yashsingh1/xdaforums huggingface dataset:
[General Questions and Answers] nmyshkin:
Thanks for your response. I should have tried that (if I didn't already) so I did this morning to be sure, with a known working-at-the-time backup of the CM12.1 ROM. Still no dice.

I got to thinking about the possibility of ATT sending out a security patch or something and then thought about an old repeater I had in a closet (not so old that it was not set up with the new modem). It's one of those WWRT flashed Linksys modems. Ancient. Was working the last I tried, but I thought maybe it would not be able to pass along whatever potential security issues the newer ATT modem/router was exhibiting with this ROM.

I was right. It connected right away to the repeater, full internet access, etc.

Here's what else I know so far. I have a handful of other ROMS from CM11 up to LNOS 14.1, all backed up from a known working configuration. It just happens that the CM 12.1 ROM gave the best performance on the tablet (admittedly near the edge) and that's where I settled eventually.

All of the backups, when restored, connected to the new ATT modem without issue.

So....I can only guess that the developer of the CM 12.1 ROM left something out which hasn't shown up until now. Interesting that even the CM 11 ROM connects without difficulty.

Now I need to decide what to do with the 8 GB tablet (the 16 GB version running AOSP 7.0 magically works after many an attempt to connect to the ATT modem). I hate to go back to CM 11 because many websites don't display properly with available browsers and there are other SSL issues as well.

Maybe take another look at CM 13....or wait. I won't have this ATT modem forever. Perhaps the tablet will work again with some other setup (as it does with open networks now).
[General Questions and Answers] Droidriven:
You might try flashing different versions of modem for your tablet to see if any of them work better. Yeah, it sounds like something might have changed in CM but I doubt it is anything the ROM developer did, it is more likely something that the CyanogenMod team changed in the CM source code. I had a Straight Talk Galaxy S3 years ago that didn't require a SIM to be used on the Straight Talk network but when flashed with CM ROMs, it wouldn't connect to mobile data or be able to send MMS without a SIM inserted, this was around the same time as your ROMs were built. The 4.4 ROMs worked without the SIM but the last few builds of 4.4 and above ROMs would not work without the SIM. This was a result of something that the CM team changed in the device's RIL(radio interface level).

You may be facing an issue that is also caused by something they changed in your later ROMs. It could also be because things have changed in the networks that we use today, different bands, network types and protocols.
[OnePlus Nord 2 5G] ruh01:
After waiting many months for an update for my OnePlus Nord 2 Europe (EUEX), I managed to easily get the Android 12 update. Shortly, I installed over my EU Android 11 (with A.21 version and June patch security) the Indian firmware C.09 with September patch.

Phone is not rooted, bootloader is locked and has the orriginal recovery.

So in OxygenUpdater I selected India and full rom, instead of EU. After download, I shut down the phone, then by pressing Power and Volume down I entered recovery. I selected the desired language, then Local install and the firmware which is a file with long alphanumeric name. The full update takes no more than 5 minutes.

No data is deleted, the apps and the settings are there.

Greetings and credits to @asotmike who helped me.

Interface is buttery smooth, no lags, no bugs after 6 hours of playing with the phone. All functions work ok, Vowifi, Volte and 5g working fine in Romania.

For now, I don't know if there is an easy way to return to Europe version, without using MSM tools and losing data, so please everyone think well if you take the risk of making this movement.
[OnePlus Nord 2 5G] roldev:
Can you enter fastbootd and BROM mode?

Updating to EU ROM will be posible when / if OP releases full ROM > C.09 for DN2103.
[OnePlus Nord 2 5G] ruh01:
Adb reboot fastboot works, it enters fastboot mode where it shows Format data, Reboot, Power off. In brom mode how can I enter, to test later? And I think you are right about moving back to Eu, only when a Eu build C.09 or newer is released
[OnePlus Nord 2 5G] greg10:
everything ok for me also. thanks to OP for this, finally we got android 12.
[OnePlus Nord 2 5G] muppetz:
Thank you from Romania also ! A12 is something else ... It's OK for now .
[OnePlus Nord 2 5G] ruh01:
Glad you like it guys! Hope to see many updates now for our great phone.
[OnePlus Nord 2 5G] roldev:
You confirm that fastbootd is not available anymore. The phone boots to recovery.

For testing BROM mode you need mtk client. To enter you need to switch off completely the phone, connect the USB cable to the PC only. Then connect this cable to the phone and immediately press and hold all 3 buttons ( vol+, vol-, power ). The device screen should remain completely black and mtk client should detect your phone and connect it. Once detected you can release all the buttons.

I suppose, as per other reports that BROM is disabled too, so no more easy custom ROM installation or servicing.

Thank you.
[OnePlus Nord 2 5G] ruh01:
For recovery and fastboot there is a difference, but small.

If I use adb reboot recovery I get to select language and after there is a menu named Recovery with options Fromat data, Reboot device and Power off.

If I use adb reboot fastboot, I select language and after there is a menu named Fastboot but with the same options as in case of recovery.

I cannot test Brom because I have downloaded several versions of MTK client but none of them even starts on my computer...
[OnePlus Nord 2 5G] roldev:
Yes, install mtk client involves installing drivers, python, etc. It's a bit complicated. Unfortunately without fastbootd and BROM, one cannot customize the phone. If is ok with stock no matters.

Cheers.
[OnePlus Nord 2 5G] ruh01:
I am very happy with this non-orriginal version. I found no problems yet, in 1 and half day. Should OnePlus start pouring with updates for EU, maybe I will return with a newer variant of DN2103. Else, adieu. Everything works fine, all apps, network bands work fine. Fast, smooth, no bugs, same great camera and performante, no sound problem. I will study further and play with it.
[OnePlus Nord 2 5G] muppetz:
Unfortunately I found some small insignificant bugs like annoying slow connection to WiFi 6 , A11 was quite fast . Ambient display still don't work , picking wallpaper from Settings is blocked (I can set wallpaper only from particular 3.rd launcher apk . Percent battery is randomly shown despite it isn't set . Battery drain is bigger then A11 . Browsing is also slower . Fingerprint gave several errors and send me to PIN even I re-enroll new fingerprint , animation are ugly . Proximity sensor has also rare errors . More then that there are some stupid bloatware (maybe for Indian Market ). I didn't use for now Bluetooth , Android Auto , Portrait camera , and other complaints of indians users ... But overall A12 is working fine although I expect further EU version if it comes anymore !
[OnePlus Nord 2 5G] ruh01:
Untill we have a proper EU version and a good update frequency for it, I am more than happy to stay with this version. We'll see if this happens, ever...
[OnePlus Nord 2 5G] muppetz:
Yeah , right ... Am I pleased with A12 ? NO ! Should I go back to A11 ? NO... hahahahaha
[OnePlus Nord 2 5G] MarcinXDA:
thanks. it works also for me. Model name changed to DN2101 XD
[OnePlus Nord 2 5G] greg10:
tbh, i didn't find any bugs on IN version. 5G is working fine (Greece), wifi is the same fast as A11 (less than 1 sec.), bluetooth also ok. i can't compare the battery drain because i own the phone for less than a month but i think it's the same as before. if they decide to give EU version and update it regurarly maybe I will switch again, but I don't mind staying with the IN that updates every month. cheers!
[OnePlus Nord 2 5G] roldev:
They release primary for DN2101. When fixed the main bugs, OP made it available for the DN2103. So we can expect European releases will be more stables, but delayed...
[OnePlus Nord 2 5G] greg10:
the latest version they released for EU was C.01 and we weren't able to get the update, so I'm not really sure for that
[OnePlus Nord 2 5G] roldev:
They have weird schedule. C.01 is available for Spain since the first day released. Through system update or oxygen updater.
[OnePlus Nord 2 5G] jis251:
HI I have EU and version is DN2103_11_ cC08 got it about 2 weeks ago. Before update I had C.01
[OnePlus Nord 2 5G] roldev:
Thanks for confirming. There are various regions which got the C.08. My oxygen updater still shows C.01 as latest available.
[OnePlus Nord 2 5G] jis251:
Yes mine too. Oxygen Updater is not up to date :)
[OnePlus Nord 2 5G] roldev:
Wow, didn't know it. I disabled system updater and check only oxygen to stay informed. No plans to upgrade to OOS12 here ;)
[OnePlus Nord 2 5G] MarcinXDA:
Android 11 - 4135 (3d mark wild life Test)

