AntiRollback trigger if bootloader unlocked - Redmi K20 Pro / Xiaomi Mi 9T Pro Questions & Answe

Hi,
I have a question regarding the anti rollback feature. If anti rollback triggers while the bootloader is unlocked, will I be able to access fastboot or recovery (twrp), or will I have to go into edl via the test points?

GzgzONE said:
Hi,
I have a question regarding the anti rollback feature. If anti rollback triggers while the bootloader is unlocked, will I be able to access fastboot or recovery (twrp), or will I have to go into edl via the test points?
Click to expand...
Click to collapse
After unlock bootloader, you can use Twrp or Fastboot easily.

There is no anti rollback for our phone.

Kollachi said:
There is no anti rollback for our phone.
Click to expand...
Click to collapse
So, both Mi 9T Pro and K20 Pro have no ARB?
Still, even if so, it might get introduced, so I wanted to know if I unlocked the bootloader, would I be safe from having to use test points to enter EDL in case it got triggered.

GzgzONE said:
So, both Mi 9T Pro and K20 Pro have no ARB?
Still, even if so, it might get introduced, so I wanted to know if I unlocked the bootloader, would I be safe from having to use test points to enter EDL in case it got triggered.
Click to expand...
Click to collapse
You can't flash roms yourself in edl mode. You will need to find someone with authorized account.
Check this thread for more Infos.
https://forum.xda-developers.com/k20-pro/how-to/edl-flash-how-to-fix-hard-brick-t3968400

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?

Some questions about flashing ROM so I would not end up in EDL again.

Hello, I have a few questions about flashing rom just to make sure I wouldn't end up in EDL mode again. First, let me tell something. I have bought my K20 pro on Aliexpress which come with a firmware that mark as MI 9T pro with bootloader unlocked but without TWRP install. I have tried to flash Android Q beta though fastboot without using the option Flash & Lock but i was end up in locked bootloader and then i got it fixed through EDL mode by paying someone from Russia who i don't know the name. Later on, I got another bad luck again by upgrading my official Chinese firmware through OTA and then the phone suddenly shutdown in the middle of the process which break both my recovery and fastboot so i have to go through EDL again. So, my questions are:
1. If i flash anything such as magisk, viper, or upgrade my xiaomi.eu firmware through TWRP, will something like my second story occur again? Or, does flashing through TWRP will brick both recovery and fastboot in the same or similar case?
2. After EDL mode, bootloader was unlocked by default so, what can I do to bind my MI account with the device? Because in case it locked again, then I can use xiaomi bootloader unlock tools to unlock it. In the first story, the device come with bootloader unlocked, and after flashed Android Q beta, the bootloader was triggered and locked so then I tried to unlocked it but Xiaomi bootloader unlock tools told me that my account is not bind to this device.
3. If i flash magisk, then do i need to always re-flash it on every system upgrade(xiaomi eu firmware)?
supaea said:
Hello, I have a few questions about flashing rom just to make sure I wouldn't end up in EDL mode again. First, let me tell something. I have bought my K20 pro on Aliexpress which come with a firmware that mark as MI 9T pro with bootloader unlocked but without TWRP install. I have tried to flash Android Q beta though fastboot without using the option Flash & Lock but i was end up in locked bootloader and then i got it fixed through EDL mode by paying someone from Russia who i don't know the name. Later on, I got another bad luck again by upgrading my official Chinese firmware through OTA and then the phone suddenly shutdown in the middle of the process which break both my recovery and fastboot so i have to go through EDL again. So, my questions are:
1. If i flash anything such as magisk, viper, or upgrade my xiaomi.eu firmware through TWRP, will something like my second story occur again? Or, does flashing through TWRP will brick both recovery and fastboot in the same or similar case?
2. After EDL mode, bootloader was unlocked by default so, what can I do to bind my MI account with the device? Because in case it locked again, then I can use xiaomi bootloader unlock tools to unlock it. In the first story, the device come with bootloader unlocked, and after flashed Android Q beta, the bootloader was triggered and locked so then I tried to unlocked it but Xiaomi bootloader unlock tools told me that my account is not bind to this device.
3. If i flash magisk, then do i need to always re-flash it on every system upgrade(xiaomi eu firmware)?
Click to expand...
Click to collapse
1. In theory flashing with TWRP shouldn't touch the fastboot or recovery partitions, unless you choose to. If you know what you're doing, then flashing with TWRP is reasonably safe.
2. You could try flashing an official Chinese fastboot ROM and locking the bootloader, then link it to your account. Don't try and install anything else, live with the official Chinese ROM and go through the normal unlock process. Once you've waited and got unlock permission for the phone against your Mi account, then unlock and install the ROM of your choice along with anything else.
But this does come with a small risk that the phone is still linked to the sellers account.
3. I went straight from stock to a GSI, so not sure about eu ROMs. If they have an OTA process that downloads then installs via TWRP (similar to official LOS), then it's possible Magisk will re-install at the same time. Someone who uses eu ROMs will need to confirm what happens.
For anything else, you'll needed to re-install Magisk.
Robbo.5000 said:
2. You could try flashing an official Chinese fastboot ROM and locking the bootloader, then link it to your account. Don't try and install anything else, live with the official Chinese ROM and go through the normal unlock process. Once you've waited and got unlock permission for the phone against your Mi account, then unlock and install the ROM of your choice along with anything else.
But this does come with a small risk that the phone is still linked to the sellers account.
Click to expand...
Click to collapse
I believe it is a risky method because if the bootloader is locked the phone might brick again and I have to do EDL again too. I wish if there is a safer method, because I experienced EDL mode twice already and it is terrible and need to pay lot of money just to fix it. :crying:
supaea said:
I believe it is a risky method because if the bootloader is locked the phone might brick again and I have to do EDL again too. I wish if there is a safer method, because I experienced EDL mode twice already and it is terrible and need to pay lot of money just to fix it. :crying:
Click to expand...
Click to collapse
Flashing an official fastboot ROM in the Mi Flash Tool and selecting 'clean all and lock' "shouldn't" brick the phone. If you're on an official Chinese ROM, then going through the standard unlock process "shouldn't" brick the phone.
The biggest risk in doing this would be finding that the phone is still linked to the sellers account.
If you want to be able to unlock the bootloader with your own Mi account, should it get locked again, then this is your only option.
However, you could leave it as it is and just make sure you never lock it again.
Robbo.5000 said:
Flashing an official fastboot ROM in the Mi Flash Tool and selecting 'clean all and lock' "shouldn't" brick the phone. If you're on an official Chinese ROM, then going through the standard unlock process "shouldn't" brick the phone.
The biggest risk in doing this would be finding that the phone is still linked to the sellers account.
If you want to be able to unlock the bootloader with your own Mi account, should it get locked again, then this is your only option.
However, you could leave it as it is and just make sure you never lock it again.
Click to expand...
Click to collapse
I see. It's too bad to get an unlocked phone. I will need to be more careful next time buying a new phone.

