yashsingh1/xdaforums huggingface dataset:
[Redmi K20 / Xiaomi Mi 9T Questions & Answers] Antyhaker:
Apparently still too short;) Unofficial versions often have much better support.

Wysłane z mojego Mi 9T przy użyciu Tapatalka
[Redmi K20 / Xiaomi Mi 9T Questions & Answers] Pupet_Master:
They do, but he asked the downside ;)

The only one i can think is that if who compile/maintain move on the ROM become "abandonware".

but i agree, unofficial is better.
[Redmi K20 / Xiaomi Mi 9T Questions & Answers] fubugang:
Running official havocos 2.9 at the moment, seems pretty good
[Touch Diamond, MDA Compact IV General] maxermaxer:
Guys, I have heard a *rumor* that there will be a bigger capacity battery for Diamond, is this something *true*?

And I am wondering if the bettery life will be shortened by always connecting it to the PC. I actually connect my Diamond with notebook for most of the time I am in the office. Dont know if this will do harm to the battery.

Any comments are welcomed! :confused:
[Touch Diamond, MDA Compact IV General] Dark Fire:
There is a bigger battery available as an extra I think - that's probably what you've heard about. It requires a different back part for the phone though.

The Touch Diamond will charge off any computer it is connected to, so that will be good for its battery and bad for the computers battery if you're running off that.
[Touch Diamond, MDA Compact IV General] Darrenives:
I believe (so I've heard) that the extended battery will be a 1350 mAh one sold with a new back to take it.

Seems confirmed by the HTC Europe Accessories site itself.....

http://www.htcaccessorystore.com/uk/p_htc_item.aspx?i=168379
[Touch Diamond, MDA Compact IV General] xzces:
Yes there will be an optional larger cap battery. Don't know what size though. It does require a larger back cover (think you will get it with the battery).

If it is a 1350 then there's a possibility that it's the touch Pro's standard battery. But that's just speculation.
[OnePlus 7T Pro (Regular & McLaren) Q & A] fritzcola:
Hey guys, following problem. I rooted my device succesfully and installed some magisk module. But by accident i installed a module i knew will push device in bootloop if i reboot. When i reboot i stuck in a bootloop, but when i boot the original boot image i am able to boot up succesfully, do you guys have any idea how i can uninstall the module (we dont have any twrp) or how i can use the stock boot image even after reboot? Thx in advance
[OnePlus 7T Pro (Regular & McLaren) Q & A] HolyChickenGuy:
Only option I found to work without twrp is a factory reset from settings while booted on a unpatched bootimage
[OnePlus 7T Pro (Regular & McLaren) Q & A] fritzcola:
UPDATE: i used "fastboot flash boot boot.img" and now it stays unrooted even after reboot. But if i want to re-root i gues i have to wait till twrp is released...
[OnePlus 7T Questions & Answers] Udzi:
Does anyone know how to get the old vertical recents? With OOS Pie you just had to freeze the OnePlus Launcher and use Nova (or any other launcher) to get them back.

Now with Android 10 if the OnePlus Launcher is frozen the recents don't even appear
[Android Q&A, Help & Troubleshooting] daezan:
So i wanna root my phone with magisk, i have the boot.img prepared. But i cant unlock the bootloader. fastboot oem unlock and fastboot flashing unlock does not work.

fastboot flashing unlock
...
FAILED (remote: Not implemet.)
finished. total time: 0.004s

Please help, im desperate.
[Android Q&A, Help & Troubleshooting] daezan:
bump
[Android Q&A, Help & Troubleshooting] Marc530:
I have the same issue.
[Android Q&A, Help & Troubleshooting] tonik30:
I have the same issue impossible to unlock the bootoader on this device and i am not a newbie !

On android 9, device branded orange neva play, 2gb and 32 gb ,Unisoc SC9863A , usb debug on and oem unlock on, all commands not work, i try with your phone tool , the same issue. Nothing on google that can work with this device, seems to be a specific command for this device,
[ASUS ROG Phone II Questions & Answers] neo385:
Hello Community,

I play Asphalt 9 on this phone, but I'm unable to get any vibrations coming from any of it's motors. When I enable Air Triggers I do get vibrations from the triggers but not on screen vibrations as they are on OnePlus 7 Pro, I think they should be better. But why it ain't working, anyone please reply. Thank you.
[Samsung Galaxy A80 Questions & Answers] Changis:
Could anyone with an A80 and external keyboard please try this to enter settings from keyboard only:

0) [ESC] & ([WIN]+[Enter] to make sure to be on home

1) [WIN]+[Q] "quicklaunch buttons" pulldown menu appears

2) [TAB] (no change)

3) [Down arrow] (magnifying glass gets highlighted)

4) [Right arrow] X2 (gear is highlighted)

5) [Enter] should now be in settings

If this works, could you please count how many times you press down and enter to enter accessability settings and enable talkback, which should make navigating to usb settings etc much easier
[Samsung Galaxy A80 Questions & Answers] Changis:
Mods: please delete thi post.. its a A8 2018 mot A80, sorry about that
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
Hello everyone This is Splash Screen Collection for Xiaomi Mi 9T / Redmi K20

[IMG="mi 9t / k20 splash screen"]https://dl.xda-developers.com/4/8/5/0/5/0/3/Poster.jpg?key=PYsY6-YtGrH3jc8FbA31jQ&ts=1571604225[/IMG]

Please be careful this is not a boot animation

*This replace the screen of *Mi logo* when you boot up your mobile phone

*Replace the first image only (at least until now)

Download and install:

- TWRP

Just flash the file via TWRP

- Fastboot

Extract logo.img from the Zip file then Flash it with: "fastboot flash logo logo.img"

Download Here

- Revert to the original:

bootsplash-orginal

Flash it in TWRP

WORKING FINE ON MI 9T Pro / Redmi K20 Pro !

i hope you like it

New Telegram Channel

https://t.me/k20pro_Splashscreen
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] Portakalimsi:
Very nice, thanks...
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] drago10029:
would it be easy for me to make my own? what files would I replace?
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] Enino:
I like it

Gửi từ Redmi K20 của tôi bằng cách sử dụng Tapatalk
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] smokerman:
stock MI 9T bootsplash?:confused:
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
It's in the same post!!
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] FuXiN:
Tanxs [emoji4]

Redmi K20 cihazımdan Tapatalk kullanılarak gönderildi
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
New one!

check this out :)
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] Enino:
Zip flash twrp bro?

Gửi từ Mi 9T của tôi bằng cách sử dụng Tapatalk
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] birugeitu1:
thx
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] Rishi2906:
Cool, wanted to ask if you could make 2 splashes for me, provided I give you the logo and logo_unlocked images?
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
No problem I'll do it when i have time
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] Rishi2906:
Here. Use the same image for logo and logo_unlocked in each splash. A dark and a light splash. Thanks!
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] BrianWuTwKh:
Oops, the download link seems to be dead
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
It's working now
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
New one is here (Number 10)

[IMG="9t splash screen"]https://dl.xda-developers.com/4/9/1/7/6/9/1/10M.jpg?key=3vZqrtQ5LMI683hUWfLGvg&ts=1578129465[/IMG]

Download from the download folder
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
[IMG="k20 splashscreen"]https://dl.xda-developers.com/4/9/1/7/6/9/5/11M.jpg?key=hSnXMXvJbgTou1hTOxGXyQ&ts=1578129990[/IMG]

[IMG="Mi 9t Google"]https://dl.xda-developers.com/4/9/1/7/6/9/7/12M.jpg?key=7rSDNtz6_iaPpt9xDTDZLw&ts=1578129959[/IMG]
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] monstergul:
Thanks for your work
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] coffzor:
For anyone interested in having the splashscreen as the bootlogo, you can "corrupt" the stock bootanimation by replacing it with a random one that isn't stock.

Flash Splashlogo

Replace bootanimation.zip in "system/media"

Reboot

???

Profit. You now have you splashscreen as a "bootanimation", just sad you can't have a real animated picture though.
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
New one is here

[IMG="https://dl.xda-cdn.com/4/9/7/8/7/1/9/13.jpg?key=hzVy-o8YyUgegQy0aSHbqg&ts=1585146705"]https://dl.xda-cdn.com/4/9/7/8/7/1/9/13.jpg?key=hzVy-o8YyUgegQy0aSHbqg&ts=1585146705[/IMG]
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] Louis1977:
you can make like this?
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
I already made the picture you sent

check it in the Download folder
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
[IMG="14"]https://dl.xda-cdn.com/4/9/8/4/3/1/7/14.jpg?key=9BvrEm37XK4P47KstkyIOA&ts=1585823808[/IMG]

[IMG="15"]https://dl.xda-cdn.com/4/9/8/4/3/1/9/15.jpg?key=GwG03GmWTLuOqbCHnfAN1g&ts=1585823941[/IMG]

[IMG="16"]https://dl.xda-cdn.com/4/9/8/4/3/2/1/16.jpg?key=8oTtKlFK4CbmRx5lg7Lo7w&ts=1585823963[/IMG]

[IMG="17"]https://dl.xda-cdn.com/4/9/8/4/3/2/3/17.jpg?key=JCGQUIJl7Pj-Rcd-yssc6g&ts=1585823975[/IMG]
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
[IMG="18"]https://dl.xda-cdn.com/4/9/8/4/3/2/5/18.jpg?key=kMuVWtxlJb4-qjgCpDYn1w&ts=1585824196[/IMG]

[IMG="19"]https://dl.xda-cdn.com/4/9/8/4/3/2/7/19.jpg?key=kkqCW3qyRbIocMqWOkkBhw&ts=1585824130[/IMG]

[IMG="20"]https://dl.xda-cdn.com/4/9/8/4/3/2/9/20.jpg?key=peHvz_wu2wOiLVcgB26STg&ts=1585824144[/IMG]

[IMG="21"]https://dl.xda-cdn.com/4/9/8/4/3/3/1/21.jpg?key=7SBnV_hby0FaQzT7u4M0LA&ts=1585824159[/IMG]
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
[IMG="22"]https://dl.xda-cdn.com/4/9/8/4/3/3/3/22.jpg?key=EOu_u83MzMxYNbs9sU4VPQ&ts=1585824403[/IMG]

[IMG="23"]https://dl.xda-cdn.com/4/9/8/4/3/3/5/23.jpg?key=t_JY76GobZ5lTBVCitR-VA&ts=1585824347[/IMG]

[IMG="24"]https://dl.xda-cdn.com/4/9/8/4/3/3/7/24.jpg?key=JovLtSdogd2QGqmM75e8Rg&ts=1585824371[/IMG]
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] Niyolpaki:
thank you very much awesome work ^^
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
New Telegram Channel

https://t.me/k20pro_Splashscreen
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] Necrodaemon:
Is possible make a splashscreen stock without "unlock" text for MI9T

Thanks
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] titou4488:
hello, i look for pic2 and pic4 to made my own splashscreen. I don't know how to extract the original logo.img. i created my logo and it works however i set my logo in all 4 pictures...

Sorry for my bad english.
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
Check the new splash screen in the telegram channel
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
New on Telegram
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] Necrodaemon:
Thanks for your work

Is possible add stock Redmi K20 without text "unclocked" or add "*.BMP 24bits" to make logo.img with script (PY)
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] nikc0069:
Assume it doesn't matter what rom I'm on?
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
Any rom
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
Changes

Starting from No.45 On Telegram

- New Fastboot screen

- New System error screen
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
New screens:

[IMG="https://dl.xda-cdn.com/5/0/0/3/6/3/3/Fastboot.jpg?key=tSz7dcQkx_7aAdzn2dI6xA&ts=1587815702"]https://dl.xda-cdn.com/5/0/0/3/6/3/3/Fastboot.jpg?key=tSz7dcQkx_7aAdzn2dI6xA&ts=1587815702[/IMG] [IMG="https://dl.xda-cdn.com/5/0/0/3/6/3/5/System-error.jpg?key=YW_sXZMshU_ll2kbr-w2TA&ts=1587815734"]https://dl.xda-cdn.com/5/0/0/3/6/3/5/System-error.jpg?key=YW_sXZMshU_ll2kbr-w2TA&ts=1587815734[/IMG]
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] Portakalimsi:
Are you serious?

This is great!

I'm waiting for you to share, man.
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] TheUltimateOne:
You're welcome
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] heinhuiz:
I would appreciate this too, also without the padlock icon.
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] KimRaFi:
Not working on mi9t
[Redmi K20 / Xiaomi Mi 9T Themes, Apps, and Mods] farzadkf:
dude can you make one for me with this pic?
[OnePlus 7 Pro Questions & Answers] eglesiaw:
Anyone seeing some screen or lines on the screen flickering since Android 10? Happened three times in two days to me.
[OnePlus 7 Pro Questions & Answers] hallo dare:
Sometimes I get it on the top and bottom of the screen when scrolling in chrome. Haven't found a fix and no other apk suffering
[LG G8 Guides, News, & Discussion] antintin:
I've been starting to get this problem recently where even if I stood directly next to my router the phone would just disconnect from the wifi at some point. Had this on my old iphone se too but not on my computer so idk how it could be related. Anyone else been getting disconnected from the wifi a lot?
[LG G8 Guides, News, & Discussion] divineBliss:
It could be a issue caused by the router. See if this happens when your phone is connected to other routers.

When this happens again, turn your router off and back on and see if there's any improvement in the situation.
[HTC Tornado] charnder10:
Hey guys Im amazed at what people can do with this phone i have an imate sp5 with one of the cooked roms and its amazing.Anyways the purpose of this thread is i would like to help out with hosting of the Tornado Roms I have more than enough space so if there is anyone interested send me an email sean.ncube@gmail.com or sean@maddflavaproductions.com and dont worry guys its free and there is no bandwith limit and the speed is very fast so once again if there is anyone interested let me know i have created and ftp account already
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Pupet_Master:
After flash or format, some times our device has a NASTY bug on the PopUp Camera, where it keep opening and closing forcing the actuator motor and never re calibrate successfully. Making a bunch of error messages on the OS plus a useless front camera as it wont work.

After doing research, i found out that this problem happen if/when the Persist partition get corrupted. In fact, it's not even the motor and PopUp camera that is broken, but the other sensors that the camera depends to work fine (such as proximity sensor, gyroscope, etc) hence, the phone OS think the camera isn't opening.

To fix, all we need to do is flash a new Persist.img on the Persist Partition via TWRP (no wipe or format need).

1 - Download the latest Official FASTBOOT Stable ROM (even if it's pie, it will still work on a Q based ROM, i tested this) at: https://xiaomifirmwareupdater.com/archive/miui/davinci/ (i got the V10.3.15.0.PFJEUXM or V10.3.11.0.PFJMIXM for my device).

2 - Save it in to your Desktop PC

3 - With 7zip installed on Windows, open the ROM file that you download from the inside

4 - Once you find a folder, explore it untill you find a images folder where a file called Persist.img exist

5 - Extract ONLY the Persist.img and transfer it in to your phone Internal Storage

6 - Make a FULL nanodroid backup once you reboot in to TWRP

7 - In TWRP after the backup, choose the Install Button and then Image Install

8 - Pick the Persist.img and choose to install it in to the Persist Partition

9 - Flash and Reboot

10 - Profit.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Meridian Explorer:
Please do note that following this guide will cause the user to permanently lose Widevine L1 in the process.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Keylaani:
The same thing happened to me when I returned from pixel experience to stock but my problem is that the sensors such as the gyroscope work slow for me, in videos and 360 images it looks lagged, only in the rom xiaomi.eu all the sensors work well, I have to flash persist.img in stock?
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Pupet_Master:
Yes, the problem is these sensors, not the camera it self.

As people report, flash this will make you loose the L1 DRM that Netflix uses..

I personally don't care and i rather fix these than have L1

So if you find no fix.. yes you must flash, but try to fix it in different ways.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] macakfelix:
wrong

Totaly wrong

After that camera will open and close until you start camera app and recalibrate with ap
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Pupet_Master:
Read again, it WONT re-calibrate as the SENSOR (not camera or motor) wont read that the camera got open.

If for you it WILL re-calibrate then you don't have the persist partition problem.

You think i didn't re open the camera app and tried to calibrate again?
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] macakfelix:
I have persist problem (you storage is damaged,, no wifi, etc) i fix everything

But after flashing, front camera open and close.

I write my solution
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Pupet_Master:
For me, storage wasn't damaged nor wifi, only gyroscope
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] mufyto:
Was your camera not closed at all? It takes open 2 milimeters?
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Pupet_Master:
It open and close, as the sensor didn't "feel" it was open.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] mufyto:
Ok, different issue than mine, that is not closed by 2 milimeters. I'm going to change the phone.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] hulyahulya:
hello. do you know something about this . My phone mi9t back camera stopped work . . İ tried 3 diffirent rom problem not fixed. . i format disk with twrp and install new rom still not fixed. thats mean hardware problem ? But sometimes middle camera work another two not work.. maybe cable unplug ?

