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Mi 6x converted unlock bootloader

Hi guys,
i bought a mi 6x, wich arrived converted with rom and recovery of mi A2. How can i unlock the bootlader and came back to miui ?

bluff01 said:
Hi guys,
i bought a mi 6x, wich arrived converted with rom and recovery of mi A2. How can i unlock the bootlader and came back to miui ?
Click to expand...
Click to collapse
How did you know it's a Mi6X?!?

A.Zain.A said:
How did you know it's a Mi6X?!?
Click to expand...
Click to collapse
It has not written "android one" on back cover, OTA updates fail and I bought it as a mi 6X. The problem is wich this device has bootloader locked, ARB v4, and A2 recovery. Also methods to unlock A2's bootlaoder fail.

bluff01 said:
It has not written "android one" on back cover, OTA updates fail and I bought it as a mi 6X. The problem is wich this device has bootloader locked, ARB v4, and A2 recovery. Also methods to unlock A2's bootlaoder fail.
Click to expand...
Click to collapse
Ok, sound like you bought it from unauthorized retailer.
From where did you get it?

A.Zain.A said:
Ok, sound like you bought it from unauthorized retailer.
From where did you get it?
Click to expand...
Click to collapse
Bangood

Yeah, seems like the same case here in my country, those sellers import the Chinese mi 6x and they install a fake rom in it to make it look like a global version :silly:
No worries though.
First, in order to unlock your bootloader you need to setup mi account into your device, but you can't with your current fake rom, therefore you need an official rom. Do you know how to install one?

I'm waiting for the guide too

My a2 does not go into edl even with the particular USB cable, I have the bootloader locked.

A.Zain.A said:
Yeah, seems like the same case here in my country, those sellers import the Chinese mi 6x and they install a fake rom in it to make it look like a global version :silly:
No worries though.
First, in order to unlock your bootloader you need to setup mi account into your device, but you can't with your current fake rom, therefore you need an official rom. Do you know how to install one?
Click to expand...
Click to collapse
I tried in several way to flash one, but noone works. In mi A2 recovery there isn't the entry "connect to mi assistant" mode.

bluff01 said:
I tried in several way to flash one, but noone works. In mi A2 recovery there isn't the entry "connect to mi assistant" mode.
Click to expand...
Click to collapse
1-Do you have Mi account?
2-Can you enter fastboot mode in your device?
The answer to these questions could be your answer:fingers-crossed:

bluff01 said:
I tried in several way to flash one, but noone works. In mi A2 recovery there isn't the entry "connect to mi assistant" mode.
Click to expand...
Click to collapse
sorry, man but i am afraid whoever sold you that was a complete bastard your gonna now have to open up your phone and force edl mode although on the plus side you can choose if you want mi a2 or mi 6x depends your choice over partition and stock rom etc, or you can take it to a service centre dont know

Shqip said:
sorry, man but i am afraid whoever sold you that was a complete bastard your gonna now have to open up your phone and force edl mode although on the plus side you can choose if you want mi a2 or mi 6x depends your choice over partition and stock rom etc, or you can take it to a service centre dont know
Click to expand...
Click to collapse
Sadly I know.
A.Zain.A said:
1-Do you have Mi account?
2-Can you enter fastboot mode in your device?
The answer to these questions could be your answer:fingers-crossed:
Click to expand...
Click to collapse
I have a MI account, but i can't associate it in Developer mode.
I can enter in fastboot mode.

I was thinking, and I got this creazy idea, what if you changed your imei number with a current mi 6x number that already associated with mi account. Creazy huh

There's some stolen Mi 6X, and they have arb (anti=4) and A2 roms, too.
It seems selling on Xianyu (闲鱼) or Taobao (淘宝).
It will trigger lost mode (maybe) when you back to stock MIUI.
If you can, suggest to perform refunding.

FInally I bricked the phone then i unbrick it and i installed the MIUI.

bluff01 said:
FInally I bricked the phone then i unbrick it and i installed the MIUI.
Click to expand...
Click to collapse
How!, what did you do?