Android 12 - 4577 (3d mark wild life Test)

nice
[OnePlus Nord 2 5G] roldev:
Thanks for this. There are better gamers phones around. Some users prefer stability and flexibility over few % of performance.
[OnePlus Nord 2 5G] Wuzimu:
I updated my dn2103 yesterday to India C09. I didn't notice any bugs for now, bt is working fine (also in the car). One thing I noticed is animations- now are much more smooth than on .A21 software.

I'm really happy with this version, thanks to for that trick.

My phone was bought in Poland.
[OnePlus Nord 2 5G] jollran2005:
Apparently C.10 was released for India and EU today, is there a way to switch from IN c.09 to EU c.10?
[OnePlus Nord 2 5G] roldev:
The instructions for the first post should work ok, when both are available through oxygen updater.
[OnePlus Nord 2 5G] CoinsClassic:
ㅤ
[OnePlus Nord 2 5G] jollran2005:
This is DN2103 aka EU c.10
[OnePlus Nord 2 5G] muppetz:
I don't think all EU users who updated to indian C09 will receive C10 because security patch on both is September . C10 was released only for C08 firmware on both variants , EU & India . C09 remain . Strictly observing this trend of updates spread over the world , thing I really don't understand , C09 wil be update after several months .
[OnePlus Nord 2 5G] roldev:
Thanks for the update.
[OnePlus Nord 2 5G] jollran2005:
I recieved c.10 on my eu updated to c.09 india
[OnePlus Nord 2 5G] greg10:
oxygen updater or system update?
[OnePlus Nord 2 5G] roldev:
Good news for EU users. Finally a version which cannot be considerate beta.
[OnePlus Nord 2 5G] ruszok:
So you have A21 eu -> then c09 in full -> now c 10 eu inc?
[OnePlus Nord 2 5G] muppetz:
I'm a little bit foggy too , how Jollran2005 updated from C09 to C10 . Through system updater or Oxygen Updater ? C09 hasn't update setting from local update so it can't be updated from Oxygen Updater . Since firmware is India , how gave him EU version ? I don't understand , he must explain ...As previously said both C09 and C10 have September patch . This mean the same situation like updating from A11 - A21 to A12- C01 , this can't be possible as I said , reading many threads from indian OnePlus forum all C08 (India) and C01(EU) received C10 . So ?
[OnePlus Nord 2 5G] jollran2005:
System

Sorry, I'll clear it up! I was on a.21 EU and updated to full c.09 india through oxygen updater. So now I'm on c.09 India.

In system settings I have received c.10 india but I haven't updated yet as I would prefer to update to c.10 eu. Hope it makes sense.
[OnePlus Nord 2 5G] muppetz:
Ok , there you go ! Thank you
[OnePlus Nord 2 5G] endva3:
Here is my experience:

I was on A.21 EU. Flashig to C.09 India via oxygenupdater. Then i got update to C.10 India. After install this OTA(C10)next day i do rollback to A.20 India. Then flash C.01 EU via oxygenupdater and then i got OTA to C.10 EU.

No root, bootloader locked.
[OnePlus Nord 2 5G] ruszok:
@endva3 - but with data loss. Same you can do with rollback package from eu.

@jollran2005 - now it make sense. But you (also we) need eu full package more than C.09.
[OnePlus Nord 2 5G] Hot-Proton:
Dont get c 10 eu and oygen update also show nothing.
[OnePlus Nord 2 5G] muppetz:
Initially DN2103 , updated to C09 India a few time ago . Today I received OTA - C10 update also for indian version DN2101 . OTA was 138 (or 136) MB and it was some bugs fixed bugs about . All works fine . I don't mind using indian version since my phone works well . Very strange and annoying for EU users this lack of updates !!!
[OnePlus Nord 2 5G] jis251:
HI and good you are happy with Indian version

I got EU C.10 few days ago.

