yashsingh1/xdaforums huggingface dataset:
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] treebaard:
To add to original problem description: I'm also sometimes getting app hangs which last from 10 seconds to a minute or two. These happen most often if I switch between apps, or when in a game I switch to a subgame with heavier load. Seems to me it may be related to the CPU manager, though it could also be a ram issue (allocation increase not working right or something.)
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] wikican:
google maps don't sense moving. Staying in the first location, I did everything, uninstall, close, open but, When I move it still waiting in the first position!
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] treebaard:
That usually has to do with old firmware. Try flashing firmware and vendor blobs
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] nbmx:
Hi all

Who know when LineageOS 19 will release?

Thanks
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] Vega56:
Source:

https://www.reddit.com/r/LineageOS/comments/q1khwp
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] nbmx:
Thanks 😉
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] eagleboi:
I'm also expiriencing the issues with apps freezing and crashing. Did a full data wipe but it didn't help. Really frustrating 😤
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] treebaard:
@gardiol
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
Not clear what you are asking.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
Updated safetynet guide, see post 3.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] robogo1982:
Which build? I have the 7 Feb and experienced no such issues. Try flashing a different A11 ROM, if it keeps happening, it's something else.

In your place I'd flash a full MIUI fastboot ROM and then reinstall Lineage.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] universe3:
I flashed the MIUI fastoboot ROM and then installed the latest official LOS, but it still crashes apps in the background more often than my Mi A2 which was released 3 years ago.

I've never had this problem with any other custom ROM.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] eagleboi:
I have the build from the 31st of January. I also flashed a clean MIUI rom earlier, then went Lineage and then updated using the updater with TWRP. It still occurs after a few days of usage. As the other people said, a restart helps but if the device is running for a few days it has a 100% chance for the freezes to come back.

I also removed Magisk and all the modules to check if it could be causing some interference but that didn't help either.

I'll switch to another ROM maybe at the end of the month to see if this occurs on another A11 ROM, but I didn't see it on MIUI during a few days of tests.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
Hard to pinpoint the problem. It does not happen on any of my three POCO X3 NFC.

You should gather logs and send to me when the crash occurs so i can check it out.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] _exian_:
I dont understand why "official" devs are not merging these patches yet
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
They actually did, and broke boot for many other devices, so they reverted.

Sorry guys, just keep usb debug active on official builds.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] Vavun:
Hello and sorry for my bad English.

If I understand correctly, those two commits affect only single library and a small change in selinux. Could you please just build this library and selinux commit in update.zip for surya users only? adbconnection_client hasn't been changed for years, I don't think it could break something.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] sturges:
Just wanted to say thanks @gardiol for making LOS for surya possible. During these months my phone has been working perfectly stable and with good battery.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
Thank you!
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] uriel cruzitho:
Thanks dev

Im in the latest build 0307 and the 2.4 ghz wifi is not conecting correctly only 5ghz

Sorry bad english
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] Spooderman46:
This is terrible advice. Followed exactly, flashed GAPPS after doing initial setup and it just causes all kinds of problems with permissions and that kind of thing. My location services straight up wouldn't work because I could not give the right permissions to Google. Magisk and others don't matter so much. just dont do GAPPS after initial setup.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
Try update to Global firmware 12.5.4.0
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] paradøx:
Or you can use MindTheGapps instead of Gapps and permissions will be ok.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
He is actually right. Also Mind The Gapps will have issues if not flashed immediately. OpenGAPPS are _NOT_ recomended anyways, so please use Mind The Gapps with LOS. Yeah, it seems to be "old" build, but all apps will update via play store anyways, so it doesn't matter.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] Spooderman46:
Apologies, I should have been more clear. I was using Mind The Gapps, the recommended package. I just wanted to point out that if you follow the steps exactly, and install MindTheGapps after setup, as suggested, it can cause issues. Just wanting to help make the post clear and beginner friendly, not everyone might be able to work out the problem.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
I updated the post.

