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Bootloop, flash locked. What can I do?

Short story: my phone bootloops (shows the Android One screen for 3 seconds, then reboots), and I cannot unlock the flash in fastboot. fastboot oem unlock fails, fastboot flashing unlock fails, fastboot flashing critical_unlock fails.
What can I do, is my phone definitely bricked?
Long story: I installed september OTA and then rooted with Magisk using the image patch method. Now I wanted to get October OTA, so uninstalled Magisk to recover the unpatched bootloader, but the OTA refused to install. So I tried the flash_all method, but it failed because I did not do the critical unlock. So I tried the fastboot flash critical_unlock, but it continuously refused to work.
So I decided to agan lock flash, and do the oem lock, to restart the unlock procedure from the beginning. But after locking, the phone does not boot anymore (and it was booting fine before!). On top of that, I cannot oem unlock anymore, fastboot oem unlock always fails.
Is there any way to recover the phone?

Try fastboot oem edl
then use mi flash

Thanks for help.
Unfortunately fastboot oem edl fails:
Code:
# fastboot oem edl
FAILED (remote: Device is already locked!)
Finished. Total time: 0.001s
And as fastboot oem unlock also fails, I cannot unlock the bootloader.

doragasu said:
Thanks for help.
Unfortunately fastboot oem edl fails:
And as fastboot oem unlock also fails, I cannot unlock the bootloader.
Click to expand...
Click to collapse
I'll need more info than that
what's the error you get when using oem unlock or unlock_critical?
are you using minimal adb? If so, don't, use this instead https://developer.android.com/studio/releases/platform-tools
Are you using a usb 3.0 port? Switch to a usb 2.0 if you are

I am working from Linux, and I have the full Android Studio installed. I cannot use adb, since I cannot boot the phone (and as far as I know, adb does not work on fastboot, but I might be wrong).
I will try with the one you linked and come back with the results.

doragasu said:
I am working from Linux, and I have the full Android Studio installed. I cannot use adb, since I cannot boot the phone (and as far as I know, adb does not work on fastboot, but I might be wrong).
I will try with the one you linked and come back with the results.
Click to expand...
Click to collapse
Minimal adb includes fastboot, if you have minimal adb or you installed it from the repo then it's outdated, use the one I linked

Nothing was working for me, so finally I recovered the phone by opening it and using the deep flash method.

Bricked A2 only fastboot

Hi guys, i need some help, i wanted to convert my A2 in 6X, and i need to enter edl mode to do this. Because i couldn't enter edl via fastboot or adb (i had unlocked bootloader ad twrp recovery installed) i tried to relock bootloader (maybe this was the error), now i'm stuck at message that says that system is corrupt and devices wouldn't boot, i can only access fastboot, tried to boot twrp via fastboot but didn't work, fastboot getvar unlocked return no, now i'm trying to follow the guide to unbrick from ARB but phone should be in edl mine is in fastboot, please help me, any suggestion is accepted! Thanks

https://forum.xda-developers.com/mi-a2/how-to/mi-a2-toolkit-unlock-bootloader-root-t3834585
use option 5 then select the second option
it will boot the device into edl mode.
if you have issues with it not letting you enter it with this then try to unlock the bootloader again.

Daha3ker said:
https://forum.xda-developers.com/mi-a2/how-to/mi-a2-toolkit-unlock-bootloader-root-t3834585
use option 5 then select the second option
it will boot the device into edl mode.
if you have issues with it not letting you enter it with this then try to unlock the bootloader again.
Click to expand...
Click to collapse
already did it, didn't work, unlocking bootloader gave me error: oem unlock is not allowed.
i menage to enter edl mode using test point method, after that i flashed latest rom, and phone booted up, but i turned off to reassable it, and when i tried to reboot it it went to edl mode and i cannot exit edl mode, my pc see it like QUALCOMM9008 and if i try to flash with miflash it does the flash but i can't bot it after flashing success. i'm trying now to download an older fastboot rom