Strange is that Oxygen Updater still gives C.01 as the "latest"
[OnePlus Nord 2 5G] ruszok:
C01 od the lastest full rom. It's because of that.
[OnePlus Nord 2 5G] jgen7:
How did you rollback to A.20 India? Did you use the packages provided by OnePlus during the beta?
[OnePlus Nord 2 5G] kachimasu:
Did someone got the Android 12 update?

They pushed the DN2103_11.C.10 update for EU, but not sure if it's gonna arrive at all.

I'm still on A.20 with April security patch.

OnePlus Community

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[OnePlus Nord 2 5G] muppetz:
Apparently not . Some jumped to Indian C.10 (included me , happy with it) , some say they received trough Oxygen Updater only if they used a VPN ( Greece and/or Germany ) but I've had tested and ... nothing . Majority didn't received OTA nor Oxygen Updater, although other only with EU - C.01 received C.10 . A few of them .

It's a real mess with these updates .
[OnePlus Nord 2 5G] jis251:
I guess I am one of the "lucky ones", I received C.01 then C.08 and now I am on C.10, EU versions.

My location is Finland
[OnePlus Nord 2 5G] kachimasu:
Oxygen Updater popped out the C.01 update for me but I'm still scared to install it via the app
[OnePlus Nord 2 5G] muppetz:
Go for it , it's safe . Who knows when OTA shall arrive !? If it will arrive ...Ever !
[OnePlus Nord 2 5G] jardakiss:
I'm afraid that in Central Europe (Czech Republic) we will be stuck forever with 2103_11_A.21 and June security patches :-( I got tricked into believing that the manufacturer promised to guarantee two major system updates and three years of security patches.
[OnePlus Nord 2 5G] bilool:
The same for me in France.
[OnePlus Nord 2 5G] chtitlou:
Surprisingly, in France, I got the C.01 quite rapidly after the announcement (last July or August, can't remember exactly), the official way through system update. Then I got all the OTAs till the C.10 today.

However, my wife bought the very same phone just before the A12 rollout, and is still stuck to A.21 today. Same phone, same version, same region, different treatment...

I definitely don't get how this mess is working...
[OnePlus Nord 2 5G] bilool:
I could have the C.01 if I activate the advanced mode on Oxygen Updater. What do you think about that ? Is it safe to apply it ?
[OnePlus Nord 2 5G] jollran2005:
No, if you're on a.21 it won't work since c.01 has lower build number than a.21!
[OnePlus Nord 2 5G] 8vasa8:
You can downgrade to A20 with mtk client and use oxygen after that. I am also using A21 (Czech), if you upgrade to C10 you can't use mtk client anymore..
[OnePlus Nord 2 5G] jollran2005:
https://xdaforums.com/t/downgrade-nord-2-from-a-21-to-a-20-install-android-12.4501561/

If u want to downgrade to a.20 and then update https://xdaforums.com/t/downgrade-nord-2-from-a-21-to-a-20-install-android-12.4501561/
[OnePlus Nord 2 5G] bilool:
Thanks but too lazy to do it. This is the first android (nexus, nextbit, oneplus by the past) I bought since many years without root it. Disappointed with oneplus for this time. Thanks for reply !
[OnePlus Nord 2 5G] chtitlou:
Maybe stupid questions, but :

- the C.01 version from oxygen updater (EU_NonEEA) is basically the same as EUEX ? Since people on IN version don't even notice any difference ?

- the C.10 update ou get from system update must then be EX_NonEEA too, even if I don't know how you can know about it ?

