Rooted miui 12 but Bootloader locked. Is it safe? - Redmi K20 Pro / Xiaomi Mi 9T Pro Questions & Answe

Hi all,
Couple of days back, my k20 pro (Indian) had unlocked Bootloader and was rooted.
Everything was working fine. Then I did something wrong and it stuck on MiUI logo.
I then tried to restore TWRP backup(boot,system,data). After reboot, it got stuck on FASTBOOT logo.
Then i flashed miui stock firmware with miflash tool (CLEAN ALL was ticked, NOT clean all+lock)
It worked then i again rooted it. It's now working fine. Also showing Bootloader locked few hours back but now its showing Bootloader is Locked in developer option.
It also show popup sometime
"Mi find device closes unexpectedly"
So, is it safe that Bootloader is locked? Will mi flash tool work if something goes wrong in future?
Sent from my Redmi K20 Pro using Tapatalk

You should unlock your bootloader. If the bootloader is locked and anything goes wrong then you will have to go for EDL flash. So, unlocking will be a good idea

I am wondering if it is even possible to have a rooted device with the bootloader locked.

JimzFreebies said:
It worked then i again rooted it. It's now working fine. Also showing Bootloader locked few hours back but now its showing Bootloader is Locked in developer option.
It also show popup sometime
"Mi find device closes unexpectedly"
So, is it safe that Bootloader is locked? Will mi flash tool work if something goes wrong in future?
Sent from my Redmi K20 Pro using Tapatalk
Click to expand...
Click to collapse
It's a false positive. Bootloader isn't locked.
Mi 9T Pro ll Tapatalk

kibria.mgk said:
It's a false positive. Bootloader isn't locked.
Mi 9T Pro ll Tapatalk
Click to expand...
Click to collapse
Yes, i just checked by switching it off and on. Its showing Bootloader unlocked icon at top while switching ON.
But why its showing locked in developer option?
Also, Find device not working, gives error Find device stopped unexpectedly
Sent from my Redmi K20 Pro using Tapatalk

Saswata Chakraborty said:
I am wondering if it is even possible to have a rooted device with the bootloader locked.
Click to expand...
Click to collapse
Many old phones could do this

