Popup camera stuck - Redmi K20 Pro / Xiaomi Mi 9T Pro Questions & Answe

So after flashing a few roms my sensors became corrupted I found out u need to flash persist to fix them but after I did that the popup camera started freaking out it keeps trying to close itself when it already closed it keeps telling me to calibrate it but after I do that it says could not calibrate I flashed persist through twrp. Right now I really don't know what to do can anyone help me fix this please

EI understand that persist must be flashed together with a factory reset (initial miui configuration)

Reflash your stock miui with miflash (dont lock bootloader). Boot miui up, open the camera app and it will say "calibrating camera" then it will be ok.

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HELP!! Le2 x526 Not booting Up, nor Charging

Hello Friends,
Yesterday I was chatting on whatsapp and suddenly my le2 restarts, and then a blue splash screen appears and device keeps on booting,
hence I went to recovery and clear the data, but that also didnt help me,
Then i flash the 13s rom via Flashone 1.9 then also same problem happens, sometimes it went to optimizing apps 3 of 4 and again restarts with blue LED, i were unable to switch it off,
after draining the whole battery I keep mobile to charge but now it is not charging, it only showing Red Solid LED Continuously.
Now I am also Unable to boot into recovery or fastboot mode.
I again flash the stock 13s rom via flashone 1.9 , i got success msg but then also mobile is not booting nor it is charging.
Note: I am on complete stock rom on locked bootloader, never unlocked or rooted, used as come in box.
Please give me a solution on this, I have searched everywhere but not getting any solutions.
Thanks in advance
Try to check your USB cable, most of the time charging issue is due to cable
shubham1358 said:
Try to check your USB cable, most of the time charging issue is due to cable
Click to expand...
Click to collapse
Cable is ok. I have another Le2 and it is charging with that cable very well
I am facing same problem. How you solve this issue? Blue led blinks after flashing any rom and bootloop.
xerol said:
Hello Friends,
Yesterday I was chatting on whatsapp and suddenly my le2 restarts, and then a blue splash screen appears and device keeps on booting,
hence I went to recovery and clear the data, but that also didnt help me,
Then i flash the 13s rom via Flashone 1.9 then also same problem happens, sometimes it went to optimizing apps 3 of 4 and again restarts with blue LED, i were unable to switch it off,
after draining the whole battery I keep mobile to charge but now it is not charging, it only showing Red Solid LED Continuously.
Now I am also Unable to boot into recovery or fastboot mode.
I again flash the stock 13s rom via flashone 1.9 , i got success msg but then also mobile is not booting nor it is charging.
Note: I am on complete stock rom on locked bootloader, never unlocked or rooted, used as come in box.
Please give me a solution on this, I have searched everywhere but not getting any solutions.
Thanks in advance
Click to expand...
Click to collapse
I also have the exact same problem. Phone started rebooting as soon as it booted up. Somehow i managed to unlock the bootloader, but to no avail. Can't seems to find any rom which can boot up. So practically i have a bricked device with trwp. Formatted the system and other partitions with twrp, flashed many roms. Still the result is same. Bootloops.
Hi,
try to to reimage your phone with QFIL from this site:
https://www.techpoison.in/2017/12/how-to-flash-letv-le-2-x526-stock.html
I downloaded everything from there, QFIL, Sparse image and drivers. My phone was bricked, but its working normally now. After you flash the image your phone should charge normally, just try to boot it up. In my case i had issues with baseband, not detected, no sim function and no wifi and phone was restarting each 3-4 minutes, but it was operable. Basedband issues can be solved by hard reseting the phone and updating it to 21s using the local update, just put the 21s stock renamed to update.zip to internal storage and run system update. When you get the error - APK missing, just boot it up again and retry the local update, should work fine the second time, i just deleted the update.zip and put back again and ran the update.
