I'm updating to A.22 now.
Meanwhile, i see cpu temp limit higher than Android 13, on Android 13, max cpu temps are stay on 80. But in the Android 12, easily reach 90 and above.

I don't own a GT2, so I can't judge those values.

 

[RevDeisDou]

I don't own a GT2, so I can't judge those values.

I just wanted to say for info.

 

[abdominazer]

How to roll back to Android 12 for RMX3311.

You do everything at your own risk, I am not responsible for any damages.

This tutorial will allow you to rollback to Android 12 for RMX3311. There is no official package so this will be an alternative method that works with a locked bootloader.
The instructions are divided into two stages

1.stage, Rollback of the Indian version.
Download Rollback_IN and put it in the root directory of the internal memory.

RMX3312_ROLL_BACK_android12_IN.zip

Installing a third-party software update application. Go to smartphone settings, then Applications > Management. applications, 3 dots and check the Show System! Look for SOFTWARE UPDATE and clear this app's data and cache! Then install the Android 13 Software Update Installer

OPLocalUpdate_For_Android13.apk

Installing an update through a third-party application!
Next, open the app we installed and update through it (the gear on the top right and select the .zip file in the root directory of the internal memory), an installation window should appear! If everything is fine, the process will start and you will be prompted to restart your smartphone after installing the update. Installation takes 20-25 minutes.

After restarting the smartphone, you will have a device without IMEI and SIM!

2.stage, return to the European version:
Download the modified Full OTA and put it in the root directory of the internal memory.

RMX3311_11.A.21_EU_wipe.zip

Third party software update application installation. Go to smartphone settings, then Applications > Management. applications, 3 dots and check the Show System! Look for SOFTWARE UPDATE and clear this app's data and cache! Then install the Android 12 software update installer

OPLocalUpdate_For_Android12.apk

Installing an update through a third-party application!
Next, open the app we installed and update through it (the gear on the top right and select the .zip file in the root directory of the internal memory), an installation window should appear! If everything is fine, the process will start and you will be prompted to restart your smartphone after installing the update.
Installation takes 20-25 minutes.

After restarting the smartphone, you will have a fully functional Android 12 device

Is it possible to update to indian C17 from RMX3311_11.A.21_EU_wipe.zip?

 

[Stano36]

Is it possible to update to indian C17 from RMX3311_11.A.21_EU_wipe.zip?

If you have the RMX3311 included, after installing the Indian Rollback you will not have an active SIM card and you will lose your IMEI.

 

[abdominazer]

If you have the RMX3311 included, after installing the Indian Rollback you will not have an active SIM card and you will lose your IMEI.

I see, but can I flash RMX3312_11.C.17_IN_202309011435 after the Indian rollback to get active Sim card and IMEI?

 

[Stano36]

I see, but can I flash RMX3312_11.C.17_IN_202309011435 after the Indian rollback to get active Sim card and IMEI?

You can install it, but it doesn't change the fact that if you have an RMX3311, there will be no SIM and IMEI.

 

[abdominazer]

You can install it, but it doesn't change the fact that if you have an RMX3311, there will be no SIM and IMEI.

That's not an option then.
I would like to have call recording option. Is there some other way?

 

[Stano36]

That's not an option then.
I would like to have call recording option. Is there some other way?

It is currently impossible due to GDPR.