Related

Re-lock Mi 8 Bootloader after moving from China Stable to Global Stable

Appreciate if someone can help.
I purchased a Mi 8 Chinese version with China Stable ROM, unlocked Bootloader after waiting 372 long hours and yesterday installed recently released Global Stable ROM. Everything went well and phone worked perfectly. However, when I tried to re-lock the Bootloader, (using both XiaoMiTool and Fastboot methods) the Bootloader gets locked but the phone goes into Recovery bootloop every time with a message at the bottom that "this Miui version cannot be installed on this device....." When I unlock the bootloader again (by booting into fastboot and using Xiaomi Unlock tool) the phone boots normally.
So can I conclude that the bootloader cannot be locked unless I move back to China Stable ROM which originally came with the phone? I read somewhere that Xiaomi has disable the re-locking of bootloader just to curb selling of Chinese versions as Global, as some sellers were selling Chinese versions of Xiaomi phones as Global after installing Global ROMs.
I'm having the same issue as you just did. Not sure why the bootloader can't be relocked. I thought the model # between HK and China versions were supposed to be the same..
Recently xiaomi makes some ugly rules about local and global variant device to prevent Chinese device selling globally and global device selling into china. For that user can flash global rom to china variant device and global variant device to china rom, but we have to unlocked bootloader. Device will perform normally just find device will not worked. Also antirollback terrible disgusting too. I have some xiaomi mobile device and selling them one by one. Only keeping Mi8. If I need more secure device, I can buy iphone. I no need then xiaomi device.
People loving Xiaomi because of its hardware and software with up-gradation facilities. But their operating system optimization is really bad. Every update makes device performance different.
dowload mi unlock . and login account -->> reboot mi 8 fastboot -->> unlock -->> OK . Done successful good luck
hoangvubb.195 said:
dowload mi unlock . and login account -->> reboot mi 8 fastboot -->> unlock -->> OK . Done successful good luck
Click to expand...
Click to collapse
Relock and unlock are two very different words. You know.
Sent from my MI 8 using Tapatalk
XiaoMiTool is crap...
Use official MiFlashTool => http://download.appmifile.com/images/2018/06/13/f267b936-45cd-4b3d-b15a-947fb4b674b1.zip
http://en.miui.com/forum.php?mod=viewthread&tid=3014918
Use the option "Clean all and lock" when installing via fastboot
Marcb said:
XiaoMiTool is crap...
Use official MiFlashTool => http://download.appmifile.com/images/2018/06/13/f267b936-45cd-4b3d-b15a-947fb4b674b1.zip
http://en.miui.com/forum.php?mod=viewthread&tid=3014918
Use the option "Clean all and lock" when installing via fastboot
Click to expand...
Click to collapse
No bootloop now after doing this?
Regards
rodfrang said:
No bootloop now after doing this?
Regards
Click to expand...
Click to collapse
Actually I was reading some things on the MIUI official forum and * apparently* if you have a chinese MI 8 and want to switch to Global rom, your bootloader must remain unlobcked.... I'm not seeing much confirmation on that, but I would be catious...
Marcb said:
Actually I was reading some things on the MIUI official forum and * apparently* if you have a chinese MI 8 and want to switch to Global rom, your bootloader must remain unlobcked.... I'm not seeing much confirmation on that, but I would be catious...
Click to expand...
Click to collapse
Yeah, switching to a global rom on a Chinese variant and then locking the bootloader will result in a brick. But I don't understand why anyone would relock the bootloader since most repair shops find out if you unlocked it in the past.
Relock not for warranty reasons, but to get android pay / NFC payment or other banking apps working. Many of them won't work with BL unlocked.
i read that we need an authorized edl account to relock the bootloader, but now it is impossible to get this account..
so this time i'm very dissappointed with xiaomi.
The Marionette said:
Yeah, switching to a global rom on a Chinese variant and then locking the bootloader will result in a brick. But I don't understand why anyone would relock the bootloader since most repair shops find out if you unlocked it in the past.
Click to expand...
Click to collapse
Netflix app and Google Pay needs locked bootloader.
The Mi Mix 2S has the same problem, it seems this person solved it by using recovery version of global ROM with Mi PC Suite: http://en.miui.com/forum.php?mod=viewthread&tid=2943351&page=2#pid27478883
I don't have the device to test it yet, but you should at least be able to keep an unlocked bootloader and use apps that require it to be locked by using Magisk and enabling Magisk Hide on those apps.
Marcb said:
Netflix app and Google Pay needs locked bootloader.
Click to expand...
Click to collapse
Netflix work
Envoyé de mon MI 8 en utilisant Tapatalk
romanxx said:
i read that we need an authorized edl account to relock the bootloader, but now it is impossible to get this account..
so this time i'm very dissappointed with xiaomi.
Click to expand...
Click to collapse
I do not know if I can post the link here, but there is a topic in the MIUI forum that gives EDL authorization for just an unbrick. And you must wait for your position in the list.
Magisk...
I think you can use Netflix and/or banks' apps through Magisk hide functions and so be it
Zanbot3 said:
I think you can use Netflix and/or banks' apps through Magisk hide functions and so be it
Click to expand...
Click to collapse
hye.mi8 with global rom can install magisk?
arsyadvyn said:
hye.mi8 with global rom can install magisk?
Click to expand...
Click to collapse
Yeah
hoangvubb.195 said:
dowload mi unlock . and login account -->> reboot mi 8 fastboot -->> unlock -->> OK . Done successful good luck
Click to expand...
Click to collapse
:good::good:congratulations my friend. I was already sad that I did not understand.
Its solution is simple but of enormous importance for mi8users.
I also did everything ok, but at mi8 it was different. I also received "this Miui version can not be installed on this device ....."
I downloaded miflash unlock .... romGlobal was already installed on mi8 but with blockloaded bootloader it did not work ok.
Now I'm happy and with GlobalRom stable very fast.:good:
Hi,
I try to relock the bootloader with Global ROM install but the phone haven't sign-in with Xiaomi account and it get the same message as your guy "this miui version cannot..." . Now I can't unlock my bootloader to revert it and my phone stay at recovery or fastboot, can anyone know how to flash it back?

