I see a lot of people with bricked devices, what precautions should I take? - Redmi K20 Pro / Xiaomi Mi 9T Pro Questions & Answe

I see a lot of people with system has been destroyed error messages, both here and on reddit. Tomorrow will be 7 days since I bought the phone and I will be able to unlock the bootloader and I'm planning to flash twrp and xiaomi.eu.
I have the global mi 9t version bought from Europe with stock miui 10.3.3. Can you please recommend me some precautions to take to avoid bricking my device? I rooted a lot of devices over the years and I only had problems with my girlfriend's Mi A1 which I bricked and had to send to a service repair. So I'm a bit nervous with xiaomi phones and especially this device since I see so many problems. Is there a specific guice for this phone Mi9t pro, or is the k20 pro guide good?

lvnatic said:
I see a lot of people with system has been destroyed error messages, both here and on reddit. Tomorrow will be 7 days since I bought the phone and I will be able to unlock the bootloader and I'm planning to flash twrp and xiaomi.eu.
I have the global mi 9t version bought from Europe with stock miui 10.3.3. Can you please recommend me some precautions to take to avoid bricking my device? I rooted a lot of devices over the years and I only had problems with my girlfriend's Mi A1 which I bricked and had to send to a service repair. So I'm a bit nervous with xiaomi phones and especially this device since I see so many problems. Is there a specific guice for this phone Mi9t pro, or is the k20 pro guide good?
Click to expand...
Click to collapse
Almost all of these problems have been caused by people flashing fastboot ROMs with the Mi Flash Tool, where the ROM is for a different region to the phone. The problem happens when the default flash option of 'clean all and lock' has been used. Doing this is what causes the device to brick. Sometimes this has been done deliberately because the user didn't realise that it would brick and was trying to enable financial apps or Netflix, etc. to work correctly. Most of the time it's because the user hasn't been paying attention to what they are doing and forgot to change the flash option.
The only precaution you need to make, above and beyond what you would do for any other phone, is to check and double check, then check again that, whenever your flashing in the Mi Flash Tool, before you hit the Flash button you have changed the flash option at the bottom of the screen to 'clean all'.
If you actually do want to lock the bootloader then check, double check, then check again that the fastboot ROM you're installing is definitely, 100% the correct region for your phone.

Robbo.5000 said:
Almost all of these problems have been caused by people flashing fastboot ROMs with the Mi Flash Tool, where the ROM is for a different region to the phone. The problem happens when the default flash option of 'clean all and lock' has been used. Doing this is what causes the device to brick. Sometimes this has been done deliberately because the user didn't realise that it would brick and was trying to enable financial apps or Netflix, etc. to work correctly. Most of the time it's because the user hasn't been paying attention to what they are doing and forgot to change the flash option.
The only precaution you need to make, above and beyond what you would do for any other phone, is to check and double check, then check again that, whenever your flashing in the Mi Flash Tool, before you hit the Flash button you have changed the flash option at the bottom of the screen to 'clean all'.
If you actually do want to lock the bootloader then check, double check, then check again that the fastboot ROM you're installing is definitely, 100% the correct region for your phone.
Click to expand...
Click to collapse
I never used the MI flash tool, tomorrow I will use it for the first time to unlock the bootloader and the rest of the process I will do through fastboot commands. I hope everything will be fine thanks

lvnatic said:
I never used the MI flash tool, tomorrow I will use it for the first time to unlock the bootloader and the rest of the process I will do through fastboot commands. I hope everything will be fine thanks
Click to expand...
Click to collapse
Tomorrow you'll be using the Mi Unlock Tool.
A couple of things to point out. There is an issue with some/all versions of TWRP (not sure if they are all broken), - fastboot boot TWRP.img doesn't work, you'll end up having to reinstall a ROM if you try it, so use another method to boot into TWRP.
If you ever consider relocking the bootloader, then the standard fastboot command to do this won't work, I cannot remember if this will brick the phone or not.

Robbo.5000 said:
Tomorrow you'll be using the Mi Unlock Tool.
A couple of things to point out. There is an issue with some/all versions of TWRP (not sure if they are all broken), - fastboot boot TWRP.img doesn't work, you'll end up having to reinstall a ROM if you try it, so use another method to boot into TWRP.
If you ever consider relocking the bootloader, then the standard fastboot command to do this won't work, I cannot remember if this will brick the phone or not.
Click to expand...
Click to collapse
Thanks!

lvnatic said:
I see a lot of people with system has been destroyed error messages, both here and on reddit. Tomorrow will be 7 days since I bought the phone and I will be able to unlock the bootloader and I'm planning to flash twrp and xiaomi.eu.
I have the global mi 9t version bought from Europe with stock miui 10.3.3. Can you please recommend me some precautions to take to avoid bricking my device? I rooted a lot of devices over the years and I only had problems with my girlfriend's Mi A1 which I bricked and had to send to a service repair. So I'm a bit nervous with xiaomi phones and especially this device since I see so many problems. Is there a specific guice for this phone Mi9t pro, or is the k20 pro guide good?
Click to expand...
Click to collapse
I have the same concerns for my new mi9t pro.
Here is an article to read about anti rollback https://www.xda-developers.com/xiaomi-anti-rollback-protection-brick-phone/ to realize why there are all that problems and a method to see the indexes of the device and the ROM in order to make the right decision if it is safe flashing a specific ROM or not.
I don't suggest to consider K20 PRO cases familiar with the mi 9t pro, cause they have their own ROM versions specifically for China and India and that's is a part of the whole XIAOMI's anti rollback strategy.
Sent from my Mi 9T Pro using Tapatalk

[email protected] said:
I have the same concerns for my new mi9t pro.
Here is an article to read about anti rollback https://www.xda-developers.com/xiaomi-anti-rollback-protection-brick-phone/ to realize why there are all that problems and a method to see the indexes of the device and the ROM in order to make the right decision if it is safe flashing a specific ROM or not.
I don't suggest to consider K20 PRO cases familiar with the mi 9t pro, cause they have their own ROM versions specifically for China and India and that's is a part of the whole XIAOMI's anti rollback strategy.
Sent from my Mi 9T Pro using Tapatalk
Click to expand...
Click to collapse
Thanks, good article

[email protected] said:
I have the same concerns for my new mi9t pro.
Here is an article to read about anti rollback https://www.xda-developers.com/xiaomi-anti-rollback-protection-brick-phone/ to realize why there are all that problems and a method to see the indexes of the device and the ROM in order to make the right decision if it is safe flashing a specific ROM or not.
I don't suggest to consider K20 PRO cases familiar with the mi 9t pro, cause they have their own ROM versions specifically for China and India and that's is a part of the whole XIAOMI's anti rollback strategy.
Sent from my Mi 9T Pro using Tapatalk
Click to expand...
Click to collapse
Is there a problem with the mi9t pro global rom?
Planning to flash it on the k20 pro

That way you change MIUI region versions. That is the reason XIAOMI uses anti roll protection.
BECAREFULL. You must check the indexes of your device and the GLOBAL ROM you wanna flash
Sent from my Mi 9T Pro using Tapatalk

I have Chinese k20 pro and ibe flashed both eu roms and now im on global stable PIe (from android 10).
Bro just dont re lock your bootloader if you not have the official rom. Chinese or global.
If your phone is china you can relock the BL only if you flash china stock firmware.. the same you can do if your phone is global (mi9t pro).

Mr.Vag said:
I have Chinese k20 pro and ibe flashed both eu roms and now im on global stable PIe (from android 10).
Bro just dont re lock your bootloader if you not have the official rom. Chinese or global.
If your phone is china you can relock the BL only if you flash china stock firmware.. the same you can do if your phone is global (mi9t pro).
Click to expand...
Click to collapse
I suppose now you can't go back because your phone's index is updated, so if you flash older ROM u will brick the device ?
Sent from my Mi 9T Pro using Tapatalk

123elad said:
Is there a problem with the mi9t pro global rom?
Planning to flash it on the k20 pro
Click to expand...
Click to collapse
No its working perfect for me. . also it feels faster than eu rom both stable and beta.
Just all other set dont forget to change flash and lock option!

Mr.Vag said:
No its working perfect for me. . also it feels faster than eu rom both stable and beta.
Just all other set dont forget to change flash and lock option!
Click to expand...
Click to collapse
Thank you!
What do you mean by just all other set?
Thank's.

123elad said:
Thank you!
What do you mean by just all other set?
Thank's.
Click to expand...
Click to collapse
Sorry worng word. Is "like all other say"
Btw test eu roms too if you want but 8m changing between these roms but as i said before global looks much better

Mr.Vag said:
Sorry worng word. Is "like all other say"
Btw test eu roms too if you want but 8m changing between these roms but as i said before global looks much better
Click to expand...
Click to collapse
Thank you!
I will stay with the global rom till a stable custom rom will show up

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?

Fake global

Hi.
Unfortunately, I bought a k20 pro in the global version (aliexpress).
What do I have to do to not have brick? log in to mi account on the phone and Install the original china rom in mi flash and tick Clean all "option (not lock). Then wait again for the unlock bootloader?
having a global rom from aliexpress I can flash twrp right away and change rom ? Non Brick?
Radzią said:
Hi.
Unfortunately, I bought a k20 pro in the global version (aliexpress).
What do I have to do to not have brick? log in to mi account on the phone and Install the original china rom in mi flash and tick Clean all "option (not lock). Then wait again for the unlock bootloader?
having a global rom from aliexpress I can flash twrp right away and change rom ? Non Brick?
Click to expand...
Click to collapse
Basically the trick is to make sure you never accidentally relock the bootloader.
This normally happens if you've stuffed something up and need to flash a fastboot ROM. When this happens ALWAYS remember to change to 'clean All' when flashing with the Mi Flash Tool.
I assume the bootloader is already unlocked. If so, then you're 7 days ahead of the game and can go ahead and install TWRP and any other ROM of your choice. As long as you do everything correctly then you should have no problems.
Robbo.5000 said:
Basically the trick is to make sure you never accidentally relock the bootloader.
This normally happens if you've stuffed something up and need to flash a fastboot ROM. When this happens ALWAYS remember to change to 'clean All' when flashing with the Mi Flash Tool.
I assume the bootloader is already unlocked. If so, then you're 7 days ahead of the game and can go ahead and install TWRP and any other ROM of your choice. As long as you do everything correctly then you should have no problems.
Click to expand...
Click to collapse
I have a fake global and unlocked bootloader. So I can easily install twrp and change rom?
The only one I have to remember is that if I wanted to block bootloader again, I have to do it on china rom?
Radzią said:
I have a fake global and unlocked bootloader. So I can easily install twrp and change rom?
The only one I have to remember is that if I wanted to block bootloader again, I have to do it on china rom?
Click to expand...
Click to collapse
Yes you can install TWRP and change the ROM.
The normal reason to flash a Chinese fastboot ROM is when you have done something wrong and soft bricked the phone. But yes you would also do this if you wanted to lock the bootloader again.
Robbo.5000 said:
Yes you can install TWRP and change the ROM.
The normal reason to flash a Chinese fastboot ROM is when you have done something wrong and soft bricked the phone. But yes you would also do this if you wanted to lock the bootloader again.
Click to expand...
Click to collapse
Okay thanks, I wanted to make sure. Nobody would want to Brick a new phone
I was in the same boat. Just flashed the official China ROM via mi flash including bootloader relock. After I applied for an unlock the official way, waited a week to unlock the phone again and finally flashed twrp, magisk and mi-globe Rom.
Guido83 said:
I was in the same boat. Just flashed the official China ROM via mi flash including bootloader relock. After I applied for an unlock the official way, waited a week to unlock the phone again and finally flashed twrp, magisk and mi-globe Rom.
Click to expand...
Click to collapse
I think I will also choose this way and block bootloader again. It will be safer
Guido83 said:
I was in the same boat. Just flashed the official China ROM via mi flash including bootloader relock. After I applied for an unlock the official way, waited a week to unlock the phone again and finally flashed twrp, magisk and mi-globe Rom.
Click to expand...
Click to collapse
Wait, so you had the 'Global rom' model? Did they leave the phone associated with the Mi account originally? And where did you buy from?
Just curious because my 'Global rom' model K20 Pro arrives tomorrow. Unfortunately ordered the day before all this stuff came out :/
Sorry if this is a bit newby, but I ordered the same (K20 pro) from ali express, there is no way the global rom is official?
If it's not and the bootloader is unlocked, why is this a problem? Because the find my device won't be working? or is the security compromised if it is?
Is the global rom worse than the Chinese? And if the phone isn't disconnected form the Mi account they used to unlock the bootloader with, arn't I screwed?
Sorry for the salvo of questions..
SozzR said:
Sorry if this is a bit newby, but I ordered the same (K20 pro) from ali express, there is no way the global rom is official?
If it's not and the bootloader is unlocked, why is this a problem? Because the find my device won't be working? or is the security compromised if it is?
Is the global rom worse than the Chinese? And if the phone isn't disconnected form the Mi account they used to unlock the bootloader with, arn't I screwed?
Sorry for the salvo of questions..
Click to expand...
Click to collapse
At the moment there is no global version of the phone. So there is no official global ROM. The global ROM versions currently for sale are using a hacked/modified versions of MIUI. These versions are made by people unknown and could possibly contain malware, etc. which could compromise your security. Probably, the ROM will be OK, but you just never know.
Having the bootloader active unlocked isn't a problem normally and gives you the benefit of not having to wait 7 days. You can flash TWRP and install other ROMs with no problem.
But there are a couple of cases on these forums where people have had things go wrong whilst flashing a fastboot ROM using the Mi Flash Tool. They have ended up accidentally relocking the bootloader whilst also corrupting the system partition. Because they haven't unlocked the bootloader themselves originally, they are unable to unlock the phone again and can't install TWRP to install another ROM.
Some people are now choosing to flash an official ROM and relock the bootloader, to allow them to unlock the phone themselves with their own Mi account. So if they end up in the same position as above, they should be able to unlock the bootloader and easily restore the phone.
However some people, when restoring the phone to stock after messing up, have accidentally relocked the phone. When they've tried to go through the unlock process they have found that the phone is still linked to the sellers Mi account and they are unable to link it to their own account and so are unable to unlock it again.
If you never relock the bootloader, either accidentally or deliberately, then you will not have any problems. But if you end up needing to flash a fastboot ROM, then the Mi Flash Tool default option is to flash and relock, so it only takes a brief lapse in concentration to find that you've got a locked bootloader again. If this happens, I would guess that it's far more likely that you won't have any problems and you are able to unlock it again.
---------- Post added at 01:20 AM ---------- Previous post was at 01:18 AM ----------
Radzią said:
I think I will also choose this way and block bootloader again. It will be safer
Click to expand...
Click to collapse
Just be aware that this option also comes with risks. Occasionally some people have found that the phone is still linked to the sellers Mi account, they are then unable to ink it to their own account and so cannot unlock the bootloader again.

chinese rom with locked bootloader to global rom possible?

Hello all,
Yesterday I received a k20 pro from china with an unlocked bootloader.
I wanted to get rid of the spy/bloatware so i went and tried to install twrp to install another ROM, but for some reason TWRP flipped when i installed it (i think i forgot to turn off encryption) and just decided to stop working altogether. Recovery did not work anymore and so i was stuck in fastboot (bootlooping). After some stressfull googling i found out, the only way to get the phone working again is by flashing the (only) fastboot ROM, which was the chinese variant.
I was so stressed out, i forgot to change the flash option in xiaomi flash tool to "clean all" instead of "clean all and lock"(which is the default, fu Xiaomi).
So now my phone has a chinese ROM and the bootloader is locked.
So my question is:
Once i get the bootloader unlocked again (which will take 1 week hopefully), will i be able to install the global ROM (once it is released) or a better, a non-spying ROM?
Also, i tried debloating the chinese rom, but everytime i apparently debloat too much and the phone just stops working and i need to do a reset.
Does anyone have a proper list of xiaomi applications that are safe to remove (trough adb)? the ones i found remove too much.
Thanks in advance.
Yes, once you unlock your bootloader again, you can flash indian global firmware, which has less bloats, google apps and services included, and poco launcher.
For debloating cn rom, there is a tool here, I'll find and link.
May use this for debloating- https://github.com/Saki-EU/XiaomiADBFastbootTools
kibria.mgk said:
May use this for debloating- https://github.com/Saki-EU/XiaomiADBFastbootTools
Click to expand...
Click to collapse
Hi, this is the program that i've been using for removing the xiaomi apps, however when some of the listed apps are removed the phone won't be able to restart anymore and i have to do a reset.
For now, i manually removed all the removable spyware by hand and installed blokkada to deny communication to xiaomi servers. I don't dare to remove a lot of system apps trough adb anymore since i had to reset my phone 5 times already... i just want to use it now...
Just endure the pain until bootloader is unlocked again then move over to the Indian rom, its much more tolerable.
Angelina7 said:
Just endure the pain until bootloader is unlocked again then move over to the Indian rom, its much more tolerable.
Click to expand...
Click to collapse
there no mi 9t pro rom yet ?
dev-DaT said:
Hi, this is the program that i've been using for removing the xiaomi apps, however when some of the listed apps are removed the phone won't be able to restart anymore and i have to do a reset.
For now, i manually removed all the removable spyware by hand and installed blokkada to deny communication to xiaomi servers. I don't dare to remove a lot of system apps trough adb anymore since i had to reset my phone 5 times already... i just want to use it now...
Click to expand...
Click to collapse
This is the safest option. Whilst waiting for bootloader unlocking I just uninstalled anything that could be and disabled anything else that could be disabled. There were still many things I wanted to remove that could not be uninstalled or disabled, but decided I could live with them for a week.
After your week is up, you've got many options. If you like MIUI but not the bloat and spyware, then there are MIUI custom ROMs that remove the junk, xiaomi.eu ROMs being one of the biggest. Otherwise there are AOSP based custom ROMs that are stable enough to use.
Aimara said:
there no mi 9t pro rom yet ?
Click to expand...
Click to collapse
No not yet, we are all waiting for it, it should be released soon.
Robbo.5000 said:
This is the safest option. Whilst waiting for bootloader unlocking I just uninstalled anything that could be and disabled anything else that could be disabled. There were still many things I wanted to remove that could not be uninstalled or disabled, but decided I could live with them for a week.
After your week is up, you've got many options. If you like MIUI but not the bloat and spyware, then there are MIUI custom ROMs that remove the junk, xiaomi.eu ROMs being one of the biggest. Otherwise there are AOSP based custom ROMs that are stable enough to use.
Click to expand...
Click to collapse
Yeah i guess ill have to endure being tracked 24/7 for a week ... thanks for all your responses. I am happy to know i can just go back to custom rom after the bootloader is unlocked.
I just hope i don't **** it up like last time.
How long it is currently to wait for bootloader unlock approval?
dpdp73 said:
How long it is currently to wait for bootloader unlock approval?
Click to expand...
Click to collapse
7 days for me
Hello, I have a cruel doubt. I was really wondering if after I unlock the bootloader (I have a Chinese rom) doing Global installation I can lock the bootloader? Because you have this possibility and I believe we received normally correct updates, can anyone help me?
phkopp said:
Hello, I have a cruel doubt. I was really wondering if after I unlock the bootloader (I have a Chinese rom) doing Global installation I can lock the bootloader? Because you have this possibility and I believe we received normally correct updates, can anyone help me?
Click to expand...
Click to collapse
NO.
If you try and lock the bootloader with anything that is not the original region you will hard brick the phone.
If you have a Chinese phone, then you can only lock the bootloader when installing an official Chinese ROM.
I think only the account used to unlock the blootloader can relock and re-reunlock it.
If you lock the phone, you won't be able to unlock it again with another account.
It is just a safety mechanism from xiaomi.
ntmalol said:
I think only the account used to unlock the blootloader can relock and re-reunlock it.
If you lock the phone, you won't be able to unlock it again with another account.
It is just a safety mechanism from xiaomi.
Click to expand...
Click to collapse
You don't need an account to lock the bootloader.
Provided that there is not a Mi account linked to a phone, then anyone who has the phone in their possession can unlock it.
When people have bought a phone already unlock, then accidentally locked it, they have been able to unlock it themselves if the seller has already unlinked the phone from the sellers Mi account
Robbo.5000 said:
You don't need an account to lock the bootloader.
Provided that there is not a Mi account linked to a phone, then anyone who has the phone in their possession can unlock it.
When people have bought a phone already unlock, then accidentally locked it, they have been able to unlock it themselves if the seller has already unlinked the phone from the sellers Mi account
Click to expand...
Click to collapse
So basically it is possible, if one gets a k20 pro flashed with global rom, that if the seller forgets to remove his account from the phone, you're stuck using ONLY other roms? In other words, in order to relock the bootloader and install official chinese rom, you need to contact the seller and ask him to go on his mi account to remove your phone?
android2819 said:
So basically it is possible, if one gets a k20 pro flashed with global rom, that if the seller forgets to remove his account from the phone, you're stuck using ONLY other roms? In other words, in order to relock the bootloader and install official chinese rom, you need to contact the seller and ask him to go on his mi account to remove your phone?
Click to expand...
Click to collapse
Yes there has been a few cases on these forums where this had happened.
However, you can still use official MIUI ROMs, you can still flash the Chinese ROM and lock the bootloader. The problem then is that you cannot unlock the bootloader again if the phone it's still linked to another account.
If you buy a Chinese phone with a global ROM, why would you then want to flash a Chinese ROM and lock the bootloader? You would be better off just buying the phone still with the Chinese ROM and locked, if that's what you wanted.
People have had problems because they've been flashing an official ROM with the Mi Flash Tool and accidentally left the flash option to flash and lock. When flashing with the Mi Flash Tool you just need to remember to change the default flash option every time you use it.
If you never relock the bootloader, then you will never have this problem and can still use official MIUI.
Robbo.5000 said:
NO.
If you try and lock the bootloader with anything that is not the original region you will hard brick the phone.
If you have a Chinese phone, then you can only lock the bootloader when installing an official Chinese ROM.
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Click to collapse
Ok, thanks for clearing up my doubts.
---------- Post added at 02:01 PM ---------- Previous post was at 01:58 PM ----------
I actually have another one. Can I install bootloader-unlocked update pscotes in the global rom on k20 pro without losing files, or everytime I have to install full rom?
phkopp said:
...
I actually have another one. Can I install bootloader-unlocked update pscotes in the global rom on k20 pro without losing files, or everytime I have to install full rom?
Click to expand...
Click to collapse
I'm not sure what you're asking. I'm guessing pscotes is a typing error.
Packages*

