Develop Bugs

Virtually impossible to unlock bootloader

Guys, I need some help to confirm the only solution I found for my problem, or if I can still try other solutions.
I bought a Mi5s that already came from seller with the global stable rom. I asked the official bootloader unlock to Xiaomi and has received authorization by SMS. But the unlock application stucks at 50% saying that the device being unlocked is different from the one authorized on Mi account. I looked for some solutions like deleting all the devices in the page i.mi.com, leaving only the Mi5s, but I did not have success. Other solution is flash chinese developer rom
Another solution is to flash Chinese developer rom, to confirm unlock of the device on the developer screen and then to use the official tool unlock. But I didn't find any way to flash the developer rom. I've tried using Chinese PC Suite, fastboot mode, MiFlash, and all says that the rom I am trying to flash (Chinese) is different from the rom of the device (global).
The only solution I found is to buy a deep flash cable and flash the developer rom in EDL mode. Or hope to launch the global developer rom for Mi5s, which so far we have no prospect in the short term.
Do you suggest I try some other solution? Thanks in advance.

Try logging into mi cloud with your mi5s using the same account you used to asked the request to unlock.

gnazio said:
Try logging into mi cloud with your mi5s using the same account you used to asked the request to unlock.
Click to expand...
Click to collapse
Already had done it, no success

From http://en.miui.com/thread-482266-1-1.html
Under settings/additional settings/developer options, click Mi unlock status. Click add account and device. Your device will now be automatically added to your Mi account.
Next,enable OEM unlocking and USB debugging under developer options.
Then connect your mobile to the pc or laptop while on fastboot mode. Unlock again. This time, it will be successful!

Same problem. Can't unlock my Mi 5S on Global Stable firmware (V8.0.3.0). And can't flash to China Developer firmware.
---------- Post added at 12:12 AM ---------- Previous post was at 12:11 AM ----------
BPSoft said:
Under settings/additional settings/developer options, click Mi unlock status. !
Click to expand...
Click to collapse
On Global Stable 8.0.3.0 there is no Mi unlock status in Developer settings

zzzit said:
On Global Stable 8.0.3.0 there is no Mi unlock status in Developer settings
Click to expand...
Click to collapse
Go to "About Phone" and tap "MIUI Version" multiple times to unlock it.

BPSoft said:
Go to "About Phone" and tap "MIUI Version" multiple times to unlock it.
Click to expand...
Click to collapse
I already did it lol
Global Stable firmware doesn't have any Mi Unlock status parameter on Developer Settings.

zzzit said:
I already did it lol
Global Stable firmware doesn't have any Mi Unlock status parameter on Developer Settings.
Click to expand...
Click to collapse
Sorry i was on mobile and understood you badly.
According to this:
http://en.miui.com/thread-202290-1-1.html
You should have that parameter no matter you are at global or not, but if you don't you should flash a developer version, instruction at the same page.
Before you say "i can't flash developer rom", did you tried the updater app to flash it?

Force flash your rom using special cable to enter fastboot to install. I dont know its detail, but the installation called Deep Flash using deep flash cable sold on ebay

alediniz said:
Guys, I need some help to confirm the only solution I found for my problem, or if I can still try other solutions.
I bought a Mi5s that already came from seller with the global stable rom. I asked the official bootloader unlock to Xiaomi and has received authorization by SMS. But the unlock application stucks at 50% saying that the device being unlocked is different from the one authorized on Mi account. I looked for some solutions like deleting all the devices in the page i.mi.com, leaving only the Mi5s, but I did not have success. Other solution is flash chinese developer rom
Another solution is to flash Chinese developer rom, to confirm unlock of the device on the developer screen and then to use the official tool unlock. But I didn't find any way to flash the developer rom. I've tried using Chinese PC Suite, fastboot mode, MiFlash, and all says that the rom I am trying to flash (Chinese) is different from the rom of the device (global).
The only solution I found is to buy a deep flash cable and flash the developer rom in EDL mode. Or hope to launch the global developer rom for Mi5s, which so far we have no prospect in the short term.
Do you suggest I try some other solution? Thanks in advance.
Click to expand...
Click to collapse
I had similar problems and I was also trying to figure out what to do to unlock bootloader on Global stable rom. The amount of people having the same problem where unlocking app stops at 50% is overwhelming ,judging from the comments found on google, but the info what is the actual problem is next to none. Suggested solutions looks to me like voodoo and most if not all probably doesn't have any impact on successful unlocking. As the Xiaomi unlock app is just a wrapper for fastboot executable I've checked what kind of commands are being send to the fastboot when you click unlock here they are.
fastboot getvar product
fastboot getvar soc-id
fastboot getvar soc_id
fastboot getvar board_version
So I've checked if I will actually get any info from bootloader if I send those commands manually, and with no surprise I didn't get any. So this was the problem at least in my case. Some kind of connection problem I'm not sure where exactly the fault is, probably drivers but try to issue those commands manually from command line I can bet you will not get any info from the phone. What to do if that's the case remove and reinstall drivers, this is what has worked for me. Good luck

