Unable to switch from IN OOS to EU OOS - OnePlus 8T Questions & Answers

Currently I'm on latest Indian version of OOS (switching from Hydrogen) and I wanted to install the EU one but failed. The local upgrader said as pic attached.

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Full Zip GM57AA 10.3.0

I've got my op7 and wish I could have the full zip for 10.3.0 GM57AA, does anyone here have it?
Also, do you see any advantage on changing from AA to BA?
PS: I live in Brazil
sekk said:
I've got my op7 and wish I could have the full zip for 10.3.0 GM57AA, does anyone here have it?
Also, do you see any advantage on changing from AA to BA?
PS: I live in Brazil
Click to expand...
Click to collapse
Go to playstore & download Oxygen Updater (is unofficial app but works very well)
open it,go settings - Advanced mode = ON / Update method = Full update
go back & download 10.3.0 if you want (2072mb)
__No...stay in GM57AA (global) if you live in brazil...
GM57BA = EU OxygenOS...
[for Fastboot Roms read here : https://forum.xda-developers.com/oneplus-7/how-to/rom-stock-fastboot-roms-oneplus-7-t3937478 ]
Repository thread OOS : https://forum.xda-developers.com/oneplus-7/how-to/oneplus-7-repo-oxygen-os-builds-t3937152 ]
daitalos said:
Go to playstore & download Oxygen Updater (is unofficial app but works very well)
open it,go settings - Advanced mode = ON / Update method = Full update
go back & download 10.3.0 if you want (2072mb)
__No...stay in GM57AA (global) if you live in brazil...
GM57BA = EU OxygenOS...
[for Fastboot Roms read here : https://forum.xda-developers.com/oneplus-7/how-to/rom-stock-fastboot-roms-oneplus-7-t3937478 ]
Repository thread OOS : https://forum.xda-developers.com/oneplus-7/how-to/oneplus-7-repo-oxygen-os-builds-t3937152 ]
Click to expand...
Click to collapse
The fastboot rom idk if it's updated, the oxygen os repo is not, it stopped on 10.0.2
Also, I can get the 10.3.0 file from Oxygen updater, or just directly update the smartphone? Is there any difference between 10.0.3 and 10.3.0? because on fastboot thread, mauronofrio has only made the images for 10.0.3
sekk said:
The fastboot rom idk if it's updated, the oxygen os repo is not, it stopped on 10.0.2
Also, I can get the 10.3.0 file from Oxygen updater, or just directly update the smartphone? Is there any difference between 10.0.3 and 10.3.0? because on fastboot thread, mauronofrio has only made the images for 10.0.3
Click to expand...
Click to collapse
First,take the 10.3.0 zip( full update )from oxygen updater as I told you. update your device via Local Update & Reboot device...
open again oxygen updater app, go settings - advanced mode = disabled / update method = Incremental update, go back & download the latest 10.3.1 update & install it again via Local update...
of course 10.0.3 & 10.3.0 is different builds...10.0.3 is older...The latest oos is 10.3.1
https://postimg.cc/gallery/36bbalage/
no needed fastboot rom etc....I hope your device is STOCK!
For any help etc here : https://forum.xda-developers.com/oneplus-7/help/help-thread-question-noob-friendly-t3954564
daitalos said:
First,take the 10.3.0 zip( full update )from oxygen updater as I told you. update your device via Local Update & Reboot device...
open again oxygen updater app, go settings - advanced mode = disabled / update method = Incremental update, go back & download the latest 10.3.1 update & install it again via Local update...
of course 10.0.3 & 10.3.0 is different builds...10.0.3 is older...The latest oos is 10.3.1
https://postimg.cc/gallery/36bbalage/
no needed fastboot rom etc....I hope your device is STOCK!
For any help etc here : https://forum.xda-developers.com/oneplus-7/help/help-thread-question-noob-friendly-t3954564
Click to expand...
Click to collapse
some said 10.3.0 and 10.0.3 are the same, but 3.0 for global and 0.3 for europe, but I don't who to trust at all...
also, I often use magisk, and I really DON'T LIKE to update system while rooted, so I prefer going for flashing the whole stock rom, update through OTA, and then, just arter these steps, install twrp and magisk... what do you recommend as a step-by-step to do so? remember, I don't want to flash stock while rooted
sekk said:
some said 10.3.0 and 10.0.3 are the same, but 3.0 for global and 0.3 for europe, but I don't who to trust at all...
also, I often use magisk, and I really DON'T LIKE to update system while rooted, so I prefer going for flashing the whole stock rom, update through OTA, and then, just arter these steps, install twrp and magisk... what do you recommend as a step-by-step to do so? remember, I don't want to flash stock while rooted
Click to expand...
Click to collapse
https://forum.xda-developers.com/oneplus-7/how-to/guide-unlock-bootloader-flash-twrp-root-t3954559
no build are the same....otherwise, there would be no updates(for Brazil follow GM57AA (global)- yes, GM57BA is Europe version OOS)
I told you..for any help,question,etc,just read carefully in OP - Specific Threads and Guides for Oneplus 7....all, step by step are described
You can post any question there and you'll receive help...
* https://forum.xda-developers.com/oneplus-7/help/help-thread-question-noob-friendly-t3954564