MiFlash Pro

Xiaomi tool for flashing your Xiaomi/Redmi phones:
https://miflashpro.com/
It's better than the standard MiFlash. Because you can flash the phone even without unlocked bootloader or if you forgot PIN/fingerprint/pattern in order to reset. Also it can automatically download the firmware for you. However, it does not delete your Mi account data. You need to login with your Mi account in order to use the tool with all options.
In case you experience any problems with latest version under Windows 8 or 8.1, first install MiFlashPro oldest version and then update to new version.
cg730620 said:
MiFlashPro
Click to expand...
Click to collapse
Can this thing unlock bootloader and if yes, do I still need to wait the normal way waiting peroid from xiaomi when I request for unlocking the booloader?
nam108 said:
Can this thing unlock bootloader and if yes, do I still need to wait the normal way waiting peroid from xiaomi when I request for unlocking the booloader?
Click to expand...
Click to collapse
No, it will not unlock your bootloader.
It doesn't recognize my phone redmi 9C
I want to flash it

Strange MI Unlock error | BL locked and system destroyed

Hi Guys,
Everything went wrong today. At the end i went to the point where i myself locked bootloader with fastboot. Want to unlock it again but this strange error appeared:
https://imgur.com/qBNM4ah
Does anyone know what this means? Phone is locked, can only go into fastboot.
Same here. My dumbass thought it would be a good idea to lock the bootloader (don't ask why because I don't even know the answer). System is destroyed and can only boot to fastboot. No Mi ID associated with it.
KaiseRRUby said:
system destroyed
Does anyone know what this means? Phone is locked, can only go into fastboot.
Click to expand...
Click to collapse
system destroyed happens when you lock bootloader on Chines device with global ROM. You get it when you trying to boot in system?
g_seva said:
system destroyed happens when you lock bootloader on Chines device with global ROM. You get it when you trying to boot in system?
Click to expand...
Click to collapse
No. It's a global device. I have even put that **** in EDL mode and tried to flash the damn thing. EDL authentication failed. I have no clue what the do next.
kaydentc1 said:
No. It's a global device. I have even put that **** in EDL mode and tried to flash the damn thing. EDL authentication failed. I have no clue what the do next.
Click to expand...
Click to collapse
For EDL flash you need xiaomi authorized account, there is rumors that some Indians make EDL flash with remote connection and their authorized account for 12$. Try to search in google or if you have a xiaomi seller or official repair in your home town, check there how much it will cost you.
You sure you have a global version? Were you bought the phone? Was it with locked or unlocked bootloader and what ROM was on it? Because some sellers, mostly on aliexpress and similar, just unlock bootloader on Chines devices, flash a global ROM and call it global version.
From the image attached, it looks like someone used the Find Device feature and activated Lost Mode. Is the Mi account number shown yours?
g_seva said:
For EDL flash you need xiaomi authorized account, there is rumors that some Indians make EDL flash with remote connection and their authorized account for 12$. Try to search in google or if you have a xiaomi seller or official repair in your home town, check there how much it will cost you.
You sure you have a global version? Were you bought the phone? Was it with locked or unlocked bootloader and what ROM was on it? Because some sellers, mostly on aliexpress and similar, just unlock bootloader on Chines devices, flash a global ROM and call it global version.
Click to expand...
Click to collapse
Bought it from Amazon. It was global. I had to wait for about 7 days to unlock the 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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