Had the same problem. Got it solved today. the bad news you need a deep flashing cable, good news you can make it yourself.
Here is the guide:
http ://en.miui.com/thread-310325-1-1.html
http ://en.miui.com/thread-299790-1-1.html

I have unlocked 4 mi phones with no difficulty. Some of them with fake/seller ROM. Once you got permission make sure you have done all things right before preceding to Unlock. Usually it's all about loading the right driver for Xiaomi phone. Using default windows driver is not working. As it's not Microsoft signed driver you have to start windows in insecure mode.
You have to login in your mi account both on PC and on phone with SIM card ind.
Check that phone is verified settings/mi account on your phone.
Best luck

Something is with drivers for your phone. I have the same problem...than i delete drivers and than they automaticly reinstall and evarything works.

ka3yal said:
Had the same problem. Got it solved today. the bad news you need a deep flashing cable, good news you can make it yourself.
Here is the guide:
http ://en.miui.com/thread-310325-1-1.html
http ://en.miui.com/thread-299790-1-1.html
Click to expand...
Click to collapse
Hi, what exactly did you do to succeed? Thanks.
I am stuck on Mi5s with 8.0.3.0. global stable ROM and the unlock blocks on 50%.

ka3yal said:
Had the same problem. Got it solved today. the bad news you need a deep flashing cable, good news you can make it yourself.
Here is the guide:
http ://en.miui.com/thread-310325-1-1.html
http ://en.miui.com/thread-299790-1-1.html
Click to expand...
Click to collapse
It worked for me!
Need a lot of patience

Mois1234 said:
Hi, what exactly did you do to succeed? Thanks.
I am stuck on Mi5s with 8.0.3.0. global stable ROM and the unlock blocks on 50%.
Click to expand...
Click to collapse
Follow the guide that I posted to make the cable(first link), install all the drivers and software needed (second link).
After successfully putting the phone in deep flash mode you need to update Qualcomm drivers (under device manager it must appear as com3 or com10 port after that).
Then use Mi Flash tool to flash Chinese dev rom (http ://bigota.d.miui.com/7.1.20/miui_MI5S_7.1.20_229fa68558_6.0.zip). If the flash fails the first time reboot the computer and try again.
After that sync connect your MI account to the device, enter Dev mode and you will find OEM Unlock option.
Not easy but it works.
Good Luck!

shamus said:
I had similar problems and I was also trying to figure out what to do to unlock bootloader on Global stable rom. The amount of people having the same problem where unlocking app stops at 50% is overwhelming ,judging from the comments found on google, but the info what is the actual problem is next to none. Suggested solutions looks to me like voodoo and most if not all probably doesn't have any impact on successful unlocking. As the Xiaomi unlock app is just a wrapper for fastboot executable I've checked what kind of commands are being send to the fastboot when you click unlock here they are.
fastboot getvar product
fastboot getvar soc-id
fastboot getvar soc_id
fastboot getvar board_version
So I've checked if I will actually get any info from bootloader if I send those commands manually, and with no surprise I didn't get any. So this was the problem at least in my case. Some kind of connection problem I'm not sure where exactly the fault is, probably drivers but try to issue those commands manually from command line I can bet you will not get any info from the phone. What to do if that's the case remove and reinstall drivers, this is what has worked for me. Good luck
Click to expand...
Click to collapse
zmajdk said:
I have unlocked 4 mi phones with no difficulty. Some of them with fake/seller ROM. Once you got permission make sure you have done all things right before preceding to Unlock. Usually it's all about loading the right driver for Xiaomi phone. Using default windows driver is not working. As it's not Microsoft signed driver you have to start windows in insecure mode.
You have to login in your mi account both on PC and on phone with SIM card ind.
Check that phone is verified settings/mi account on your phone.
Best luck
Click to expand...
Click to collapse
mmicoo said:
Something is with drivers for your phone. I have the same problem...than i delete drivers and than they automaticly reinstall and evarything works.
Click to expand...
Click to collapse
ka3yal said:
Follow the guide that I posted to make the cable(first link), install all the drivers and software needed (second link).
After successfully putting the phone in deep flash mode you need to update Qualcomm drivers (under device manager it must appear as com3 or com10 port after that).
Then use Mi Flash tool to flash Chinese dev rom (http ://bigota.d.miui.com/7.1.20/miui_MI5S_7.1.20_229fa68558_6.0.zip). If the flash fails the first time reboot the computer and try again.
After that sync connect your MI account to the device, enter Dev mode and you will find OEM Unlock option.
Not easy but it works.
Good Luck!
Click to expand...
Click to collapse
I tried all the possibilities described, that do not need flash developer rom using a deep flash cable. I changed drivers and everything, no success.
In time, I already ordered a deep flash cable here in Brazil. For my part, I thank all fellas who tried to help me but gave up trying anything else. As the title of the topic, my device is currently virtually impossible to unlock in the normal way.