This has been known for some time, but XDA nowadays is always updated after some time, so sad but...
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] Spooderman46:
Awesome thank you! Love the ROM, definitely the most stable I've tried so far, keep up the good work.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] Fatalemperor:
I have tried Los one of the earlier builds actually I didn't like it back then because of the SOT how is the SOT on the current build?
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] Classic Nero:
please, can you update los 17 ?
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] LOLcorpse:
Wipe and Format data before or after ROM install any difference?
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] LOLcorpse:
Should i install gapps and magisk with every new build of rom in twrp?
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] robogo1982:
If you do an OTA update, you don't need to install anything if you already have GApss and Magisk. OTA updates the system and everything else works fine. It even keeps my MagiskHideProps settings, Magisk AND root intact.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] wonder_user:
Hi. any help would be appreciated. I use dual SIM and I can't use mobile data during calls. Please help.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] x3r0.13urn:
I think it's quite normal for data to be disabled when you're on call. You can still use wifi for data though.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
It's pointless. There are no more upstream updates for that, so making new builds is... meaningless. No i will not do any more builds of 17.1.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
turn on USB debug and SOT will just be great.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] _exian_:
I dont know why but I cant finish install when flashing any versions of MindTheGapps-11.0.0-arm64 right after LOS (either official or unofficial). LOS logo just runs at boot and then reboots in twrp. I had to resort to opengapps... weird...
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] universe3:
For several months now, I have been experiencing a problem where my phone randomly crashes the system and stops working when I use my Bluetooth earphones (Anker Soundcore Life P2) while connected.

Pressing and holding the power button and restarting the phone temporarily resolves the issue, but it soon reoccurs.

This problem did not occur with the Stock ROM or any other custom ROM.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] TipX:
@gardiol thnx for maintaining official LOS, it's a great smooth and stable ROM. I have only one problem; i live in The Netherlands and use Youfone as my 4G provider and they are using the KPN network. But if i want tot use vowifi it doesn't recognize caller id from my contact list. Is there a solution for this?
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
Logs are always the way to go.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
Never used wowifi, maybe some other user can report his/her experience?
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] TipX:
I'm sorry, my translation was wrong, i'm referring to VOLTE 🤭
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
No VoLTE icon in LOS, only 4G icon which means VoLTE, which actually works just fine.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] TipX:
If i enable '4G calling' i don't get caller ID with incoming calls.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] paradøx:
Just saw a 19.1-unofficial release at gardiol.org :D

I'm happy with 18.1 but nice to see development is progressing
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
Correct! Its based on the official Los trees, but since upstream has not released yet, from official only 18.1 can be built as of now. I will provide monthly updates of 19.1 waiting for upstream release.

Those builds are based.on the already existing official trees on lineage github.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] Shknz:
can you put the link to rom 19.1 please?
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
Same locations as all my test builds.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] Shknz:
Thanks, I'll try it!
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
Be warned that los 19.1 is still missing many features you might be used to in 18.1.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] alucard_tthu:
I have exactly the same issue. Workaround is to disable VoLTE (4G Calling) to get Caller ID to work. Otherwise all incoming calls will list as 'unknown'.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] robogo1982:
gardiol, is this the end of 18.1? :)

Also, full wipe necessary for 19.1?
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
Yes, there will be no more official 18.1 builds, just 19.1 from now on. In the next weeks, Dirac will be added back and base files will be bumped to 12.5.7 firmware (still 12.5.4 minimum required).

17.1 is dead since dec'21 as you know, 18.1 still kicking but 19.1 is the new baby.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
First post updated
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] FightThe war:
Thanks for the new version 19 !
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] Henmas:
I cant find anywhere whats new with LOS 19 and I am content with 18, is there any real reason to bother with updating?
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] robogo1982:
I bit the bullet and updated this morning.

Performance is excellent, no issues whatsoever. Battery life is too early to tell, but I don't expect any problems. Bluetooth works fine, NFC too (from what I can tell). No recovery that can decrypt partitions yet, so keep that in mind.

Right now, the only issue I have is the very unreliable fingerprint sensor compared to Lineage 18. The phone doesn't vibrate if it didn't pick up the fingerprint, but also has problems with scanning generally (1 out of 5 attempts are successful).
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] olm_:
I did the upgrade this morning. I had to full wipe the data partition to successfully boot on the new rom.

All features works fine for me (but I'm not using VoLTE), Magisk + SafetyNet is ok with my usual setup, no issue with fingerprint sensor on my side. However I got two crashes (need to force reboot after a freeze when using the Keepass2Android app, not sure what happened yet).
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] treebaard:
I also got a few freezes and 1 OS crash, mostly early on after first boot.

