How can i get unlock_bootloader.img again ? - Lenovo Zuk Z2 Pro Questions & Answers

Hi, i've flashed ZUI 1.9 with Qualcomm tools, to get Marshmallow firmware again and try LineageOS 13, but this ZUI version are locked my bootloader again !
I've tried on the bootloader website of Zuk to ask again the file who permit to unlock bootloader again, but i never receive the mail (tried with three different gmail adress and hotmail and msn and gmx...) ! :crying:
Tried to contact [email protected] about it, and nobody answering me !
Do someone have any idea for helping me ? i've many backup of my phone (TWRP), but there is no way to boot TWRP with fastboot when the bootloader is locked...

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What to do first when I receive the phone?

Hey everyone,
I was just wondering what I need to do when i receive the device. I am in Australia and the phone might be the Chinese model.
So is there anything I have to do with the phone to make it usable as I've heard you need to flash on the global ROM.
How do I properly set up my device for use?
Thanks
MrMoistWalrus said:
Hey everyone,
I was just wondering what I need to do when i receive the device. I am in Australia and the phone might be the Chinese model.
So is there anything I have to do with the phone to make it usable as I've heard you need to flash on the global ROM.
How do I properly set up my device for use?
Thanks
Click to expand...
Click to collapse
Not easy.To flash the global version miui,you need to unblock your boolloader, then download the global package,and flash it with the miflash.But to unlock the bootloader,you need a mi account and make a Application.
MrMoistWalrus said:
Hey everyone,
I was just wondering what I need to do when i receive the device. I am in Australia and the phone might be the Chinese model.
So is there anything I have to do with the phone to make it usable as I've heard you need to flash on the global ROM.
How do I properly set up my device for use?
Thanks
Click to expand...
Click to collapse
If you bought from a chinese-based online store, most likely your device has a fake ROM. To get rid of that ROM, you need to unlock bootloader. No matter if you want to flash an official ROM or unofficial xiaomi.eu. You can try to change ROM with MIUI Updater app, but most probably it will not work from a fake ROM.
To unlock bootloader you need at least a couple of things: a xiaomi account you can create here Mi Account -> account.xiaomi.com
After you create your MI account you need to request unlock here MI Unlock en.miui.com/unlock and wait several days to be approved for unlocking. In my case it took 4 or 5 days before I received an SMS of approval.
Then download MI Unlock app (Windows) and search a manual for unlocking device (you need to activate developer options).
In order to unlock bootloader you need a Chinese ROM (stable or dev) but If I'm not wrong all 'fake' devices come with a chinese-based ROM, otherwise wouldn't be a fake ROM?
After you achieve unlocking you can flash any ROM, Global or China, unofficial like xiaomi.eu, etc..
Flash global rom without unlocking bootloader
There is a way to flash global rom without unlocking bootloader using special USB cable that you can make yourself if you still want to do so i'll gladly show you how I did with my phone.
If you are tired and irked by MIUI, I would strongly recommend you to quickly apply for Bootloader unlocking permission on the official Miui site. Afterwards, unlock your bootloader and install official TWRP recovery and a ROM of your choice such as CM14.1. That way, you will be able to experience the true "openess" and magic of Android!
You can install CyanogenMod ROM, but unfortunately you will get no updates, since project has been discontinued on Dec 31 . Their successor is http://lineageos.org/ but there's nothing on their web yet.
Do create a MiAccount.. and do remember your security pattern... what ever you intend to do next do those two things
no need to unlock bootloader.
Xiaomi flash ROM came with 2 method.
you can flash not only from fastboot mode ( bootloader mode ) but also from edl mode ( QDloader 9008 mode ).
- fastboot method need to unlock bootloader.
- EDL method not need to unlock bootloader .
EDL method even can unlock bootloader with unofficial method