Mois1234 said:
Hi, what exactly did you do to succeed? Thanks.
I am stuck on Mi5s with 8.0.3.0. global stable ROM and the unlock blocks on 50%.
Click to expand...
Click to collapse
I have same problem to unlock Mi5s before but then realize that you need to update driver on your PC from Keadcom (or samething) into Marshall London Bootloader and it success.
Now my Mi5s uncloked officially.
I just use same Mi account which has permission to unlock my previous device which is Mi5.
No need deep flash cable, just normal cable can do.
Hope this help.

deksudi said:
I have same problem to unlock Mi5s before but then realize that you need to update driver on your PC from Keadcom (or samething) into Marshall London Bootloader and it success.
Now my Mi5s uncloked officially.
I just use same Mi account which has permission to unlock my previous device which is Mi5.
No need deep flash cable, just normal cable can do.
Hope this help.
Click to expand...
Click to collapse
Thanks you very much!
Unfortunately this this did not help. My assumption is that 8.0.3.0. Global stable needs ROM-internal permissions, which are currently missing. (In fastboot mode ADB is able to communicate to the phone, so it is not a driver issue.)

Unlocking bootloader
Mois1234 said:
Thanks you very much!
Unfortunately this this did not help. My assumption is that 8.0.3.0. Global stable needs ROM-internal permissions, which are currently missing. (In fastboot mode ADB is able to communicate to the phone, so it is not a driver issue.)
Click to expand...
Click to collapse
No it doesn't mean it will work with Mi Unlock tool. It is some time ago I have guided one on this forum trough procedure and he succeeded at least. Read his experience: https://forum.xda-developers.com/re...king-beast-t3416088/post67695482#post67695482

Flash Official Full ROM without unlocking bootloader

How can I flash MIUI 9 Official Full ROM without unlocking the bootloader?
I pressed the ”OEM Unlocking” without unlocking the bootloader. I didn't even enter the approved account in "Mi unlock status". Now the status is unlocked. The bootloader is actually still locked. When I use PC to unlock bootloader, it goes until 99% and gives me the error "Current account is not bound to this device". I tried resetting the phone from settings (wipe data partition) but the status is still unlocked.
The question is how can I undo the status to locked so that I can continue unlocking this device and enter the approved account to "Mi unlock status"?

Growtopia Jaw said:
How can I flash MIUI 9 Official Full ROM without unlocking the bootloader?
I pressed the ”OEM Unlocking” without unlocking the bootloader. I didn't even enter the approved account in "Mi unlock status". Now the status is unlocked. The bootloader is actually still locked. When I use PC to unlock bootloader, it goes until 99% and gives me the error "Current account is not bound to this device". I tried resetting the phone from settings (wipe data partition) but the status is still unlocked.
The question is how can I undo the status to locked so that I can continue unlocking this device and enter the approved account to "Mi unlock status"?
Click to expand...
Click to collapse
Apply for permission, wait to receive confirmation, sign into account on phone and on Mi unlock tool. Bit too Fastboot mode, on Mi-unlock tool it gets to 99% and then should give you a message to wait 360 hours. This is correct, it will work after the amount of time (about 2 weeks).

Thanks,
But this problem got even worse. I updated to MIUI 9.5 from MIUI 9.1. The update failed. It is not possible to boot into Android either. I even tried formating data. The bootloader is locked. I applied permission and already received it.
I bought the phone via China Mobile.
I suspect that my ROM may be a fake one. But it looks totaly original.
1. 4 digit version code
2. NCKMIEI --> Official and correct MIUI 9.1 version
3. Gapps preinstalled
4. No bloatware
5. Everything looks the same like the original ROM
6. Even Mi Remote is working
What I'm thinking about now is how is the Mi status "Unlocked" even I didn't even enter the approved Mi account used to unlock the bootloader.
I know the bootloader is really "locked" because
[email protected]> fastboot oem device-info
Locked
-----------------------------------------------------------------------------
I'm currently trying to flash CN MIUI ROM through EDL mode (test point) because Global ROM failed. Then try to unlock bootloader from CN MIUI ROM and re-flash Global ROM through MiFlash

Okay, so the phone runs fine now. The phone now runs CN MIUI 9 9.5.3.0 stable version. I am still waiting for the 360 hours (15 days) man!!! for the bootloader unlocking. I applied for the unlocking. Will update when I successfully return to Global Stable ROM.
I flashed CN MIUI 9 ROM via test point. When it reboots, it will show you the error you've encountered before. Relax! Just reboot and wait for about 15 minutes and your phone is alive again.
Thanks Xiaomi for the INCREDIBLY TIGHT SECURITY ???

Growtopia Jaw said:
Okay, so the phone runs fine now. The phone now runs CN MIUI 9 9.5.3.0 stable version. I am still waiting for the 360 hours (15 days) man!!! for the bootloader unlocking. I applied for the unlocking. Will update when I successfully return to Global Stable ROM.
I flashed CN MIUI 9 ROM via test point. When it reboots, it will show you the error you've encountered before. Relax! Just reboot and wait for about 15 minutes and your phone is alive again.
Thanks Xiaomi for the INCREDIBLY TIGHT SECURITY ???
Click to expand...
Click to collapse
Bro can you explain EDL method.?
Currently i am also not able to unlock BL.
(Error :- current Account Couldn't Unlock This Device)
If i flash china rom via edl , Will i able to unlock bootloader.?
Current Rom :- miui global 9.5 | stable 9.5.10.0(NCAMIFA)

ash_pipaliya said:
Bro can you explain EDL method.?
Currently i am also not able to unlock BL.
(Error :- current Account Couldn't Unlock This Device)
If i flash china rom via edl , Will i able to unlock bootloader.?
Current Rom :- miui global 9.5 | stable 9.5.10.0(NCAMIFA)
Click to expand...
Click to collapse
There is some risk you have to take in order to flash via EDL (test point) mode.
1. You have to backup all of your data. When you flash via EDL mode, your phone will return to "stock" like when you first buy the phone.
2. Flashing via EDL mode will involve removing the phone's back cover. You have to do this if you really want to flash via EDL mode.

Growtopia Jaw said:
There is some risk you have to take in order to flash via EDL (test point) mode.
1. You have to backup all of your data. When you flash via EDL mode, your phone will return to "stock" like when you first buy the phone.
2. Flashing via EDL mode will involve removing the phone's back cover. You have to do this if you really want to flash via EDL mode.
Click to expand...
Click to collapse
I tried open back panel, i am going to flash china developer rom using edl. Hope i can unlock BL on chinese rom.
And can i flash china developer rom using fastboot..? With locked BL..?

ash_pipaliya said:
I tried open back panel, i am going to flash china developer rom using edl. Hope i can unlock BL on chinese rom.
And can i flash china developer rom using fastboot..? With locked BL..?
Click to expand...
Click to collapse
Yes. You can unlock bootloader after flashing with EDL mode.

Only use China ROM if you bought your phone from China. If your phone is International phone / not bought from China, I advice you to flash Global ROM first. If it doesn't work, then try China ROM.

Growtopia Jaw said:
Only use China ROM if you bought your phone from China. If your phone is International phone / not bought from China, I advice you to flash Global ROM first. If it doesn't work, then try China ROM.
Click to expand...
Click to collapse
I am already on global rom but unable to unlock Bootloader. I am trying from 8 days

ash_pipaliya said:
I am already on global rom but unable to unlock Bootloader. I am trying from 8 days
Click to expand...
Click to collapse
Have you tried a different account? Try registering a new account and don't change anything. Then apply unlock bootloader permission at https://en.miui.com/unlock/. After applying for permission, enter your account details in Mi Unlock Status.
If you have a PC, download Mi Unlock Tool here: http://miuirom.xiaomi.com/rom/u265827351/2.3.803.10/miflash_unlock-en-2.3.803.10.zip
Open Mi Unlock Tool by clicking miflash_unlock.exe.
Enter your login details and reboot your phone to fastboot mode.
Plug in your phone.
Press unlock.
If successful, you will see a message with "After 360 hours of trying to unlock device"
This is normal.
You need to wait for 15 days to try to unlock the bootloader.
There is no quicker way to overcome this. I also waited for 15 days. Also please don't keep pressing unlock in your PC when the 15 days is not over. It will block your device and you can't unlock again.
If you need some personal assistance, private message me and I will give you my Facebook / Messenger ID.

Can anyone help me? Mi Max 3 can't be booted nor flashed anymore..

Hi I have a big problem with my Max 3.
I ulocked it and then I flashed it with the official Xiaomi Flash App and clicked the 'clean all and lock' button. Unfortunally I flashed a bad ROM.
Now I can only boot to recovery (This MIUI version can't be installed on this device) and Fastboot.
If I try to flash a ROM I see 'Erase not allowed in lock state'. I tried to unlock it with fastboot, I receive 'Token verify failed' I tried with Mi Unlock: My account is accepted and when I click Unlock
I have 'Current account is not bound to this device' But I can't bound it because i can't boot it!!
I would be very, very happy about a solution for this mess!!!
Thanks everyone who has i idea!

Use MiFlash tool, flash the fastboot version of latest global stable or beta rom on: https://forum.xda-developers.com/mi-max-3/how-to/rom-official-recovery-fastboot-roms-mi-t3827503

dinhvtai said:
Use MiFlash tool, flash the fastboot version of latest global stable or beta rom on: https://forum.xda-developers.com/mi-max-3/how-to/rom-official-recovery-fastboot-roms-mi-t3827503
Click to expand...
Click to collapse
He already tried that. You can't use MiFlash with locked bootloader.
I am afraid you have bricked your phone. Unless you have an official Xiaomi servicecentre nearby.

mierlo420 said:
He already tried that. You can't use MiFlash with locked bootloader.
Click to expand...
Click to collapse
Are you sure?

I had exactly the same. Locked my device when flashing (!!!?) then error while flashing, format the phone and everything was gone, locked bootloader.
After a search of 2 months I found out it was possible to repair the phone.
You have to open your phone, not very hard..follow this video https://youtu.be/dYlKG3EcpHg
Then contact the guys from S-Unlock https://s-unlock.com. I did it too, and they are thrustworthy.
You have to test point your device, https://youtu.be/IYWItgq2f9E until the Quallcom driver appears in your devicelist.
Then contact S-Unlock via chat. It can take up to 2 hours before the respond. The service cost 25 dollar for installing new Rom.
They log in to your computer via Teamviewer, they install MiFlash and Rom.
They have a special restore account. Without this account your Max will never work again, no need to try.
For 25 dollar my Max3 is working again.

Locked bootloader, stuck in recovery mode.

Hello guys.
I recently bought this phone and wanted to use netflix, but didn't allow me because it outdated and said it was not compatible with my phone. So I did a bit of research and found a post in "mi community" that said it was because phone had bootloader unlocked. The phone was new and I didn't change anything of it, but I found the bootloader was unlocked.
Installed fastboot and adb drivers, locked bootloader and got myself into a... Brick?
-I can still load into fastboot.
-If I turn on the phone, It tries to load android but loads Mi-Recovery 3.0 instead. Recovery also says "This MIUI version can't be installed on this device"
I'm so lost from this point, I need to know if there is a way to flash any rom, and which one do I need.
Thanks in advice

stuck on recovery
Most likely a chinese phone that came with global rom. If it came with global rom try flashing chinese rom and then unlocking bootloader and reflash global. Do not lock bootloader after flashing global.

toxiccat said:
Most likely a chinese phone that came with global rom. If it came with global rom try flashing chinese rom and then unlocking bootloader and reflash global. Do not lock bootloader after flashing global.
Click to expand...
Click to collapse
Thanks for your answer, that is exactly what I've.
The problem is I tried to flash a Chinese from but it always denie it. Tried to flash the last global rom and allows me to do it with the same program.
Not sure where I can get the official chinese rom or how to bypass the xiaomi protection.
Thanks for helping! Hope I can somehow do it