Is it me or is max brightness lower than it was in 18.1?
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] clonato:
Hi

i did a dirty flash from your latest lineage-19.1-20220428-UNOFFICIAL-surya-release but after i unlock it, it return to lockscreen. all the time. i re-flashed previously version and all is ok.

edit: I have removed security access (password+fingerprint). update but phone get bootloop "lineage logo - phone on starting - lineage logo - phone is starting........"
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] payas0:
I am thinking of upgrading too but I also rely on KeePass. Can you try if KeePassDX works better than Keepass2Android?
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] robogo1982:
Copy/paste of the instructions in the first post:

Instructions:

Make sure to flash at the very minimum firmware 12.5.4.0 (anything newer will work) from XiaomiFirmwareUpdater firmware page

(For 17.1 <<only>> : flash VENDOR + FIRMWARE from Android 10, do not use Android 11)

Download this build and Magisk (optionally) and gapps (optionally).

Put the zip on your MicroSD (suggested) or connect via USB to PC.

Boot to recovery (latest TWRP only is suggested! OrangeFox has issues).

Wipe Dalvik, Cache and format data. This

IS NOT OPTIONAL!

Reboot recovery after wipe and format.

Flash this ROM zip...

... flash gapps zip ...

... If you want Magisk, flash zip ...

Reboot and enjoy!
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] clonato:
Hi

i hoped to do not a format.....
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] robogo1982:
Well it is what it is, but usually when updating to a whole new version of Android (11->12) it is good to wipe, sometimes even obligatory to ensure full functionality of the device.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] olm_:
I think it has more to do with a memory management issue, 99% of time Keepass2Android works just fine. I had the same kind of freeze with Firefox + youtube playing a video in "picture in picture" mode. However KeePassDX should be lighter on memory than Keepass2Android.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] clonato:
Hi

im on his lineage-19.1-20220428-UNOFFICIAL-surya-release - https://www.gardiol.org/surya/test/
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] robogo1982:
Oh! That might just work then.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] clonato:
hi

but i get that issue. i will wait gardiol for some help if he wants
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] Pumpino:
Nevermind...I figured it out.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] minax007:
@gardiol

Excellent work!

You should also change the title from:

[ROM][11] LineageOS OFFICIAL [SURYA]KARNA]​

to

[ROM][12] LineageOS OFFICIAL [SURYA]KARNA]​
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] gardiol:
Thanks done
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] Beaster:
Hello and thx for your hard work.

Just to share my experience. I was on ArrowsOS 11 for quite some time and wanted a fresh start.

I followed this guide at first

https://telegra.ph/Restore-L1-06-10

Along the years I somehow lost L1 Widevine and came across above guide. Completely erased and flashed Xiaomi eu, recovered L1 certificate then followed instructions on 1st post.

I now have a fresh Los 19.1, Gapps, rooted, Safety Net certified with L1 capabilities.

Again thx for your work 🙂
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] minax007:
Today I have updated to the MicroG-Version of LineageOS 19 on two devices and can confirm that you do not need to format data for flashing it when you upgrade from the MicroG-Version of LineageOS 18.1.

Download link:

surya

It works really fine and I haven't found any bugs so far.

Dear @gardiol

Excellent work!

Thank you very much!
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] robogo1982:
Just wondering - do I need the Lineage recovery for the coming OTAs?
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] payas0:
I just noticed that on the latest official build, the QS is always in dark mode.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] SkaboXD:
It's Google's decision. They don't see it as an issue. Which is retarded.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] payas0:
Oh, that is weird. Because when you pick a light theme you'd expect it to be significantly lighter. Haha. What was Google thinking.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] sturges:
I've heard only the lineage recovery can decrypt A12. Since I switched to los recovery I never missed that closed-source twrp anyway...
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] sturges:
Security. No more updates = no android security patches = stay away from the internet.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] pnin:
Does it do nandroid backups? Do you have Magisk?
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] sturges:
I don't need neither nandroid nor magisk, so for me los recovery is more than enough
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] sturges:
Ouch... guess I'll wait a bit before installing A12 then.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] ibrahm24:
today's official build includes "Update blobs from V12.5.7.0.RJGMIXM", maybe it fixes fingerprint sensor?
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] treebaard:
after today's autoupdate, 'enablecrypto=failed'..? @gardiol
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] clonato:
hi

today i have installed new release by OTA.

stuck on boot.

tried to installed 02 may but stuck

cannot boot anymore

any suggestions?
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] ashutoshmishra:
Device failed to boot after today's update. Had to factory reset to get OS to boot. Unsure what the problem is. I use LOS recovery.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] clonato:
ok factory reset but you are going to lost all data
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] robogo1982:
Same here, LOS recovery says it can't load my system and that I need to format data. Corrupted update maybe?