---------- Post added at 01:41 AM ---------- Previous post was at 01:07 AM ----------

i fix problem. if anyone have this problem . thats mean persist files broken. they need to restore persist.ext4.win backup with twrp
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Pupet_Master:
This look like a hardware problem, as the issue i had was with it popping up and never reconizing it did
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] hulyahulya:
maybe is it possible camera unlug inside phone ? there 2 camera on same cable and another camera on another cable . it cant unlug same time. front camera working fine . its difficult understand hardware or software problem
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Pupet_Master:
It is possible it's just a driver issue, that the camera unplug it self (but very unlikely). I would bet on the actuator motor being dead
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] malok:
mi 9t pop up camera problem, Rollback from MIUI 11 to MIUI 10

Hello to all.

I have a mi 9t and the pop up camera doesn't work. When I am using the app and trying to take a selfie it gives me an error camera can't open and after many tries it give an error ''couldn't calibrate''. The problem started after update the phone to miui 11 (android 10). Before the update when on the phone was the miui 10 (android 9) the pop up camera was working without problems. Also have other problems when the phone updated to miui 11 such as heating... May I rollback the phone from miui 11 to miui 10 using MI Flash under locked bootloader .. My phone has ARB=1 and the version of miui 10 has ARB=0.

My phone has a version MIUI 11.0.4.0 (QFJEUXM) and I want to flash of MIUI 10.3.10.0 (PFJEUXM)

Is it possible to roolback from MIUI 11 to MIUI 10 under locked bootloader?

Please I am asking your solution. Thanks in advanced :)
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] akshay07057:
Hey can anyone help me.

I have same problem but I never flashed any rom, TWRP or rooting on my phone. I replaced my camera module but it didn't solved my problem. Can this solution will help me. Im on MIUI 12 facing this problem from last 4 months.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] joseph 007:
Someone pls help!!!

Sir ,. I'm a newbie to this presist issue and all , I did have an old zuk z2 which was pretty straightforward and which was user friendly in flashing . Coming to k20 I still regret flashing roms on this as it turned out to be disaster everything including the anti roll back , this pop bug etc...?

Coming to the topic ?

2 days back I bricked my device really hard as I was not having a computer I manually wrote some scripts randomly and accidently while deleting partitions I deleted persist , then I realised it flashed it via terminal again.

Afterwards I had to force flash firmware as my device ID was all messed up , managed to boot in miui 12.0.3 indian stable version for the first few hours then due to the hype of the situation I flashed PA quartz 4 & i was happy with what I had but then I realised most of my sensors where screwed up except for the fod

Inorder to regain what I lost i extracted persist and flashed it via orange fox then I regained all sensors back but sadly broke my front camera as recaliberation never takes place in reality on pa quartz 4 I don't know the reason for that though.

Now I'm left with two persist backup which I can flash to use whatever I want in need.

SO MY DOUBT

If I do flash the persist.img to persist partition via TWRP when I have pure stock rom installed via fastboot does the front camera calibration work on the same ?? Did it fixed the issue ?? Please confirm ..

Thanks in advance ?

---------- Post added at 09:06 AM ---------- Previous post was at 08:57 AM ----------

Brother did try flashing persist via twrp on stock rom if you did it then please tell me I guess if the content stated in thread by the op is true then it should really fix the issue , I'm now left with partially working everything in my phone with 2 persist image files one with cameras working with no sensors another with everything working except for cameras

And by the way it's not an hardware issue it's a software issue so if you didn't flash anything or tamper your phone anyways just replace the device if you are under warranty

---------- Post added at 09:09 AM ---------- Previous post was at 09:06 AM ----------

It is not really possible to do it via locked bootloader unless you bypass it via edl mode
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Pupet_Master:
Flash the persist image, for me did indeed fix the issue. How ever if you watch netflix you wont be able to keep doing so as you will lose DRM.

You can do it with what ever ROM you wish to use, Stock, Stock modded, Custom.
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] GabiML:
If you want to calibrate, unlock bootloader and install ArrowsOs 11. In settings there is an option at camera named Calibrate Camera. It fixed every problem
[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] joseph 007:
AS PER MY EXPERIENCE

That means your persist file is good and safe . If it was corrupted it mostly won't calibrate itself especially on custom rom , I tired it myself on PA quartz 4 .

( I don't know about other roms ) .

via flashing persist.img but even after pressing the calibration as said by OP.

The calibration never took place. Thus the one and only correct method is by flashing persist.img to persist partition on while running a stock rom in my case it was a tarp nandroid backup I kept prepared long back and calliberation did work this time.