A.Zain.A said:
How!, what did you do?
Click to expand...
Click to collapse
I don't known why, the system found the upgrades and prepared the installation (usually this step fails) then appeared the message "reboot to install". After I rebooted the phone, it was bricked so i followed this guide (https://en.miui.com/thread-3811342-1-1.html) to unbrick and flash an official ROM.

mi a2 appears as mi6x on pc

my mi a2 appears as mi6x on pc. Is there a way to correct that?
The phone was unlocked and now I locked the bootloader (both critical and oem)

giannis_25 said:
my mi a2 appears as mi6x on pc. Is there a way to correct that?
The phone was unlocked and now I locked the bootloader (both critical and oem)
Click to expand...
Click to collapse
I think it is driver related issue. Deleting every driver about android devices and reinstall might fix it. But it is nothing serious my converted mi a2 still shows as mi a2.

you have miui installed? you've converted it to 6x then

reinstall drivers and fix it!

Mine shows 6x as well, is there a problem if I stay like this? Or it is just name and nothing special

ReUnlocking converted A2 (6X)

I have a converted A2 (+ARB 4), with UNLOCKED bootloader.
I read somewhere if you relock the BL , you will not able to UNLOCK it again ever after! (is it true?)
and other thing: If it try the MIUI BL Unlocker Official Application to unlock my device (even when it is still unlocked) what could be happen? (I've just followed the steps till the warning msg: "Unlocking Bootloader will erase user Data" ). (I read somewhere else that for unlocking miui devices you need to submit the request and you need to wait for a long time to get the code, and I was going to get the code for a case of necessity in future.)
I need to know how far I can play with these stuffs on my devices and left a practical way to recover a Bricked phone. ( I consider even TEST POINT as a practical option [tried once and it is damn easy and fun ] )

Im sorry bro but the actual model and serial code of your phone is a A2.And that means you probably wont unlock it it will give a hardware error.But pls try it and report.Dont worry there will be a fix!!

Tech_jetoncesaj said:
Im sorry bro but the actual model and serial code of your phone is a A2.And that means you probably wont unlock it it will give a hardware error.But pls try it and report.Dont worry there will be a fix!!
Click to expand...
Click to collapse
If it locked again my BL, what would be the solution? I didn't find any.

the mi unlock app requires a mi account with unlock permissions (account! not phone)
if you try to unlock an unlocked a2 you should either get unsuported - it's meant for miui devices - or already unlocked.

The app first checks the account and passes to further steps, then recognizes my phone, and warns me about wiping Data. ( At this step I declined and closed the app)
Your hypothesis seems correct, but if in any circumstances I would be left with relocked converted A2 , ist there any chance to reunlock it again?

that's why the test point method exists, for locked that you try to fastboot flash

I tried, and it just says: Device Unlocked, no need to reunlock again!
So now is it safe to lock my bootloader and try the app again?

if you lock the bootloader via fastboot commands it wont boot any more.
only way to safely lock is with miflash and you cannot miflash a wayne miui on a converted a2. it will see that it's the jasmine.
if you miflash the a2 fastboot rom it will relock ok - if the flashing works...might not cuz of the arb - but you wont be on miui any more.
what are you trying to do anyway?
i think what you dont understand is the unlock on miui and android one are the same end result but different steps. for miui you godda use the mi unlock, for and1 its just the dev options switch

laviniu_c said:
if you lock the bootloader via fastboot commands it wont boot any more.
Click to expand...
Click to collapse
So if I run the command and re-lock it by Fastboot, how can I re-unlock it again?
laviniu_c said:
only way to safely lock is with miflash and you cannot miflash a wayne miui on a converted a2. it will see that it's the jasmine.
if you miflash the a2 fastboot rom it will relock ok - if the flashing works...might not cuz of the arb - but you wont be on miui any more.
Click to expand...
Click to collapse
So do you mean there is no safety way to re-lock a converted A2 which runs MIUI ?
(and If I had a Banking app which needs a Locked BL to work, there will be no chance to run it at all?)
laviniu_c said:
what are you trying to do anyway?
Click to expand...
Click to collapse
As I said I want to know all the aspects of practical ways to deal with my phone, right now I am totally happy with it, but actually the opportunity of dealing with all these technical stuffs convinced me to buy this phone.
laviniu_c said:
i think what you dont understand is the unlock on miui and android one are the same end result but different steps. for miui you godda use the mi unlock, for and1 its just the dev options switch
Click to expand...
Click to collapse
I've heard that some ROMs may re-lock the phone, since then I would like to know if in any circumstances I would be stuck on that situation how can I re-unlock my phone.