Sideloading previous version as I'm typing this.

EDIT: no go, had to hard reset-
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] Beaster:
From telegram support channel...
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] robogo1982:
Good to know that this won't be an issue in the future :D
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] treebaard:
oh, how nice to know that this will only be posted to TG.. Guess we can stop coming to xda then...
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] robogo1982:
Flash a different ROM then, I guess?

Other than the fact that people have their own lives to live outside of ROM development, Telegram IS STILL a much more convenient communications channel than XDA. XDA forums have been on a downhill slope for years now, and the latest mobile app is just a dumpster fire icing on top of a crap cake.

It's the mobile device and development forum that is super unintuitive and unfriendly towards mobile users. Why??
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] paradøx:
From TG: "As I told you Lineage 19.1 is still being heavily developed and its basically still experimental. This is proof. Last week LOS upstream added "wrappedkeys" support. This is a feature for encryption, which change the way A12 encrypt files. This caused 9May build (and all future builds) to not dirty flash. So, anybody who flashed before 9May MUST CLEAN FLASH any future Los 19 builds. Sorry guys there is no way around it. If you are on 9May build, keep it as you will be able to dirty flash in the future."
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] robogo1982:
Weird issue: GCam ports won't record audio, and the stock cam won't record video (only shows first frame of the video).
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] volkix2:
i can confirm that. without this issue the rom is my first choice.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] huluyige:
confirmed
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] paradøx:
"test build of 19.1 which should fix the video recording issue" (unofficial): https://www.gardiol.org/surya/test/
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] volkix2:
yes,now it works!
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] payas0:
I just noticed that official build 0502 (which was the first 19.1 build) was also pulled.

LineageOS Downloads

download.lineageos.org
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] sturges:
Also no more commit for 12.5.7 blobs, maybe it will be readded later?
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] _exian_:
17.1 has been supported long after 18.1 was released. . . I don't understand why support for 18.1 ended only because that the not-so-stable 19.1 is available. My reasoning for choosing LOS was that it wouldn't die and leave me without updates like many unofficial roms do. But android 12 is such a mess right now and there's no decent recovery with encryption support for surya
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] Noter2017:
Android 12.1 ist working just fine. Me and many other people are using ROMs based on that version and have no problems or complaints
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] camperbh:
Some people reported hard bricks after flashing 12.5.7 so maybe that's why.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] v44r:
I flashed the test version from gardiol trying to fix the audio recording and now I cannot boot =/. Can anyone post the 0502 version that was pulled from the servers, to test if I can flash that again an boot?
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] minax007:
I do not have the 0502 version but the LineageOS with MicroG, which is based on the 0502 version can be downloaded here:

surya

I have installed it on two devices as an upgrade to LineageOS 18.1 with MicroG and it works without any bugs.

But I am not sure if you can flash it over LineageOS without MicroG - without bricking it.

So you should only use it if you want to have a flawlessly running LineageOS 19.1 with MicroG.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] v44r:
Nope, flashing the microG version does not fix it. If these (test/microG) versions don't touch /data when trying to boot I should be able to recover by flashing the previous 0502 /system (I think, I don't understand very well these new dynamic partitions)... but my only chance is someone having the 0502 zip still in their hard disk and uploading it somewhere.

(Rant: this is why I hate when they simply remove things from servers. I understand they do it to keep users safe from a bad/dangerous build, but they could just HIDE it, or keep the zip somewhere else... it may be useful to someone!)

(edit) Found it on telegram. Didn't fix it. I have to format data. Oh well.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] minax007:
I agree.

But you should always make a backup via TWRP before flashing a new ROM.

Then you have the possiblity to recover your system in case anything goes wrong.

Furthermore I advice you to remove the "security" (fingerprint, pattern, ...) before flashing a new ROM.

Otherwise, when the data partition is locked, you will not be able to recover it.

That was the experience I have made.

Since then I am removing the "security" settings and never had a problem again when something went wrong.
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] payas0:
0516 build out now. I'll probably have to clean flash this over my 0502 build.

But if anyone tries to dorty flash 0516 over 0502, do let us know. :D
[Xiaomi Poco X3 NFC ROMs, Kernels, Recoveries, & Ot] MoiZie:
I tried to do it, through the built in updaterr. couldn't decrypt data (password incorrect) (TWRP 3.6.0_10 surya).