- we would be able to switch version from EU_NonEEA to normal EUEX as soon as we get an available OTA through oxygen updater -equal or higher version number- since people easily updated from EU to IN flawlessly ? Just to be on the safe side about... I don't know what, actually...
[OnePlus Nord 2 5G] jollran2005:
Yeah I believe you're correct, worst case scenario the rollback package from OnePlus works on both c.10 and c.09, so if you have updated to indian c.09/10 you can rollback and then update to EU c.01
[OnePlus Nord 2 5G] chtitlou:
OK, I just noticed that my wife and I don't have the same region setting looking at "My Region Version" with *#6776#. We got the phone from different suppliers, but we both have DN2103. And ad I told earlier, I could update to A12 and she still cannot.

Would it mean that there has never been any rollout for a specific region ? Just like if it has been forgotten ?
[OnePlus Nord 2 5G] jollran2005:
DN2103 is EU region, it should be the same
[OnePlus Nord 2 5G] chtitlou:
Yes, it should. But it's a bit more complicated, since there is EUEX (for EEA countries) with no leak of ROM or OTA available anywhere, and EU_NonEEA (or GLO for global, if you prefer, for non-EEA European countries) whose full ROM is available in oxygen updater (C.01).

My region is XNE (and I got the update), for my wife it's XEU. Both DN2103, both EU version, but different regions it seems.
[OnePlus Nord 2 5G] jollran2005:
Oh alright, I wasn't aware, thanks
[OnePlus Nord 2 5G] jis251:
HI. I am on C.10 and my region version is XEU (EXU0000) so it seems there is something else that is preventing your wife's phone update.
[OnePlus Nord 2 5G] chtitlou:
The mystery deepens... I thought I had something.
[OnePlus Nord 2 5G] pankspoo:
U r insane 😂😂😂
[OnePlus Nord 2 5G] chytrypch:
Masz Polski język ?😜

Mod translation: Do you have Polish language?
[OnePlus Nord 2 5G] Wuzimu:
Jasne 😉

Mod translation: Clearly.
[OnePlus Nord 2 5G] BusterCZ:
Just recieved an oficial EU update (Czech Republic).. finally... It doesnt specify what build it is though so i will report after installing.
[OnePlus Nord 2 5G] BusterCZ:
Okay just finished installing. It is a C10 build. I have to say I am loving the new smooth animations and so on. Though a bit disapointed that the quick settings were not changed much from oxygen os 11.
[OnePlus Nord 2 5G] chtitlou:
DN2103_11_C.10 is finally available on oxygen updater. And also on my wife's phone on system update.

That was endless...
[OnePlus Nord 2 5G] roldev:
Just saw it. Any way to install it, keeping BROM mode and fastbootd? Any rev-eng way to keep them?
[OnePlus Nord 2 5G] jollran2005:
Can I update from c.09 India to c.10 EU now?
[OnePlus Nord 2 5G] chtitlou:
Why not ?

Many people upgraded from A.21 EU to C.09 IN directly without data loss. You should give it a try from C.09 IN to C.10 EU. As long as the security patch gets higher, you won't be stuck.

It seems that all of those ROMs look the same, with no specific features or restrictions. As long as you can update either through system update or oxygen updater, I won't see any risk. I have no example of people loosing data while upgrading, but only by downgrading.
[OnePlus Nord 2 5G] jollran2005:
So I can't brick my phone or anything?
[OnePlus Nord 2 5G] chtitlou:
I won't say I'm 100% sure, since I didn't do it myself...

Either you try by yourself (and I would say that there is 99.9% chance that everything goes fine) or you wait for another guy to do it first and give you the green light.

Anyway, as long as you just follow the OP rules (system update or local update), I can't see any major risk. If something is wrong, you won't go through the update anyway, just like people coming from A.21 who could not update to C.01 (silly security issue). So either you upgrade, or the system prevents you to do so.

My opinion... Your decision !
[OnePlus Nord 2 5G] greg10:
i think c.09 and c.10 have the same security patch, so it's not sure that you can update directly. but no data loss for sure
[OnePlus Nord 2 5G] chtitlou:
🤔 People can update from C.09 to C.10 with OTA update... Why not with full ROM ?

I guess that security patch has to be equal or higher.