Mi9t pro xiomi flash tool

https://mi-globe.com/download-xiaomi-mi-flash-tool-all-versions/
I came across this link and was wonder if anyone used this before. Do I need an unlocked bootloader to flash a rom with this tool the website doesn't give any information regarding the bootloader being locked or unlocked.
the answer is YES you need to be unlocked bootloader so you will able to flash another miui rom,,flash twrp..rooting..
Are the roms for the k20 pro compatible with the mi9t pro, from my understanding they are the exact same thing apart from one being a global variant.
Rohela said:
Are the roms for the k20 pro compatible with the mi9t pro, from my understanding they are the exact same thing apart from one being a global variant.
Click to expand...
Click to collapse
Yes, you can cross flash then with the Mi Flash Tool. Just make sure, when using the tool, you change the flash option at the bottom of the screen to 'clean all'. If you leave it on the default option it will try and lock the bootloader and cause a hard brick of the phone. You can only use the default option when flashing a ROM that is the same region as the phone.
Make sure if you flash a stock rom that it is the right one.
I flashed the wrong one and lost NFC but of course got it back flashing the global mi 9t pro rom.

[Question] re-lock boot loader

Mi 9t Pro global Rom Miui 10, android 9.
will flash K20 Pro india ROM miui 11, Android 10 fastboot.
why all recommend keeping bootloader unlocked?
i don't want the hassle of banking apps and use Magisk. so what's the problem here of re-lock bootloader after flashing the new ROM?
technical details are most welcome.
Locking bootloader with a different ROM region installed will brick your device. Unbricking will require further wait for bootloader unlock time or you'll need EDL method which I'm not very aware of how it's done.
Sent from my Redmi K20 Pro using Tapatalk
ishaqtkr said:
Locking bootloader with a different ROM region installed will brick your device. Unbricking will require further wait for bootloader unlock time or you'll need EDL method which I'm not very aware of how it's done.
Sent from my Redmi K20 Pro using Tapatalk
Click to expand...
Click to collapse
why locking bootloader with another region rom installed will brick my phone?
and what you mean by brick that it'll never boot?
i got below reply from reddit, what do you think about it??
You are flashing a different version of MIUI. It's not what a lot of people call a ROM (although you are technically correct) . It's not like if you flashed a third party ROM like Lineage or xiaomi.eu... You can relock the bootloader if you have an original xiaomi system and recovery and did not modify your bootloader through a rooting tool (such as having Magisk installed as they get installed and run through a procedure called k-exec that patches the bootloader instead of the system so the hack is unknown to the OS).
Bootloaders are locked to prevent tampering with such exploits. Magisk is not malware but malware and spying tools can be implemented in the same way.
When the bootloader is locked only a ROM and a recovery made by the company that makes the phone can run.
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Click to collapse
NaAZoOR said:
why locking bootloader with another region rom installed will brick my phone?
and what you mean by brick that it'll never boot?
i got below reply from reddit, what do you think about it??
Click to expand...
Click to collapse
I am not sure about that now. But it bricks because that's how Xiaomi have put. I may be wrong but if many people are saying the same then there should be a reason.
Sent from my Redmi K20 Pro using Tapatalk
With official ROM either Global MI, Global EEA or China, with Xiaomi MI Flahs tool you can block the bootloader without any problem.
If you do not usually change the rom, or to custom rom or recoverys custom, it is advisable to block it since you cannot download netflix from the play store and some bank applications mark errors. Otherwise you can unlock the bootloader.
The most important thing about keeping it unlocked is that you lose the equipment warranty.
And the benefit of having it unlocked is that you can change from rom or custom rom, and you don't have to wait for xiaomi time to unlock it again; but lose the warranty.
But you open custom possibilities.
thank you guys, but i really need to know what is exactly meant by hard brick?
is it not to boot again or what??
alanrochasmx said:
With official ROM either Global MI, Global EEA or China, with Xiaomi MI Flahs tool you can block the bootloader without any problem.
If you do not usually change the rom, or to custom rom or recoverys custom, it is advisable to block it since you cannot download netflix from the play store and some bank applications mark errors. Otherwise you can unlock the bootloader.
The most important thing about keeping it unlocked is that you lose the equipment warranty.
And the benefit of having it unlocked is that you can change from rom or custom rom, and you don't have to wait for xiaomi time to unlock it again; but lose the warranty.
But you open custom possibilities.
Click to expand...
Click to collapse
it will be india rom, is it safe to re lock with mi flash after flashing this rom??
also what is hard brick & why everyone keep telling mobile will be hard brick if i re lock bootloader after flashing (any) rom rather than the global rom it came with?
PHP:
NaAZoOR said:
it will be india rom, is it safe to re lock with mi flash after flashing this rom?? YES!!! As long as it is the rom for your model and it is official and you have not modified anything of the rom or the recovery
also what is hard brick & why everyone keep telling mobile will be hard brick if i re lock bootloader after flashing (any) rom rather than the global rom it came with?
Click to expand...
Click to collapse
With the Rom India I have not tried but if I have tried from Rom China to Global MI and vs, Global EEA to Global MI and vs. all oficial´s.
alanrochasmx said:
With official ROM either Global MI, Global EEA or China, with Xiaomi MI Flahs tool you can block the bootloader without any problem.
If you do not usually change the rom, or to custom rom or recoverys custom, it is advisable to block it since you cannot download netflix from the play store and some bank applications mark errors. Otherwise you can unlock the bootloader.
The most important thing about keeping it unlocked is that you lose the equipment warranty.
And the benefit of having it unlocked is that you can change from rom or custom rom, and you don't have to wait for xiaomi time to unlock it again; but lose the warranty.
But you open custom possibilities.
Click to expand...
Click to collapse
Hy!Are you sure that if I own an Chinese variant of k20 pro and if I relockmy bl I won´t brick my device by relocking it?I just unlocked it today and I plan to instal the EU rom and relock my bl.
Just to make it clear...
Chinese K20 Pro needs to have Stock Chinese rom if you want to relock the phone! Without Mods or anything. Just clean Chinese firmware!
The same for indian variant. Only indian firmware without mods.
Also for Mi 9T Pro! Stock rom without mods!
Even TWRP isn't allowed If you wanna relock the bootloader!
If you cross flash roms and relock the bootloader you will brick your device! Your phone won't boot! You will need to open the backcover and boot it into EDL mode and blablabla. There is a thread about that.
Can be found HERE!

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