Flash Official ROM A2

Hello all!
I recently bought a second hand Xiaomi MI A2 online however I found a problem.
The previous owner did a factory reset on it but I'm stuck in the initial set up configuration because it asks me for the google account credentials attached to the phone. I texted the previous owner but had no answer.
So I tried to flash the official ROM to bypass the issue but I get an error message from Xiaomi Flash Tool saying "remote: Flash is not allowed in Lock State".
I think this is happening for one of the following reasons:
The previous owner didn't enable USB Debugging (thing I can't do because I'm stuck in the set up configuration)
The bootloader is locked (and I can't unlock it because I don't have the credentials of the attached account)
Does anyone knows how can I solve this problem?
Thank you for your attention

Joaosacramento said:
Hello all!
I recently bought a second hand Xiaomi MI A2 online however I found a problem.
The previous owner did a factory reset on it but I'm stuck in the initial set up configuration because it asks me for the google account credentials attached to the phone. I texted the previous owner but had no answer.
So I tried to flash the official ROM to bypass the issue but I get an error message from Xiaomi Flash Tool saying "remote: Flash is not allowed in Lock State".
I think this is happening for one of the following reasons:
The previous owner didn't enable USB Debugging (thing I can't do because I'm stuck in the set up configuration)
The bootloader is locked (and I can't unlock it because I don't have the credentials of the attached account)
Does anyone knows how can I solve this problem?
Thank you for your attention
Click to expand...
Click to collapse
Maybe you can see/ask in this thread for mia2 toolkit (I'm not sure but you can ask there )
https://forum.xda-developers.com/mi-a2/how-to/mi-a2-toolkit-unlock-bootloader-root-t3834585

daitalos said:
Maybe you can see/ask in this thread for mia2 toolkit (I'm not sure but you can ask there )
https://forum.xda-developers.com/mi-a2/how-to/mi-a2-toolkit-unlock-bootloader-root-t3834585
Click to expand...
Click to collapse
Thank you, will give it a try!
EDIT: Not working, every time I try to execute the unlock I got an error message "remote: Flashing Unlock is not allowed"

Joaosacramento said:
Thank you, will give it a try!
EDIT: Not working, every time I try to execute the unlock I got an error message "remote: Flashing Unlock is not allowed"
Click to expand...
Click to collapse
(yes...normally, first you must enable "OEM unlocking" from developer option
_ https://forum.xda-developers.com/mi-a2/how-to/guide-how-to-unlock-bootloader-xiaomi-t3831484
__but first for your problem with locked device, see here for FRP apk : https://www.google.gr/search?q=com.....69i57j0l5.14869j0j8&sourceid=chrome&ie=UTF-8
__and here frp mia2 : https://www.google.gr/search?q=frp+.....69i57j0l3.7035j0j8&sourceid=chrome&ie=UTF-8
first "unlock" your device & then you can unlock bootloader easy ....
sry for english

Just unlock bootloader(critical too) and use miflash

I also have a Mi A2 stuck in android logo screen can't can't boot into device developer options to unlock bootloader.
Fastboot oem unlock give me error flashing is not allowed.
Is there anyway around this?

You need to do an unlock of critical partitions - "fastboot flashing unlock_critical"

daitalos said:
(yes...normally, first you must enable "OEM unlocking" from developer option
_ https://forum.xda-developers.com/mi-a2/how-to/guide-how-to-unlock-bootloader-xiaomi-t3831484
__but first for your problem with locked device, see here for FRP apk : https://www.google.gr/search?q=com.....69i57j0l5.14869j0j8&sourceid=chrome&ie=UTF-8
__and here frp mia2 : https://www.google.gr/search?q=frp+.....69i57j0l3.7035j0j8&sourceid=chrome&ie=UTF-8
first "unlock" your device & then you can unlock bootloader easy ....
sry for english
Click to expand...
Click to collapse
Hey! It worked, thank you very much!