P10 Oreo - Boot problem

Hi
I have a BIG problem with my P10 (L29C432) on Oreo 365.
Tried downgrade to nougat through Firmware Finder but update failed. Now i have this warning at every reboot.
I have LOCKED bootloader (never rooted phone). And i cant get bootloader unlock code (website not working).
Also cant enter fastboot mode because of that error.
Is there anyway to RESTORE phone with locked bootloader? I have tried to flash previous firmware with sdcard method (hold power,+,- keys) but update fails everytime.
Is there other way to flash new firmware?
I can use phone but at every reboot i get this message?
If there is no other way to flash new firmware than with unlocked bootloader... Where to get code for unlocking bootloader?
Thanks.
Edit:
I can enter fastboot mode but my bootloader is locked.
you have to unlock bootloader by sending all the needed info per email.
you need to send them IMEI, model version, S/N number, and product id and request for bootloader unlocking code this email: [email protected]
next time read about how to rollback to nougat...
Thank you. So I need to unlock bootloader.
Will try to get code.
tomzzi said:
Thank you. So I need to unlock bootloader.
Will try to get code.
Click to expand...
Click to collapse
If you don't have your "product id", you can't have the code for unlock the bootloader :/
The "Product ID" is a code into the system info on android :s
I am waiting for code from Huawei. They will send me code in next days...
you can get product id on imei24. com by typing your imei.
Now i have another problem. I think phone is "dead" now. Unuseable.
Tried to root phone and now nothing works.
Phone does not recognize SIM card at all.
If I go into settings and system information there is no IMEI number?
Can i restore this?
Or need to take it to service center? Or dead phone?
send the device against wall. Buy another one and forget averything about rooting and unlocking bootloader. Its for your safety, trust me.
I have experience with rooting and flashing phones (Sony). Never had problem.
So there is no way to restore phone?
maybe in repair store. Never heard about bricked device without imei. You can still try to flash original firmware.

Mi8 Bootloader and Fashing questions

Hello everyone, I'm waiting my phone to arrive next week with unlocked bootloader and Official Global ROM (the phone itself is the Chinese version), but after seeing so many threads regarding bricked phones I got afraid I will brick mine too. So I want to ask a few questions and summarize all the things around the Bootloader and ROMs about MI 8.
1. How I can find if the phone's Bootloader is Unlocked for real or not, because i see there are some Fake Unlocks which is not good of course.
2. IF the Bootloader is really unlocked can I flash TWRP through fastboot like on all other devices with these commands:
fastboot flash recovery twrp.img
fastboot reboot
or there is another way to flash TWRP to Mi 8?
3. Can you flash a ROM to Mi8 using TWRP or only through Mi FlashTool? And again - is there something more special or unusual in flashing ROM to Mi8?
4. IF the Bootloader is Unlocked is it possible for the phone to RE-LOCK or getting into boot loop after updating through OTA or by Hard Resetting the phone, because I read here and there people had unlocked Mi 8, but after updating the phone through OTA or after hard resetting the phone they went into boot loop/-relocked. I'm not quite sure if I believe this, based on my previous experience with flashing phones, but who knows... so if someone can confirm or deny this, please answer.
Up
straightup said:
Hello everyone, I'm waiting my phone to arrive next week with unlocked bootloader and Official Global ROM (the phone itself is the Chinese version), but after seeing so many threads regarding bricked phones I got afraid I will brick mine too. So I want to ask a few questions and summarize all the things around the Bootloader and ROMs about MI 8.
1. How I can find if the phone's Bootloader is Unlocked for real or not, because i see there are some Fake Unlocks which is not good of course.
2. IF the Bootloader is really unlocked can I flash TWRP through fastboot like on all other devices with these commands:
fastboot flash recovery twrp.img
fastboot reboot
or there is another way to flash TWRP to Mi 8?
3. Can you flash a ROM to Mi8 using TWRP or only through Mi FlashTool? And again - is there something more special or unusual in flashing ROM to Mi8?
4. IF the Bootloader is Unlocked is it possible for the phone to RE-LOCK or getting into boot loop after updating through OTA or by Hard Resetting the phone, because I read here and there people had unlocked Mi 8, but after updating the phone through OTA or after hard resetting the phone they went into boot loop/-relocked. I'm not quite sure if I believe this, based on my previous experience with flashing phones, but who knows... so if someone can confirm or deny this, please answer.
Click to expand...
Click to collapse
1. You will see a lock icon under the kernel logo if it's unlocked.
2. