Develop Bugs

The differences between Android 9 and Android 10

I recently brought Rmn8p with miui 11.0.6 (global) , wait to unlock bootloader. After that flash preloader & lk then trwp and root.
I was wondering what's the difference between android 9 and android 10? Is it almost the same like I read at some post? Someone has updated to android 10 may share some viewpoints with us, thanks!
Already unlocked bootloader , root and xposed , phone recorder installed. Thanks to those pioneers.

donkeyman1234 said:
I recently brought Rmn8p with miui 11.0.6 (global) , wait to unlock bootloader. After that flash preloader & lk then trwp and root.
I was wondering what's the difference between android 9 and android 10? Is it almost the same like I read at some post? Someone has updated to android 10 may share some viewpoints with us, thanks!
Click to expand...
Click to collapse
Hey. I think this is widely discussed elsewhere. Just search for "MIUI Android 9 vs MIUI Android 10" in Google or YouTube. You'll find way more information there than you would ever find here regarding such generic topics. Have fun ?

Question I can't roll back LE2120

Good morning, hope someone point me in the right direction, i have a Oneplus 9 Pro chinese LE2120, came with indian rom, but I am trying to move to the global one or european, anytime i try to flash the downgrade zip it shows a warning that i can't to downgrade due to avoid booting up failure, could somebody advice me with this please?
Thanks in advance.

pankk said:
Good morning, hope someone point me in the right direction, i have a Oneplus 9 Pro chinese LE2120, came with indian rom, but I am trying to move to the global one or european, anytime i try to flash the downgrade zip it shows a warning that i can't to downgrade due to avoid booting up failure, could somebody advice me with this please?
Thanks in advance.
Click to expand...
Click to collapse
Get a new downgrade zip that seems like it's a reg zip not downgrade zip
Try rollback packages from here
Downgrade OnePlus Android 12 to Android 11 [OxygenOS 12 to OxygenOS 11]
In this guide, we will show you the steps to downgrade OnePlus devices from Android 12 (OxygenOS 12) to Android 11 (OxygenOS 11)
www.droidwin.com

toolhas4degrees said:
Get a new downgrade zip that seems like it's a reg zip not downgrade zip
Try rollback packages from here
Downgrade OnePlus Android 12 to Android 11 [OxygenOS 12 to OxygenOS 11]
In this guide, we will show you the steps to downgrade OnePlus devices from Android 12 (OxygenOS 12) to Android 11 (OxygenOS 11)
www.droidwin.com
Click to expand...
Click to collapse
Thank you, i will try it!

Also I believe they mentioned a "rollback apk" in addition to the downgrade zip that needed to be used to roll back.

Forgot to mention that I am in 11.2.9.9

pankk said:
Forgot to mention that I am in 11.2.9.9
Click to expand...
Click to collapse
I have exactly the same phone and I have no problem running the India version. to run the global version wait for the next full global update. download it from the oxygen update and install it manually. I'm gonna do the same because I would Ike running the global version before oxygen Os 12 come.

Thank you for your response, that's what i want to do, run global before Oxygen 12.

Question Question about A12 OOS rollback

Hello all,
I understand that there are local update files to rollback to android 11 from 12 but is it possible to still use the A11 msm tools while on Android 12 OOS available to us ??

jkt97401 said:
Hello all,
I understand that there are local update files to rollback to android 11 from 12 but is it possible to still use the A11 msm tools while on Android 12 OOS available to us ??
Click to expand...
Click to collapse
MSM tool does not depend on the OS, I personally haven't used it on the 12 but it should work fine and restore your device to its own version. As always take a backup before you start as it will wipe all when you use the tool. Here is the reference thread for the tool.

jkt97401 said:
Hello all,
I understand that there are local update files to rollback to android 11 from 12 but is it possible to still use the A11 msm tools while on Android 12 OOS available to us ??
Click to expand...
Click to collapse
Yes, I did it several times.

Downgrade from Android 11 to 10 or 9

After updating my Nokia 8.1 to Android 11 my phone lost entire mobile network, I have tried many ways to fix, but I can't, Can anyone please help me to find a way to downgrade to best older version Android 10 or 9?

OP 7T downgrade from stable Android 12 to Android 11 [EU version]?

Hi guys!
Just today, I updated my 7T [EU model] to the new, stable version of OxygenOS running on Android 12. However, I quickly realized that I much more prefer the old stable OxygenOS 11. Is there a way to downgrade to that version? I've tried scouting online, however, I only found downgrade links to Indian models.
Thanks very much!

Hi my friend!
Just check the official Oneplus forum (oneplus.net). There is a post OxygenOS 12 MP2 for Oneplus 7T/7TPRO that is pinned. There is a download link for all versions. Note that your cell phone will be erased!
Link: https://community.oneplus.com/thread?id=1181216999612088323&fromCircle=true

Thanks a lot, worked 100%

I just upgraded from 11 to 12, and i loose my connection every hour. Only thing that can bring back my signal is switch the phone into flightmode and back.
So will revert back to 11 as you did.
One questoin did the roll back wipe the phone or was apps and other settings still on the phone?

torben5247 said:
I just upgraded from 11 to 12, and i loose my connection every hour. Only thing that can bring back my signal is switch the phone into flightmode and back.
So will revert back to 11 as you did.
One questoin did the roll back wipe the phone or was apps and other settings still on the phone?
Click to expand...
Click to collapse
This rollback method will erase all the contents of the phone, please be sure to backup first.

POT_Tomy said:
This rollback method will erase all the contents of the phone, please be sure to backup first.
Click to expand...
Click to collapse
Is it possible to keep root through the rollback if I patch the boot image with Magisk before rebooting?
Edit: Just downgraded and had to root again after the downgrade (patched boot.img)

I am in the same situation. Upgraded to Android 12 and I'm having so many problems. I too am now downgrading. And actually moving away from OnePlus. Too many problems. Gonna try Carl's Nothing phone.

Hey there, Is it the original thread on offi OP site is not available anymore.
Do You guys remember the steps and what was needed to do the downgrade by chance ?
Help appreciated.

Iry said:
Hey there, Is it the original thread on offi OP site is not available anymore.
Do You guys remember the steps and what was needed to do the downgrade by chance ?
Help appreciated.
Click to expand...
Click to collapse
How to Downgrade OnePlus 7/7T Series from OxygenOS 12.1 to OxygenOS 11
Follow the method to Downgrade OnePlus 7/7T Series from OxygenOS 12.1 to OxygenOS 11 manually.
www.theupdatebox.com

HueyT said:
How to Downgrade OnePlus 7/7T Series from OxygenOS 12.1 to OxygenOS 11
Follow the method to Downgrade OnePlus 7/7T Series from OxygenOS 12.1 to OxygenOS 11 manually.
www.theupdatebox.com
Click to expand...
Click to collapse
Hey,
Thanks for the help.
I also found a working solution on OP site as well.
If someone is looking for a solution, currently this thread is alive https://community.oneplus.com/thread/1181216999612088323
Thanks & GL.