Locked bootloader
Try searching for tools below which might help.
Saki / XiaomiADBFastbootTools
XiaomiADBFastbootTools-6.5.1-Win
I had hard bricked mine and had to take back off and use EDL to revive.

toxiccat said:
Try searching for tools below which might help.
Saki / XiaomiADBFastbootTools
XiaomiADBFastbootTools-6.5.1-Win
I had hard bricked mine and had to take back off and use EDL to revive.
Click to expand...
Click to collapse
I don't find the way to reboot (via software) to EDL from fastboot, is still possible to access it by opening the phone?

Locked bootloader
23javi23 said:
I don't find the way to reboot (via software) to EDL from fastboot, is still possible to access it by opening the phone?
Click to expand...
Click to collapse
If you can flash global ROM. I think you just need to unlock bootloader and then flash China ROM once you have unlocked bootloader.
China ROM link below
https://xiaomifirmware.com/roms/latest-official-miui-roms-for-xiaomi-mi-max-3/

toxiccat said:
If you can flash global ROM. I think you just need to unlock bootloader and then flash China ROM once you have unlocked bootloader.
China ROM link below
https://xiaomifirmware.com/roms/latest-official-miui-roms-for-xiaomi-mi-max-3/
Click to expand...
Click to collapse
It lets me flash de global one, but when I try to do the same with chinese rom, it says the version is lower, so I can't "downgrade".
It's weird because according to version number, the global one was a few versions lower

Solved the issue
The same issue , i was also encountered , After Flashing with "Xiaomi_Mi_Max_3_V10.2.1.0.PEDMIXM_20190226.0000.00_Global_9.0" Mi Max 3 with the MiFlash20191206 tool , by default the tool used "Clear data and Lock".
The tool saying "Flashing" and my phone got rebooted and went to MI Recovery 3.0 and also i got the message as
"This MIUI version can't be installed on this device".
I am not clueless how to proceed. So downloaded the Chinese version and again i tried to flash with above tool. Now tool said that "Can't Erase Locked" phone.
So Now i connected to Miflash_unlock with fastboot and connected to mi account and again i unlocked the phone.
Now my phone automatically booted to the Global version.
So i hope the issue is selecting the option as "Clear data and lock" . We need to select only "Clear data" in the flash tool.

23javi23 said:
Hello guys.
I recently bought this phone and wanted to use netflix, but didn't allow me because it outdated and said it was not compatible with my phone. So I did a bit of research and found a post in "mi community" that said it was because phone had bootloader unlocked. The phone was new and I didn't change anything of it, but I found the bootloader was unlocked.
Installed fastboot and adb drivers, locked bootloader and got myself into a... Brick?
-I can still load into fastboot.
-If I turn on the phone, It tries to load android but loads Mi-Recovery 3.0 instead. Recovery also says "This MIUI version can't be installed on this device"
I'm so lost from this point, I need to know if there is a way to flash any rom, and which one do I need.
Thanks in advice
Click to expand...
Click to collapse
Hi there,
I encountered the same issue. I tried to flash some CN Rom without enough research, without knowing that you can't just flash an Android 10 rom from 9 directly by recovery (even TWRP). So I ended up Fastboot or TWRP but never able to boot into system. Fortunately I didn't flash my Max3 by fastboot rushly, so my phone was still unlocked.
This is how I solved it:
1. Download an official CN ROM (the below I used is MIUI 11 with Android 9.9.x);
I can't post link here but search "miui通过线刷升级" - you shall see a miui.com link ending with shuaji-393.html. That's the page I download the Mi Max3 ROM from.
2. Use MiFlash to flash the official ROM with the flash option "clean all", NOT "clean All and lock";
3. The phone shall reboot into system, give it 5-10 minutes;
4. Flash the miui.eu ROM you like (DO make sure it is Android 9 tho) by recovery (tutorial given under every official xiaomi.eu ROM download).
Again it's easy to search
It took me less than an hour to do it (I don't have much experience with new XiaoMi phone). So don't worry about bricking your phone forever.
Hope it helps to destress

Hi guys. I need some help too because I'm not totally sure what I have to do here so if anyone can give me some tips I would appreciate it.
I just ordered the 128gb 6gb ram version of Mi Max 3 and it might come with the global rom and already unlocked. Should I use the Mi flash tool to install the file MIUI 11 V11.0.3.0.PEDCNXM android 9 fastboot file? then after that installs I should lock the bootloader and then unlock it again myself with my mi own account? I just want to make sure that this is the correct way to do it.
Also after it I unlock it should I flash the newest xiaomi.eu rom with android 10 or do i have to do something else first? Thank you

Question Bootloop to fastboot logo and back in lock state

Hi everybody,
yesterday I tried flashing the stock pocof3 rom back onto my phone, but since it got stuck in a bootloop at the fastboot logo. Showing the poco logo for a milisecond and then straight to fastboot..
(before this I flashed twrp and the arrowOS recovery and images a few time trying, without succes, to install this rom)
Last thing I did was flash via the mi-flash tool and did't see the "clean and lock" selection so it's also in lock state again.
I cant get adb to find the phone although the mi-flashtool is finding it.
anyone any tips?
I tried the vol up power trick, but this didn't help, keeps loading into fastboot

Did Mi Flash give an error message after trying to flash?

dreamytom said:
Did Mi Flash give an error message after trying to flash?
Click to expand...
Click to collapse
I dont recall giving an error, so i dont think so
now it is though, when trying to flash the firmware. error erasing boot_ab (failed: erase not allowed in lock state)

Kaayman said:
I dont recall giving an error, so i dont think so
now it is though, when trying to flash the firmware. error erasing boot_ab (failed: erase not allowed in lock state)
Click to expand...
Click to collapse
I'm not sure, but you may still be able to flash official ROMs.
But in "Configuration" make sure Erase is disabled

Kaayman said:
I dont recall giving an error, so i dont think so
now it is though, when trying to flash the firmware. error erasing boot_ab (failed: erase not allowed in lock state)
Click to expand...
Click to collapse
BAD NEWS... your Poco is bricked. You cannot flash ANYTHING using a PC when your bootloader is locked.
(I did same thing on a Mi11 5g last week and ended up selling it on eBay for spare & repairs
I tried sideload flash, miflash, copying update.zip to internal storage via ADB, and many other options - all without success).
- if your POCO is under warranty in your country (i.e. not a chinese import)... contact Xiaomi Support they can re-flash correct ROM
- Ask your local phone repair store... they *might* be able to flash original ROM back by using "Chimera" engineering software.

dreamytom said:
I'm not sure, but you may still be able to flash official ROMs.
But in "Configuration" make sure Erase is disabled
Click to expand...
Click to collapse
this doesn't seem to be an option. there is a checkbox with "erase all" but all are already unchecked

dezborders said:
BAD NEWS... your Poco is bricked. You cannot flash ANYTHING using a PC when your bootloader is locked.
(I did same thing on a Mi11 5g last week and ended up selling it on eBay for spare & repairs
I tried sideload flash, miflash, copying update.zip to internal storage via ADB, and many other options - all without success).
- if your POCO is under warranty in your country (i.e. not a chinese import)... contact Xiaomi Support they can re-flash correct ROM
- Ask your local phone repair store... they *might* be able to flash original ROM back by using "Chimera" engineering software.
Click to expand...
Click to collapse
This is what I feared already..

Kaayman said:
This is what I feared already..
Click to expand...
Click to collapse
- Bootloader was re-locked whilst a custom ROM was in the phone.
(MIUI with Locked bootloader will not boot up where ROM is not stock or does not match the region/product code).
You cannot apply for bootoader unlock because you cannot boot up into Android and request the unlock via Developer mode.
You cannot remotely (via PC cable) flash any ROM into a Xiaomi / POCO phone whilst botloader is locked.
You are in a chicken and egg situation.,,, but if you find a way to repair your phone, please let us know how you achieved it.
Good luck!