---------- Post added at 03:24 PM ---------- Previous post was at 03:18 PM ----------
Forthe55 said:
I also have the exact same problem. Phone started rebooting as soon as it booted up. Somehow i managed to unlock the bootloader, but to no avail. Can't seems to find any rom which can boot up. So practically i have a bricked device with trwp. Formatted the system and other partitions with twrp, flashed many roms. Still the result is same. Bootloops.
Click to expand...
Click to collapse
Flash the 21s bootloader + modem, one ZIP file, should work fine. Not sure what ROM did you install last time. You can give it a shot with with MIUI 10 - its nougat.
I had similar issues, see my topic, maybe it helps a bit.
https://forum.xda-developers.com/le-2/help/x526-bricked-unknown-baseband-4g-t3838093
Modem + bootloader 21s.
https://drive.google.com/file/d/0B_R...FxTGxlMHM/view
Brother same thing happened to me, a week ago. I cant say about your problem but my problem was due to faulty power button. Actually due to that reason my phone actually kept restarting itself. It showed red light blinking while charging and wasn't able to bypass the optimizing app screen. I also thought it was a software issue but actually it wasn't. I spent about 2 hours figuring out what the actual problem was. The problem was: As we know when power button is hard pressed for about 10-15 seconds it reboots itself.
Although the repair shop guy didn't put new power button but he added a tiny piece of paper in between the power button and body housing to prevent the issue and voila the problem was solved.
delltech1 said:
Hi,
try to to reimage your phone with QFIL from this site:
https://www.techpoison.in/2017/12/how-to-flash-letv-le-2-x526-stock.html
I downloaded everything from there, QFIL, Sparse image and drivers. My phone was bricked, but its working normally now. After you flash the image your phone should charge normally, just try to boot it up. In my case i had issues with baseband, not detected, no sim function and no wifi and phone was restarting each 3-4 minutes, but it was operable. Basedband issues can be solved by hard reseting the phone and updating it to 21s using the local update, just put the 21s stock renamed to update.zip to internal storage and run system update. When you get the error - APK missing, just boot it up again and retry the local update, should work fine the second time, i just deleted the update.zip and put back again and ran the update.
---------- Post added at 03:24 PM ---------- Previous post was at 03:18 PM ----------
Flash the 21s bootloader + modem, one ZIP file, should work fine. Not sure what ROM did you install last time. You can give it a shot with with MIUI 10 - its nougat.
I had similar issues, see my topic, maybe it helps a bit.
https://forum.xda-developers.com/le-2/help/x526-bricked-unknown-baseband-4g-t3838093
Modem + bootloader 21s.
https://drive.google.com/file/d/0B_R...FxTGxlMHM/view
Click to expand...
Click to collapse
Hi, Thanks. I actually did that first, flashing through qfil the same rom. it helped me to go to settings after umpteen attempts to go past language selection screen, and i was just able to oem unlock and enable usb debugging (actually after a 2nd partial failed flashing). the phone kept freezing within seconds of booting up. Now After i unlocked the bootloader and installing twrp and flashing many roms thru twrp, i am still having the same problem of booting up and freezing at start-up. cant flash again through qfil, as i will again loose the unlocked bootloader and twrp.
At least , now i can try different roms to see which can unbrick it. last one used was the twrp flashable rom based on eui (small eui by aurel) but it also freezes on language selection screen or beyond.
I am running out of ideas, lets see.