Face_11 said:
I also have a Mi A2 stuck in android logo screen can't can't boot into device developer options to unlock bootloader.
Fastboot oem unlock give me error flashing is not allowed.
Is there anyway around this?
Click to expand...
Click to collapse
https://forum.xda-developers.com/mi-a2/how-to/mi-a2-toolkit-unlock-bootloader-root-t3834585
(or flash stock rom via mi flash tool/ fastboot files) : http://en.miui.com/download-353.html
follow / read fastboot quide : http://en.miui.com/a-234.html

daitalos said:
https://forum.xda-developers.com/mi-a2/how-to/mi-a2-toolkit-unlock-bootloader-root-t3834585
(or flash stock rom via mi flash tool/ fastboot files) : http://en.miui.com/download-353.html
follow / read fastboot quide : http://en.miui.com/a-234.html
Click to expand...
Click to collapse
Thanks. I've tried the MIFlash Tool and I get Error Flashing Not allowed in Lock State. I've also tried the MI A2 ToolKit and get the same message. Basically anything I try and do states device is locked or unable to run in Lock State.
Boot Loader is currently locked and I cannot access developer mode to enable OEM unlocking. Question I have is :
- Can I use EDL Cable to work around this or do EDL cables not longer work with Newer Xiaomi phones?
- If EDL cable doesn't work, is the tespoint method my only option.
thanks in advance

Face_11 said:
Thanks. I've tried the MIFlash Tool and I get Error Flashing Not allowed in Lock State. I've also tried the MI A2 ToolKit and get the same message. Basically anything I try and do states device is locked or unable to run in Lock State.
Boot Loader is currently locked and I cannot access developer mode to enable OEM unlocking. Question I have is :
- Can I use EDL Cable to work around this or do EDL cables not longer work with Newer Xiaomi phones?
- If EDL cable doesn't work, is the tespoint method my only option.
thanks in advance
Click to expand...
Click to collapse
yes it's difficult .... I understand
edl maybe work, but I'm not sure...maybe if you go to a repair shop is a better solution
(see & here : https://forum.xda-developers.com/mi-a2/help/edl-deep-flash-cable-t3828732 )
https://youtu.be/n_7RVmW2Rvs
https://forum.xda-developers.com/showpost.php?p=77327325&postcount=2
Gl

Face_11 said:
Thanks. I've tried the MIFlash Tool and I get Error Flashing Not allowed in Lock State. I've also tried the MI A2 ToolKit and get the same message. Basically anything I try and do states device is locked or unable to run in Lock State.
Boot Loader is currently locked and I cannot access developer mode to enable OEM unlocking. Question I have is :
- Can I use EDL Cable to work around this or do EDL cables not longer work with Newer Xiaomi phones?
- If EDL cable doesn't work, is the tespoint method my only option.
thanks in advance
Click to expand...
Click to collapse
I would try a wipe from the recovery but if that doesnt work then just test point the phone. It isnt that hard, I had to do it myself today because of a soft brick. You just need a T3 screwdriver really. Take out the 2 bottom screws. Take a razor and slide it under the corner of the display and lift it enough the get a credit card in there. Then just work around and you should be able to get the screen off. Take the small metal plate off just above the battery and disconnect the battery and the connector on the right. There will be the test points, short them out, connect the phone to the pc(you can stop shorting out the points when it gets detected) and you have like 10-15secs to start flashing the phone in miflash(obviously you need to have the drivers already set up).