If the system hasn't booted up yet there is a chance that you will be able to unlock bootloader again. Try it.

mar.ur said:
If the system hasn't booted up yet there is a chance that you will be able to unlock bootloader again. Try it.
Click to expand...
Click to collapse
That's what I'm thinking too ...
Connect the phone to pc and do the bootloader unlock again via the mi unlock app - you don't need to apply again and stuff as long as you're able to recognise the phone inside app correctly

Rstment ^m^ said:
That's what I'm thinking too ...
Connect the phone to pc and do the bootloader unlock again via the mi unlock app - you don't need to apply again and stuff as long as you're able to recognise the phone inside app correctly
Click to expand...
Click to collapse
thanks everyone for all the replies!
tried unlocking it via the mi unlock tool (latest) but it says (in chinese) its locked by nr 123***456 by searching the phone - can't unlock
edit:
google lens translates:
X The phone has been locked by the account number 661****647 by searching the phone, Can't unlock
but it's not the nr. of my account..

dezborders said:
- Bootloader was re-locked whilst a custom ROM was in the phone.
(MIUI with Locked bootloader will not boot up where ROM is not stock or does not match the region/product code).
You cannot apply for bootoader unlock because you cannot boot up into Android and request the unlock via Developer mode.
You cannot remotely (via PC cable) flash any ROM into a Xiaomi / POCO phone whilst botloader is locked.
You are in a chicken and egg situation.,,, but if you find a way to repair your phone, please let us know how you achieved it.
Good luck!
Click to expand...
Click to collapse
Is it not even possible to flash Official ROMs?
Isn't there like a system that it checks the signature of the ROM and if it's a signed ROM it allows the flash? Or am I mistaken?

dreamytom said:
Is it not even possible to flash Official ROMs?
Isn't there like a system that it checks the signature of the ROM and if it's a signed ROM it allows the flash? Or am I mistaken?
Click to expand...
Click to collapse
Nope bootload locked = no 'remote' flashes via pc
Apparently there is an 'authenticated user' mode for Xiaomi engineers in MiFlaah and also an EDL Emergency Download Mode which you can trigger by shorting out 2 pins on the motherboard so bypass bootloader lock and flash any ROM
Neither were available options for me

dezborders said:
Nope bootload locked = no 'remote' flashes via pc
Apparently there is an 'authenticated user' mode for Xiaomi engineers in MiFlaah and also an EDL Emergency Download Mode which you can trigger by shorting out 2 pins on the motherboard so bypass bootloader lock and flash any ROM
Neither were available options for me
Click to expand...
Click to collapse
I also tried to simulate a local OTA by copying update.zip to internal storage using ADB push command and booting into recovery mode to flash ... But it doesn't work for me

dezborders said:
Nope bootload locked = no 'remote' flashes via pc
Apparently there is an 'authenticated user' mode for Xiaomi engineers in MiFlaah and also an EDL Emergency Download Mode which you can trigger by shorting out 2 pins on the motherboard so bypass bootloader lock and flash any ROM
Neither were available options for me
Click to expand...
Click to collapse
I'm now in the procedure to sent it back under warranty. any idea if this is possible and what the cost would be if not under warranty?
If all fails i'll try the shorting by pins, should be interesting

I think a warranty repair claim is your best bet ... I have never read anywhere that unlocking bootloader invalidates Xiaomi warranty (Unlike Samsung and so many other brands!)
If warranty repair is re refused try a few independent repair shops
Last resort is get the back cover off the phone and short out the EDL pins
Good luck!
Let us know if you manage to get your phone booting up again

See this thread (last post) for a possible workaround via a 3rd party recovery image to flash EU rom
[Solved] Stuck in fastboot with locked bootloader
HI there! After multiple problems with the custom ROMs I tested, I finally decided to go back to the stock ROM by downloading it from the official thread. I extracted the .tgz archive, run the "flash_all.bat" program, which failed by saying it...
forum.xda-developers.com

Kaayman said:
I'm now in the procedure to sent it back under warranty. any idea if this is possible and what the cost would be if not under warranty?
If all fails i'll try the shorting by pins, should be interesting
Click to expand...
Click to collapse
I once hardbricked (complete blackscreen, not even Fastboot reachable) a Poco F3.
I requested a replacement from Amazon and that worked.
I said a software update bricked it.
Of course having to do that is really bad, but I was scared of opening the back.

dezborders said:
See this thread (last post) for a possible workaround via a 3rd party recovery image to flash EU rom
Bootloop to fastboot logo and back in lock state
Hi everybody, yesterday I tried flashing the stock pocof3 rom back onto my phone, but since it got stuck in a bootloop at the fastboot logo. Showing the poco logo for a milisecond and then straight to fastboot.. (before this I flashed twrp and...
forum.xda-developers.com
Click to expand...
Click to collapse
You pasted the current thread, do you have the link to the thread you meant?

Kaayman said:
You pasted the current thread, do you have the link to the thread you meant?
Click to expand...
Click to collapse