2nd partial failed flashing? any issues during the flash process? i had some issues when i used usb 3.0, 2.0 worked fine for me. If you have also charging issues stay in twrp and let the phone charge properly, its slower but should work fine. You can try to flash the 21s bootloader with modem, maybe it will boot properly. But try it only when you are able to enter the fastboot mode, longpress volume down and power for 10-15 seconds, if that is working you should be able to flash twrp via fastboot and you can experiment a bit. Try to find the chinesse twrp 3.0.2.0 and try to flash the stock 21s version. Should be also an image file, in standard twrp go to install - image, after selecting the image file click on recovery and install, after installation go back, reboot, recovery. Copy 21s to storage, wipe data, cache, dalvik and flash it, chinesse twrp will skip version check and will let you install the stock image, after install reboot but click on do not replace recovery button - this will keep the chinesse twrp installed.
If nothing helps it can be only a HW failure, maybe the power button, try usb 2.0 port during the flash process, i had issues with 3.0 on my pc, if that doesnt help.try a different cable, no more suggestions, sorry.
delltech1 said:
2nd partial failed flashing? any issues during the flash process? i had some issues when i used usb 3.0, 2.0 worked fine for me. If you have also charging issues stay in twrp and let the phone charge properly, its slower but should work fine. You can try to flash the 21s bootloader with modem, maybe it will boot properly. But try it only when you are able to enter the fastboot mode, longpress volume down and power for 10-15 seconds, if that is working you should be able to flash twrp via fastboot and you can experiment a bit. Try to find the chinesse twrp 3.0.2.0 and try to flash the stock 21s version. Should be also an image file, in standard twrp go to install - image, after selecting the image file click on recovery and install, after installation go back, reboot, recovery. Copy 21s to storage, wipe data, cache, dalvik and flash it, chinesse twrp will skip version check and will let you install the stock image, after install reboot but click on do not replace recovery button - this will keep the chinesse twrp installed.
Click to expand...
Click to collapse
My phone has been flashed multiple times by qfil method. And always it hangs at initial setup (so it boots up, but hangs at language selection or further up screens, before setup can complete and launcher could be loaded).
While trying to flash again with qfil once it stopped at 25 percent (because the battery went dead). Charged the battery and booted up the phone, and i was surprised it booted up. After 2-3 attempts i was able to reach the launcher screen and immediately enabled developer options and oem unlock / usb debugging. Only had few split seconds to do this and the phone froze again. After that i installed twrp and hence treying different roms. Most fail at setup.
Just tried MIUI 9PRO ROM. It also froze at setup multiple times, but once i was able to complete the setup and miui launcher is up , but it reboots or turn off the phone just after that. So cant do anything with the phone. Unsure of whether a newer bootloader will help in these freezing issues as i have been able to boot up at least in some roms only if for few seconds. Will try to tinker the settings of miui rom (if the phone let me do it before freezing/hanging). Lets see. Thanks for suggestions. More suggestions welcome, because i am still unsure weather this is a software or hardware related problem. I am guessing that it may have something to do with Google security as earlier i was getting msg that phone has been wrongly resetted and needs to verify with Google (but i couldn't get a chance to use the same account, as phone kept freezing at setup).
Did you fully charge the battery, if not let it fully charge in twrp. Flashing the roms in twrp works everytime or do you see any errors? Before you flash anything disconnect the usb cable.
---------- Post added at 09:54 PM ---------- Previous post was at 09:47 PM ----------
Try to flash the 21s bootloarder with modem, one zip using twrp. Go to fastboot mode and wipe modems. fastboot erase modem1st fastboot erase modem2st. Put the phone to flash mode and reimage with qfil. Before you do it write down both imeis, you can find them also on the original package on the backside. Also try to remove all sim cards from the phone and try a different cable. If nothing helps, hw issue, maybe the power button mention earlier in this thread.
After reflash skip everything at setup and reset phone to factory defaults. OEM is already unlocked, you dont have to do it again.