Please help me with my soft bricked Redmi k20 pro

I bought my phone in Aliexpress with global room. It had already unlocked bootloader and because of that my phone didn't pass safety net. So i wanted to lock bootloader.
I was following this tutorial: How to Lock / Re-Lock Bootloader in any Phone
up to 1:49 when my phone suddenly restarted and then this screen appeared: miui can't be installed on this device
And now I am stuck in this infinite loop. Can anyone help?
bertolintus said:
I bought my phone in Aliexpress with global room. It had already unlocked bootloader and because of that my phone didn't pass safety net. So i wanted to lock bootloader.
I was following this tutorial: How to Lock / Re-Lock Bootloader in any Phone
up to 1:49 when my phone suddenly restarted and then this screen appeared: miui can't be installed on this device
And now I am stuck in this infinite loop. Can anyone help?
Click to expand...
Click to collapse
Flash Chinese Firmware?
Can you be more specific please?
bertolintus said:
Can you be more specific please?
Click to expand...
Click to collapse
You locked your Chinese phone with the fake global rom? You can only lock a chinese phone with chinese miui, this is known.
bertolintus said:
Can you be more specific please?
Click to expand...
Click to collapse
Fastboot ROMs are used to restore soft bricked phones. Hopefully, despite your efforts, your bootloader is still unlocked.
Download a fastboot ROM from here.
https://forum.xda-developers.com/k2...irmware-10-3-8-0-9-6-13-t3939647/post79726515
Follow this guide here to flash it.
http://en.miui.com/a-234.html
In step 5 the options at the bottom of the Mi Flash Tool are set to 'clean all and lock' by default. This will lock the bootloader after flashing the official Chinese ROM. If you want a global ROM, then you do not want to lock the bootloader, you will need to change the option to 'clean all' before installing.
If you have managed to re-lock the bootloader and screw up the phone at the same time, then see this thread and read it all.
https://forum.xda-developers.com/k20-pro/help/destroyed-error-fastboot-locked-t3946012

This MIUI version can't be installed on this device.

Few days ago I bought Redmi K20 Pro from China. There was by default Chinese Stable ROM on my device. So I wanted to flash Global Stable ROM & replace Chinese Stable ROM. I got the permission to unlock my bootloader through mi flash unlock tool.
So I unlocked the bootloader on PC. Then I tried to flash Global Stable Fastboot ROM using mi flash tool. While I was flashing, mistakenly I chose "clean all & locked" on mi flash tool.
After flashing, my phone got stuck on recovery mode & it shows "This MIUI version can't be installed on this device". While I am trying to unlock my bootloader again using mi flash unlock tool then it says: You should wait 30 days to unlock another device.
Anyone can give me a proper solution how to get rid of it? I am stuck with it since yesterday.
Your help will be very much appreciated.
Shaonhider97 said:
Few days ago I bought Redmi K20 Pro from China. There was by default Chinese Stable ROM on my device. So I wanted to flash Global Stable ROM & replace Chinese Stable ROM. I got the permission to unlock my bootloader through mi flash unlock tool.
So I unlocked the bootloader on PC. Then I tried to flash Global Stable Fastboot ROM using mi flash tool. While I was flashing, mistakenly I chose "clean all & locked" on mi flash tool.
After flashing, my phone got stuck on recovery mode & it shows "This MIUI version can't be installed on this device". While I am trying to unlock my bootloader again using mi flash unlock tool then it says: You should wait 30 days to unlock another device.
Anyone can give me a proper solution how to get rid of it? I am stuck with it since yesterday.
Your help will be very much appreciated.
Click to expand...
Click to collapse
1. Thread is in the wrong section
2. You can only unlock one device per month.
3. You are lucky if you didn't brick your device.:laugh:
Kollachi said:
1. Thread is in the wrong section
2. You can only unlock one device per month.
3. You are lucky if you didn't brick your device.:laugh:
Click to expand...
Click to collapse
Bro what can I do now?
Shaonhider97 said:
Bro what can I do now?
Click to expand...
Click to collapse
Try after 7 days from today or at max you'll have to wait for 30 days before you can unlock. Use an another phone for the time being.
Sent from my Redmi K20 Pro using Tapatalk
Shaonhider97 said:
Bro what can I do now?
Click to expand...
Click to collapse
The limit is unlocking once per calender month.
On the 1st of the month the time will therefore reset to the normal 7 days, so you'll save a week at least. Still not good, but better than nothing.
If you cannot wait, you could open up the phone and put the phone into EDL mode and unlock and flash it. Look here for info about this option
https://forum.xda-developers.com/k20-pro/help/destroyed-error-fastboot-locked-t3946012/post79852687
As for needing an authorised account, people have reported success using s-unlock details of which can be found here.
https://forum.xda-developers.com/k20-pro/help/destroyed-error-fastboot-locked-t3946012/post79856871
Problem is fixed!
Thanks to all of you guys. I was able to flash the Chinese stable ROM through test point/edl method with the help of a technician. Its BL is still locked & I am running the latest Chinese Stable ROM.
Shaonhider97 said:
Thanks to all of you guys. I was able to flash the Chinese stable ROM through test point/edl method with the help of a technician. Its BL is still locked & I am running the latest Chinese Stable ROM.
Click to expand...
Click to collapse
Did the technician open the back panel to perform the EDL or just straight away flash?
Sent from my Redmi K20 Pro using Tapatalk
Sukhi said:
Did the technician open the back panel to perform the EDL or just straight away flash?
Sent from my Redmi K20 Pro using Tapatalk
Click to expand...
Click to collapse
He opened the back panel.
Only China official rom can relock
Other version such as EU/INDIA/GLOBAL,after unlock BL you can't relock again, I have see this information in other post.
---------- Post added at 21:29 ---------- Previous post was at 21:21 ----------
Shaonhider97 said:
Thanks to all of you guys. I was able to flash the Chinese stable ROM through test point/edl method with the help of a technician. Its BL is still locked & I am running the latest Chinese Stable ROM.
Click to expand...
Click to collapse
I think this is the best way to solve your problem,but still have to wait for applying BL unlock,after that you can start the second flashing.
Hey man I have the same problem. Except I cannot wait to unlock the bootloader because there is no account associated with my phone right now.
So I wanted to ask you to point me in the right direction. I can do the testpoint connection myself in order to go to edl mode.
What I want to know is if I can flash using just MiFlash tool or I need some other mi account or software?
Thank you!