Question Oneplus 9 | LE2113 | 11.2.4.4.LE25AA | How do I convert to EU firmware

Hi there, I bought a Oneplus 9 (12/256) directly from Oneplus Singapore. Everything is great except for the fact that I hoped to update the software to a newer version ( 11.2.7.7 / 11.2.6.6 ) to enjoy the bug fixes and improvements.
The phone came on 11.2.3.3.LE25AA
The default system update showed that it was the latest version.
Okay......then I learnt about Oxygen Updater and used it to update to 11.2.4.4.LE25AA
However, when I proceeded to update further to 11.2.5.5, the app was still showing me that the latest software is 11.2.4.4 (What??)
I then learnt that my phone was running on Global Firmware which was stuck on 11.2.4.4 and though the incremental update from 11.2.5.5 to 11.2.6.6 was available, without being able to update to 11.2.5.5, I was stuck on 11.2.4.4...........
Then I researched my model number and realised that LE2113 meant my Oneplus 9 (purchased directly from Oneplus) was the EU variant.....running the Global firmware......sigh......
So here I am now, seeking advice from you knowledgeable folks, how do I go about getting my phone to run on the EU firmware so that I can enjoy faster(?) updates.
Is it as simple as downloading the full zip of 11.2.6.6.LE25BA from Oxygen Updater and using Local Upgrade in the default System Update? Will this wipe my data?
Or will I have to root/flash or something complicated
Just flash the full BA zip.
_MartyMan_ said:
Just flash the full BA zip.
Click to expand...
Click to collapse
By flash, are you referring to the system updater in the settings app?
Slofh said:
By flash, are you referring to the system updater in the settings app?
Click to expand...
Click to collapse
Yes
Yeah I have the same problem
Waiting for 11.2.7.7 BA

Can I install Oxygen OS 11 Indian Rom on KB2000?

As the title says , I've OnePlus 8T KB2000. Currently I'm using the international global version of Oxygen OS (KB05AA). Can I change it to Indian variant?
Yes you can. Easiest way is to flash a full indian OTA package through the local update function in system updater. That should work as long as indian OTA have the same or higher version number compared to your currently installed global version.
If that don't work you can always extract the partitions from the payload.bin in the indian OTA zip and flash through fastboot. Following this guide https://forum.xda-developers.com/t/guide-unbrick-or-restore-to-oos-using-only-fastboot.4289013/

How to change Regions with the new oxygen os 12?

Hi,
I installed the in version of oxygen os12 on my eu 8t by accident. How can I can't it back to eu (when eu releases)?
I suppose that OOS12 won't let you flash EU version of the same firmware, as it was on OOS11.
So, there are several options, as i see it:
1. MSM to OOS11, then update to OOS12 EU (but you will loose your data, unless you backup).
2. Wait for the next update and flash EU version.
3. As there is no working TWRP under OOS12 with data decryption now, you can try to flash OOS12 EU via fastboot, though i'm not sure, you will succeed, as it is untested at the time of writing.
xDrAcHeNx said:
Hi,
I installed the in version of oxygen os12 on my eu 8t by accident. How can I can't it back to eu (when eu releases)?
Click to expand...
Click to collapse
Another option is to use the downgrade package to go back to OOS 11

How to install OOS 11 Europe on top of OOS 11 Global on OnePlus Pro 7

Hello,
I have somehow managed to install OOS 11 (build 11.0.9.1GM21AA) Global on my OnePlus Pro 7 Europe.
I would like to fix this to use OOS 11 build build 11.0.9.1GM21BA instead (without losing my data).
When I download the corresponding OOS 11 full package and try a local install, it tells me that "The package version that I'm trying to upgrade is older than current one. Downgrading is not allowed to avoid boot issues" (or the like).
How can this be ? This should be exactly the same level.
Can someonehelp me to achieve this ?
Thanks

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