Not lower indeed, just like A.21-> C.01 (huge mistake btw...).
[OnePlus Nord 2 5G] Prospectoras:
Oh damn and i just update my phone from A11 Eu to A12 India C10. Can I just update again from A12 India C10 to A12 EU C10? Using oxygen updater.
[OnePlus Nord 2 5G] muppetz:
Same as me . I don't mind I'm on Indian C10 but I feel I must get although EU C.10 but Oxygen Updater knows I'm on C.10 Indian so it can't show me any update , now , EU nor India . Maybe for further updates , I skip the Indian and expect for EU trough Oxygen Updater but now it can't be done .

Maybe someone will upload the C.10 EU firmware
[OnePlus Nord 2 5G] chtitlou:
If you switch oxygen updater to advanced mode in settings, select the full ROM update channel and select the correct region (EU), you should be able to download it.
[OnePlus Nord 2 5G] Wuzimu:
Yes, it is possible to download ROM, but if you will try to install as local update it is not possible. Verification is unsuccessful, I tried yesterday.

Maybe next updates for EU will be possible to flash.
[OnePlus Nord 2 5G] jollran2005:
Were you on c.09 or c.10?
[OnePlus Nord 2 5G] Wuzimu:
I updated A21 EU to c09 in, next via OTA to C10.
[OnePlus Nord 2 5G] jollran2005:
And it didn't work?
[OnePlus Nord 2 5G] Wuzimu:
Yes, I can't switch back to eu C10 because rom verification failed.
[OnePlus Nord 2 5G] kachimasu:
I received the A12 update yesterday and it's working smoothly so far, no issues.
[OnePlus Nord 2 5G] greg10:
probably it's possible to switch to EU after downgrading to IN A.20 (and losing all data) and installing EU C.10 from oxygen updater
[OnePlus Nord 2 5G] chtitlou:
You're right... I cannot even flash C.10 EU over C.10 EU...
[OnePlus Nord 2 5G] jollran2005:
Same
[OnePlus Nord 2 5G] greg10:
Succefully switched to EU C.10 from IN C.10 with rollback IN A.20 package and installing EU C.10 (downloaded from oxygen updater).
[OnePlus Nord 2 5G] jollran2005:
Awesome, I'll wait for further updates as I dont want to format data
[OnePlus Nord 2 5G] manchester98:
how to make a rollback , or where can i find the rollback file ?
[OnePlus Nord 2 5G] greg10:
OnePlus Community

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[OnePlus Nord 2 5G] manchester98:
i am on indian c09 , downloaded and renamed the rollback file but i canot click on local install option :( any solution
[OnePlus Nord 2 5G] Wuzimu:
You have to enable developer options, click 7x on compilation number, then local update will be available again.
[OnePlus Nord 2 5G] jollran2005:
The local install option is greyed out for me aswell. Boot into recovery mode and use local install option from there
[OnePlus Nord 2 5G] Wuzimu:
Do you have local update option on settings -> system update?
[OnePlus Nord 2 5G] manchester98:
done ,but nothing changed still no option
[OnePlus Nord 2 5G] jollran2005:
No, I did at first but suddenly it was greyed out. I think it was because I downloaded c.10 from system settings without installing.
[OnePlus Nord 2 5G] manchester98:
in recovery mode i have only : format data ,reboot, power off options :/
[OnePlus Nord 2 5G] jollran2005:
This is quoted from oxygen updater: "If the system's built-in “Local install” feature doesn't work for whatever reason, or if you're on global/NA firmware, you'll need to use OnePlus' separate app. Choose any, they're all developed & provided by OnePlus:

• https://oxygenos.oneplus.net/OPLocalUpdate_For_Android.apk

• https://oxygenos.oneplus.net/OPLocalUpdate_For_Android12.apk

• https://oxygenos.oneplus.net/OnePlus_tools.apk

• https://oxygenos.oneplus.net/English_20220225101104.apk

• https://oxygenos.oneplus.net/outputbTGjgm62UO_20220218143830.apk"

If the apps have a .zip/.jar extension, simply remove the extension from the name and install!