I have charged the phone fully before any flashing after that error. I can flash the phone through twrp without any error msg. The phone boots up most of times in various roms but hangs at or after the initial setup screens show (like language selection etc). Flashed the modem+bootloader, success, but it showed bootloader version as 20s (not 21s). Tried the commands u mentioned to erase modems, it say error failed, no such partition found. I had checked the partitions with parted and 56 partitions are there including the modemst1 & 2.
Now re flashed via qfil , did as advised but again the same problem of hanging / freezing at or after initialization screens of various roms.
Forthe55 said:
I have charged the phone fully before any flashing after that error. I can flash the phone through twrp without any error msg. The phone boots up most of times in various roms but hangs at or after the initial setup screens show (like language selection etc). Flashed the modem+bootloader, success, but it showed bootloader version as 20s (not 21s). Tried the commands u mentioned to erase modems, it say error failed, no such partition found. I had checked the partitions with parted and 56 partitions are there including the modemst1 & 2.
Now re flashed via qfil , did as advised but again the same problem of hanging / freezing at or after initialization screens of various roms.
Click to expand...
Click to collapse
Yeah sorry i screwed the command its fastboot erase modest1 modemst2, my bad.
Just now i was able to complete the initialization (setup screen) of sparse image india rom. I can reach the launcher and settings for few seconds before the device freezes or reboots.
So the same problem , with which i started, the only good thing is that i have been able to set oem unlock to on, so that i can flash trwp and various roms (but all fail with the same freezing issues)
Forthe55 said:
Just now i was able to complete the initialization (setup screen) of sparse image india rom. I can reach the launcher and settings for few seconds before the device freezes or reboots.
So the same problem , with which i started, the only good thing is that i have been able to set oem unlock to on, so that i can flash trwp and various roms (but all fail with the same freezing issues)
Click to expand...
Click to collapse
So you erased modems and reflashed with qfil right? If so i assume its a HW problem. Try the fix with the power button, i ran out of ideas
Last thing which can help maybe: https://www.youtube.com/watch?v=LH3VOIlLfvo&t=135s
Download 21s stock image + the chinesse twrp, links should be under the video, i think so, or look somewhere in the forum for new links. Try to reflash the 21s, some people reported that freezing issues were gone after installing the latest EUI. Basically you can do the same after QFIL reflash but you need enough time to copy the ZIP file as UPDATE.ZIP to the internal storage and run the local update via setting, system update and local update, i hope that TWRP will work for you, just follow the video tutorial.
delltech1 said:
Last thing which can help maybe: https://www.youtube.com/watch?v=LH3VOIlLfvo&t=135s
Download 21s stock image + the chinesse twrp, links should be under the video, i think so, or look somewhere in the forum for new links. Try to reflash the 21s, some people reported that freezing issues were gone after installing the latest EUI. Basically you can do the same after QFIL reflash but you need enough time to copy the ZIP file as UPDATE.ZIP to the internal storage and run the local update via setting, system update and local update, i hope that TWRP will work for you, just follow the video tutorial.
Click to expand...
Click to collapse
Did that also, the same problem. The phone freezes after the os is booted. I was wondering what is that isnt touched by flashing ( in download mode or fastboot mode or through twrp). I may need to tinker that. The roms are all fine in the sense they all stop at the same points. Something in the phones partition, which isnt touched by flashing? (There must be, as i flashed with qfil, the oem unlock remains, the bootloader didn't lock, and it remains unaffected by re-imaging)
Try this, maybe it helps:
https://forum.xda-developers.com/le-2/help/issues-installing-twrp-rom-le-s3-x522-t3618662/page2