any official miui rom that has the firmware folder in it might do it for example, so will bad ports....
try to use the magisk hide options to fix the banking app, add it to the list of apps for which it specifically hides root. add also the google services and make sure you pass the safetynet tests and your device shows as certified in the playstore settings. i think there were some modules to fix the bl check

laviniu_c said:
any official miui rom that has the firmware folder in it might do it for example, so will bad ports....
Click to expand...
Click to collapse
So lets assume it has been happened, what would be the procedure to rescue my phone? since as you said if the BL locked again it will not boot to OS.
laviniu_c said:
try to use the magisk hide options to fix the banking app, add it to the list of apps for which it specifically hides root. add also the google services and make sure you pass the safetynet tests and your device shows as certified in the playstore settings. i think there were some modules to fix the bl check
Click to expand...
Click to collapse
I would'nt like to root the phone, isn't there any other option?

if you lock the bootloader with any kind of non official rom for your phone (i.e. jasmine_sprout) which in your case is android one it wont boot. the end. only way out of that is the edl mode and miflash. that's the basic difference between locked and unlocked, it checks what os it loads and it makes sure the loaded os is the official rom for the phone. converting the a2 means it needs to be unlocked and you load a rom that's a ported miui10 from wayne to jasmine_sprout. if you flash the full rom, that has the locked bootloader from wayne which will fail to start since:
1 - the phone still isnt wayne
2- the rom isnt quite the official one (since it's renamed to work on jasmine)
3 - even if the phone was fully wayne, you dont really want the official mi 6x rom since that's china only. i.e. no google services
the only unknown in all this is the ARB, but edl should ignore that.
somehow i was under the impression you already have magisk (root/hide) up and running on the converted miui 10. yes, there are good miui 10 ports (for example xiaomi.eu) that give you the miui experience on a2 except they will never have the full ota support that the official rom has.
my advice? stick to the stock a2 rom. locked and full stock. the moment you need to start experimenting is when the android one support stops OR if you really want root.
if you wanted miui and you're outside china, mi 6x is still NOT the way to go. cuz it doesnt have an official global rom anyway. i dont get why everyone is jumping through hoops to get unofficial roms installed with stock support available.

laviniu_c said:
if you lock the bootloader with any kind of non official rom for your phone (i.e. jasmine_sprout) which in your case is android one it wont boot. the end. only way out of that is the edl mode and miflash.
Click to expand...
Click to collapse
So please consider these situations:
The phone is A2 converted to 6X &
The BL has been re-locked &
ARB 4 has been triggered
how can I use EDL mode to unlock it?
(I think miflash would not help because the LOCKED BL and the phone is actually A2)
(I think also Fastboot wont be able to unlock it since it is A2 Converted to 6X)
laviniu_c said:
yes, there are good miui 10 ports (for example xiaomi.eu) that give you the miui experience on a2 except they will never have the full ota support that the official rom has.
Click to expand...
Click to collapse
I'm afraid but I didt't get the point, now every week I receive Pie beta updates (besides there are stable versions too) which actually stable enough, almost Bug & Lag Free (it differs Rom to Rom, but believe me it is COOL ) , and by PitchBlack you can use direct update. (I prefer to install it by myself since I LOVE TWRP & its child PB). so what exactly we miss of original OTA service of XIAOMI?
laviniu_c said:
my advice? stick to the stock a2 rom. locked and full stock. the moment you need to start experimenting is when the android one support stops OR if you really want root..
Click to expand...
Click to collapse
But I think it wouldn't be an option for who has triggered ARB4! isn't it? (I read when you got ARB4 you must forget AndroidOne! even TestPoint won't help)
laviniu_c said:
if you wanted miui and you're outside china, mi 6x is still NOT the way to go. cuz it doesnt have an official global rom anyway. i dont get why everyone is jumping through hoops to get unofficial roms installed with stock support available.
Click to expand...
Click to collapse
Again I didn't get what do you mean, could you please explain it a bit more? (since my current MIUI 10.4 has almost everything)