I have same problem with xiaomi mi a2 which had bootloop. Was not able to start device at all so no oem unloco no developer options and no usb debug. It was possible only adb sideload and fastboot. Adb sideload did nothing. I was trying to flash with adb sideload but it stops at 47% with message 1.00 x. Did try several roms with same results. Then i tried fastboot options. Falied to unlock not allowed. Itsl was impossible to get even into phone to activate developer options so i can activate oem unlock and the rest. I tried edl mode which did flash but then i got error message in bootloader it failed to mount system etc. Then i tried mi x6 rom to convert phone to another which doesnt have usual recovery mode but a stripped oem recovery mode. Now when u go back to mi a2 rom its bricked so there is no option of adb at all now. I tried to use mi x6 mi assistant option but app wont recognize usb connection it shows try normal mode then switch. When activating mi assistant on phone it does recognize rom version from recovefy flash in mi assistant app but when it downloads update rom version it cant continue. With pixel you can do anything with adb and it is so easy but xiaomi sucks big time. You cant do anything. Fastboot flashing unlock critical and fastboot oem unlock gets error failed. Flashing not allowed. U tried diferent cables but no luck. So now what? Thats why i hate adb. On samsung odin you can do impossible possible. Even with sp tools on mtk. Even boxes works flawlessly but xiaomi system is just thr worse. It doesnt matter if you get soemthing lost there is always a solution to other phones.

After having device sit as a paper weight for a few months, i broke down and ordered a phone repair kit. Opened device up and flashed via test point method. Worked Flawless. Time to enable OEM unlock so i don't have to open it up again. Thanks to community for all the help.

Use cmd
- go to fastboot then "fastboot oem unlock"
- go to fastboot again "fastboot flashing unlock_critical"
Flash with mi flash
Done

Just stumbled upon this and while may be 18 months too late, here's the step by step process to flash ROM on MI A2 that's giving error "Flash is not allowed in Lock State":
1) switch off device
2) enter fastbood mode (press hold power+vol down few seconds)
3) connect device with laptop
4) install and open adb folder on laptop (https://forum.xda-developers.com/showthread.php?t=2588979)
5) within adb folder -- shift + right click = open powershell here
6) fastboot flashing unlock_critical
7) step #6 may be pointless if phone is bricked but do it anyway
8) fastboot oem edl
9) find and download latest stock rom for your device (FASTBOOT version). It'll be .tgz file
10) extract the image folder from within (would be the same name as .tgz file)
11) open miflash (coudln't find link but look it up, it's easy)
12 select the image folder you extracted in step #10
13) click refresh. device name appear means it's recognized
14) from bottom of mi flash tool select whatever you want. I do "clean all"
15) flash (top right mi flash tool)
Face_11 said:
Thanks. I've tried the MIFlash Tool and I get Error Flashing Not allowed in Lock State. I've also tried the MI A2 ToolKit and get the same message. Basically anything I try and do states device is locked or unable to run in Lock State.
Boot Loader is currently locked and I cannot access developer mode to enable OEM unlocking. Question I have is :
- Can I use EDL Cable to work around this or do EDL cables not longer work with Newer Xiaomi phones?
- If EDL cable doesn't work, is the tespoint method my only option.
thanks in advance
Click to expand...
Click to collapse

Flashing is not allowed in lock state
i got a error recently in my mi a2 no software is installed but locked.
when i try to flash from mi flash tool it says flashing is not allowed in lock state
when i try to unlock in cmd flashing is not allowed in lock state
is there any one to fix this

IamUmesh said:
i got a error recently in my mi a2 no software is installed but locked.
when i try to flash from mi flash tool it says flashing is not allowed in lock state
when i try to unlock in cmd flashing is not allowed in lock state
is there any one to fix this
Click to expand...
Click to collapse
you need to open phone with screwdriver & do the test point ..search for video on YouTube...then EDL deepflash state you can use miflash to put back OFFICIAL only rom to device.

Xiaomi MI A2 can't boot, only fastboot

Hi guys, it's my first post. I have my MI A2 bricked after the last update. It's stuck at android logo and I can access only fastboot, no adb. Via fastboot I tried to wipe the phone, install TWRP, unlock the bootloader, but the answer is always I cant flash or do anything with a locked phone. What can I do? Is it possible to save data?