Bricked Mi 9T Pro

Hello. I flashed Global ROM over European ROM. my phone bricked, system and recovery is destroyed, I have only access to fastboot. I tried to unlock it and mi unlocker tool says I need to wait about 120 hours. My question is, will it unlock after that period time even when the phone is not in use and turned off? Because I don't want to open the back and pay for EDL flashing. Thanks.
costorektypico said:
Hello. I flashed Global ROM over European ROM. my phone bricked, system and recovery is destroyed, I have only access to fastboot. I tried to unlock it and mi unlocker tool says I need to wait about 120 hours. My question is, will it unlock after that period time even when the phone is not in use and turned off? Because I don't want to open the back and pay for EDL flashing. Thanks.
Click to expand...
Click to collapse
As far as I know it should unlock OK. I personally haven't done this, but there are accounts on these forums of others who successfully unlocked the phone after the wait period in the same circumstances as you. If you were going to have problems you wouldn't have got as far as getting the wait period.
Robbo.5000 said:
As far as I know it should unlock OK. I personally haven't done this, but there are accounts on these forums of others who successfully unlocked the phone after the wait period in the same circumstances as you. If you were going to have problems you wouldn't have got as far as getting the wait period.
Click to expand...
Click to collapse
Thank you very much.
costorektypico said:
Hello. I flashed Global ROM over European ROM. my phone bricked, system and recovery is destroyed, I have only access to fastboot. I tried to unlock it and mi unlocker tool says I need to wait about 120 hours. My question is, will it unlock after that period time even when the phone is not in use and turned off? Because I don't want to open the back and pay for EDL flashing. Thanks.
Click to expand...
Click to collapse
Your bootloader locked itself when flashing? Or you ticked to lock bootloader?
rober788 said:
Your bootloader locked itself when flashing? Or you ticked to lock bootloader?
Click to expand...
Click to collapse
I flashed it via XiaoMiTool v2. It was OTA Package. And now when I successfully booted into Global ROM, I can't flash back EU ROM like Global before. I had all the time locked bootloader.

Mi 9T Pro cannot boot and cannot unlock.

This is Mi 9T Pro but i ain't sure which version is that.
So basically i have an issue that the phone won't boot after my dad updated the device.
I tried to flash the ROM but apparently i flashed the wrong rom and by accident i even locked the bootloader.
The phone's state is Locked
I can't boot to ROM
I try to unlock it with Mi Unlock Tool but it ask to add account to MIUI Settings and ofc it's unaccassable.
I try to unlock it from fastboot and no success.
If anyone can help me with a solution, I'll be very grateful.
yot2703 said:
This is Mi 9T Pro but i ain't sure which version is that.
So basically i have an issue that the phone won't boot after my dad updated the device.
I tried to flash the ROM but apparently i flashed the wrong rom and by accident i even locked the bootloader.
The phone's state is Locked
I can't boot to ROM
I try to unlock it with Mi Unlock Tool but it ask to add account to MIUI Settings and ofc it's unaccassable.
I try to unlock it from fastboot and no success.
If anyone can help me with a solution, I'll be very grateful.
Click to expand...
Click to collapse
Unfortunately, you have to look (and pay for his help) for somebody with EDL account

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