http://bigota.d.miui.com/V10.0.2.0....0.PDIMIFJ_20181206.0000.00_9.0_02b8deeb6d.tgz this should work with the testpoint/edl method and miflash. (unless arb does something to stop it)
there's a few problems with your approach.
1) not official. any time the guys maintaining the custom rom can decide to stop producing it.
2) all work into these custom roms is voluntary. are they sometime better? sure, never said they werent but again, xiaomi/google/android have far far more resources at their disposal and while the phone is under the official period it will be maintained.
3) did you bother to read the first lines in any custom rom? they take 0 responsibility for whatever happens to your phone. they do not intend to break it, but they dont have to support you if you're in trouble either. if you dont have a valid warranty, that's understandable, you don't lose anything. but guess what? there are official vendors for xiaomi all over the world, offering official warranty. that holds as long as you're on STOCK.
4) though most custom roms are well intended, there is nothing assuring you there's nothing inside there that you dont want installed. you move your trust from xiaomi/google/android (which you can hold accountable) to whoever made that rom (who just carpet say, it's your phone you're doing the flashing, anything happens you're on your own). in most cases those devs don't mean harm, but they could and there's nothing to stop them (and they would never put in the hours of work if there was accountability for their action - i perfectly understand them. it's sortof like, i can try to do this, but because my work is not paid for by the end user they do not have any hold over me. it's correct and yet at the same time it's very very dangerous.). ever seen a custom miui built by a shop? i have, it's packed full of junk, bugs and malware. another thing here is testing. the official rom goes through a bunch of tests/beta versions. not saying it's perfect but it's better then the "known bugs: you tell me". custom rom devs cannot do it any other way, they dont have the time to test or the team to test.
5) the official devs don't have this option, they have a job and do it. it's a completely different approach.
this is not a rant against custom rom devs, i understand them 100%, they're trying to help. what i'm saying is there's always 2 sides to each story. there's no right or wrong, there's just what's best for each user. some of us will want the safe and easy way of the stock roms. some will want custom roms. in the end everyone is doing what they choose with their phone.

laviniu_c said:
http://bigota.d.miui.com/V10.0.2.0....0.PDIMIFJ_20181206.0000.00_9.0_02b8deeb6d.tgz this should work with the testpoint/edl method and miflash. (unless arb does something to stop it)
Click to expand...
Click to collapse
I think it will not work, the Actual duty of ARB4 is to preventing you to use these things! as much as I know after ARB4 you have two options: MIUI 10 or custom ROMs such as Havoc or so, for AndroidONE we need to wait a version of AndroidONE which be compatible with ARB4! otherwise flashing STOCK AndroidONE will simply brick your phone! THE whole IDEA of this THREAT is this!
And BTW as much as I know XIAOMI.EU is cooperating now with the XIAOMI ! besides we do not keep a phone for a whole life time, 2-3 years of supports would be far enough. and they do offer it right now!
and I would like to lock the BL for further security reasons but it seems to be impossible so far otherwise someone suggests a practical way for it.

I guess you need to contact me.
sz.hatef said:
If it locked again my BL, what would be the solution? I didn't find any.
Click to expand...
Click to collapse
Hey its not very good to talk here in xda.We can try some methods!
Chat with me in telegram.
 @blackgryphon1
Dont worry about brick,bcz im the only one who can unbrick,downgrade a xiaomi phone even if its arb4.
Feel free to contact me.
Also join my group i will be there too.
Since i cant post links,search this on telegram <<its my group>><<iT HAS A BLACK PHONE WALLPAPER AND IT HAS 86 MEMBERS!
Mi A2 & Mi 6X

Tech_jetoncesaj said:
Hey its not very good to talk here in xda.We can try some methods!
Chat with me in telegram.
@blackgryphon1
Dont worry about brick,bcz im the only one who can unbrick,downgrade a xiaomi phone even if its arb4.
Feel free to contact me.
Also join my group i will be there too.
Since i cant post links,search this on telegram <<its my group>><<iT HAS A BLACK PHONE WALLPAPER AND IT HAS 86 MEMBERS!
Mi A2 & Mi 6X
Click to expand...
Click to collapse
Just as I said, I would like to know the possible ways, currently I haven't any problem, could you explain it a bit , how could it possible to reunlock my BL if it get locked on MIUI?