With locked bootloader and critical all your attempts to flash anything via fastboot could not succed, unless .you have previously got developer rights and checked "OEM unlock" option. With this option ON, and using USB 2.x port, you could unlock bootloader and critical via fastboot, but have no ways to save data (which is erased with unlocking as with factory reset).
Try to reboot many times with external power off and on, phone is supposed to boot into now inactive A/B slot (which was active prior to OTA) sooner or later, then you can save data and unlock.
If nothing helps, you'll have to open case, connect "[email protected] (or EDL) pins and then flash stock ROM with MiFlash, and then unlock and reflash with fastboot.

Xiaomi MI A2, is stuck in bootloop

Hi Guys,
My MI-A2 is stuck in bootloop ( When I turn on my phone it shows its Android One logo and then it shutdown itself ).
In my phone, I didn't turn on any USB Debugging or and OEM unlocking. and now it is possible as the phone is not starting.
I am able to access fastboot and recovery options
I tried to do factoryReset the device from the recovery option but it is just wiping the data.
here are the following things which I have tried with fastboot.
- I tried to unlock the fastboot with MiFlashUnlock but it stops at 99% and gives me the error of unable to verify the device,
- flashing the Stock ROM isn't working with MiFlashTool. giving random errors.
- tried changing the drive partition. it gives error to unlock the device first.
- tried tried to flash TWRP but it also gives me the error of unlocking the device first.
Almost every command of Fastboot is giving me some kind of error
But I am able to access the ADB Sideload from the recovery option.
- I tried to load the April OTA update from ADB Sidelode. The update is Successfully installed. But the device is still in bootloop.
Saving User data is not my priority. I just want the device to be working anyhow. As per my assumption, Fastboot is not an option for me unless it unlocked. I think something from the ADB sideload can be done.
Any help will be appreciated.

Is it a Guide?
Oh, now, its a Great News!
Please delete this post from this forum.
As I have already wrote to you, questions should go to "Questions and Answers" forum.
And as I have already wrote to you, Search works here, and if you've used it, you'd get answers (in mentioned above forum):
1. MiA2 having A/B slots architecture, - is supposed to recover to the other slot X when OTA corrupts ROM is slot Y, - after numerous boot attempts.
2. In case you have tampered phone with try-and-see operations without knowing what you were doing - the only way to recover phone is: TEST Point / EDL. Search these keywords in this forum for appropriate Guide.

try the "fastboot continue" command

dillu12 said:
Hi Guys,
My MI-A2 is stuck in bootloop ( When I turn on my phone it shows its Android One logo and then it shutdown itself ).
In my phone, I didn't turn on any USB Debugging or and OEM unlocking. and now it is possible as the phone is not starting.
I am able to access fastboot and recovery options
I tried to do factoryReset the device from the recovery option but it is just wiping the data.
here are the following things which I have tried with fastboot.
- I tried to unlock the fastboot with MiFlashUnlock but it stops at 99% and gives me the error of unable to verify the device,
- flashing the Stock ROM isn't working with MiFlashTool. giving random errors.
- tried changing the drive partition. it gives error to unlock the device first.
- tried tried to flash TWRP but it also gives me the error of unlocking the device first.
Almost every command of Fastboot is giving me some kind of error
But I am able to access the ADB Sideload from the recovery option.
- I tried to load the April OTA update from ADB Sidelode. The update is Successfully installed. But the device is still in bootloop.
Saving User data is not my priority. I just want the device to be working anyhow. As per my assumption, Fastboot is not an option for me unless it unlocked. I think something from the ADB sideload can be done.
Any help will be appreciated.
Click to expand...
Click to collapse
you need to flash the phone in edl mode
**just be careful there is a timeout ..when you put it into edl you need miflash and rom.loaded
*** download a stock fastboot stable pie for jasmine
**** unzip amd select revelant xml from within miflash
*****on phone manually boot to fastboot mode with buttons
****** run command "fastboot oem.edl"
*******device will boot to black screen ... immediately go to miflash and press the button to start flashing
___BE CAREFUL__ select clear all tick box at bottom of miflash screen
this should be enough to rescue your device regardless of what you've done or whether you unlocked bootloader or not