Encryption unsuccessfull after going back to miui

Hello everyone, i have a Little problem, i'm actually on latest aex mod 8.1 and everytime i try to install a miui based rom (epic and masik) installation is going fine, boot too but i'm stuck with a message telling me that encryption was unsuccessfull a message pop ups to restart phone and perform a Factory reset to solve this issue.i hit the button, phone restart to twrp wipe automatically data i guess (don't really remember) and reboot and again the same message. I've never encrypted my device and twrp dosn't ask me for a password. I've only set a fingerprint with pin code to secure my phone. Still i could restore my aex backup with twrp.
Anyone could explain whats going on?
Édit: same error if i try to install RR 7.1 it tells me that encryption (not decryption) was interrupted and had to reboot to twrp and restore a back up. I'm really confused

No accelerometer, no proximity sensor, no gyroscope MI8 SE

Hi guys.
First of all, excuse me if this is the wrong place to post this.
I have a serious problem here with mi MI8 SE. Yesterday I unlocked the bootloader and I installed the miui.eu 8.8.30. When I started to use it, I thought it a little buggy. The proximity sensor was not working and the landscape mode was not working either.
I installed now the stable version of MIUI 10. The problems go on. I saw some videos on youtube speaking about the CIT menu (you can access it by pressing several times the Kernel Version).
I tried to calibrate the accellerometer, the gyroscope, the proximity sensor with no success. All the parameters are zero.
I have no ideia what to do.
I really appreciate any help.
https://forum.xda-developers.com/mi-8-se/help/mi8-se-sensors-t3830945
try flashing stable miui 9 rom. see if the problem persists! if yes then its hardware problem
Download the fastboot miui 10 china rom.
Unzip and extrat the file persist.img.
Place It on internal memory.
Reboot in twrp then select install --> install Image and choose the persist img you've downloaded.
Reboot and you are done.
In that way the persist partition is replaced by the original and all sensors are reported to stock and fine
How reinstall the persist.img with bootloader locked?
I only have 3 days with the cellphone and the camera stop after update.

stock rom lockscreen problems

Hi, this is my first post and im having problems with my A6.
I tried to install TWRP wich mostly worked fine, but i didnt follow the tutorial correctly wich left my device boot looping at the boot-logo (i didnt install the zip files needed),
so i thought i soft-bricked my device and i downloaded correct stock rom versions from [cant post outside link because im new, but it would go here]
and installed it with Odin3.
This has worked fine and i restored it again, but for some reason if i set the lockscreen protection (like PIN or Fingerprint) it first wont work (but it shows changed in settings)
and when you reboot the device it soft-bricks at the lockscreen and keeps showing the samsung logo then lockscreen for 1 second and samsung again etc. (this wont brick if i dont set any protection)
I have tried a lot of things like installing TWRP again and clearing cache but none seem to fix the problem (other than doing a factory reset).
so im asking here if someone has a clue to what is happening?
EDIT: i will try to install a older version and try to update it with the official updater and i will report back shortly
Results: It did fix my problem with the lockscreen but if i flash TWRP and install Magisk it wont work again
EDIT2: apparently if i wait long enough at the lockscreen-bootloop(atleast couple of minutes) it will grant me access but the protection still doesnt work
EDIT3: Im using Android 9 and i noticed that this is probably the cause, but i didnt find a updated version

Recovery mode and Root issues after stock flash

Hello all before I describe my issue lemme tell you how I got there.
First of all, new phone, couldn't install pixelexperience and flashing stock android was being a pain with all methods (read not working), only managed to install stock android with pitch black recovery.
After a while it auto updated to android 9 and I started having wifi issues that people told me were android's fault so I waited for an update. Update came but android was unable to install it, giving errors after errors every time it downloaded the update.
My solution to all of this was to flash another rom, either stock or custom, and pray it works. It was scheduled to happen in 2 days, when I had free time.
Today, when trying to change the permission for a text file for an app from read only to write, some random process crashed, and it triggered a crashing cascade, including the settings app, homescreen launcher, etc until the phone restarted and got stuck in TWRP logo screen.
No key press, combination, resets, etc would fix it. So I got into fastboot and tried a few things with no luck. Flash stock rom again and phone seemed to be working.
Magisk manager couldn't install magisk and root the phone so I went into stock recovery/twrp and every time I did it I got a black screen message saying something like this:
"Your phone/system is corrupt and won't boot ever again *evil laugh*. Oh btw, go to this link in another device to cry more"
and the link redirects to a google page with some non-useful info.
So here I am, unable to root, unable to go into recovery, phone boots though. I force-stoped updates for a while, as android 9 wifi issues were terrible, and I don't know how to proceed.
Do I flash a stock image again, a custom one, try another rooting method?
I don't want to brick a 6month old phone, really sucks.
Btw, is there a reliable way to back up everything in the phone ?(not only google stuff, but app configs and files/folders) Long time ago I read something about Titanium backup but never looked into it further and now with this crash that lost me everything I wanna prepare for the future.
Thanks for all the help and for reading my boring story.
Even I am facing same problem.. In my case my phone is rooted and I cnt flash TWRP and I cnt get into fastboot mode.. I alwys endup with black screen..

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