ahem.
There is NO way to unlock an A2 device that has been converted to an 6X with ARB anti 4.
Your bootloaders are important in this case (xbl.elf and abl.elf). ARB and bootloader status is also managed here.
If you are using A2, with 6X system without ARB anti 4, that phone uses A2 bootloader. So if you lock your bootloader, it will brick to fastboot (The system has been destroyed / Press any key to shutdown). EDL will still accept any flashes without authentication. You may or may not be able to unlock it again through fastboot.
If you are using A2, with 6X system and firmware with ARB anti 4, that phone uses 6X bootloader. So if you lock your bootloader, it will brick to fastboot (The system has been destroyed / Press any key to shutdown). EDL will not accept any flashes without authentication*. You cannot unlock the phone through fastboot**.
*There is a workaround to this but you need to open your phone's back.
**Because MIUI devices need Mi Unlock to be unlocked, and Mi Unlock wants you to log in, and the system is not accessible, your phone will stay bricked.
You can still unbrick the phone with the above workaround, but you will be stuck with China MIUI and won't be able to unlock your phone's bootloader even if you logged in because your phone is not registered on Mi Unlock database (since Android One devices do not need/use Mi Unlock because of Google's enforcements).
Too long, didn't read?
Do not attempt to lock your phone. Even if you are on fully stock with your phone's own firmware. Locking is extremely risky due to the fact that even unlocking the bootloader corrupts the system integrity in some way.

Letzen said:
ahem.
There is NO way to unlock an A2 device that has been converted to an 6X with ARB anti 4.
Your bootloaders are important in this case (xbl.elf and abl.elf). ARB and bootloader status is also managed here.
If you are using A2, with 6X system without ARB anti 4, that phone uses A2 bootloader. So if you lock your bootloader, it will brick to fastboot (The system has been destroyed / Press any key to shutdown). EDL will still accept any flashes without authentication. You may or may not be able to unlock it again through fastboot.
If you are using A2, with 6X system and firmware with ARB anti 4, that phone uses 6X bootloader. So if you lock your bootloader, it will brick to fastboot (The system has been destroyed / Press any key to shutdown). EDL will not accept any flashes without authentication*. You cannot unlock the phone through fastboot**.
*There is a workaround to this but you need to open your phone's back.
**Because MIUI devices need Mi Unlock to be unlocked, and Mi Unlock wants you to log in, and the system is not accessible, your phone will stay bricked.
You can still unbrick the phone with the above workaround, but you will be stuck with China MIUI and won't be able to unlock your phone's bootloader even if you logged in because your phone is not registered on Mi Unlock database (since Android One devices do not need/use Mi Unlock because of Google's enforcements).
Too long, didn't read?
Do not attempt to lock your phone. Even if you are on fully stock with your phone's own firmware. Locking is extremely risky due to the fact that even unlocking the bootloader corrupts the system integrity in some way.
Click to expand...
Click to collapse
Thanks a lot, it explains everything and totally sounds right to me,
Just couple questions:
so in any circumstances it could be again usable just with a Chinese ROM, and so there will be no way to install Google Play on it, since there will be no custom recovery , no root accessibility , ... , It will be for ever with a Pure Chinese ROM (which practically would be unusable for us). Am I right?
Considering above situation, sending the device to a Xiaomi Center could help us to get back to any kind of global ROM (AndroidONE / MIUI) or not?
Right now I am totally happy with Xiaomi.eu MIUI BETA roms, no need to switch to other projects, I need to know is there any chance to stuck with a locked BL while attempting the new Beta ROMs? I use PitchBlack to flash new ROMs every week. Or if I want to ask it in short: How to prevent to get a Locked BL?
Thanks a lot again.

sz.hatef said:
Thanks a lot, it explains everything and totally sounds right to me,
Just couple questions:
so in any circumstances it could be again usable just with a Chinese ROM, and so there will be no way to install Google Play on it, since there will be no custom recovery , no root accessibility , ... , It will be for ever with a Pure Chinese ROM (which practically would be unusable for us). Am I right?
Considering above situation, sending the device to a Xiaomi Center could help us to get back to any kind of global ROM (AndroidONE / MIUI) or not?
Right now I am totally happy with Xiaomi.eu MIUI BETA roms, no need to switch to other projects, I need to know is there any chance to stuck with a locked BL while attempting the new Beta ROMs? I use PitchBlack to flash new ROMs every week. Or if I want to ask it in short: How to prevent to get a Locked BL?
Thanks a lot again.
Click to expand...
Click to collapse
does flashing a MIUI.eu beta ROM without deleting the firmware folder lock the bootloader ?
what's the benefit from not deleting the firmware folder?
i'm using a converted MI A2
thanks

I see a lot of people with bricked devices, what precautions should I take?

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

[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.
Click to expand...
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!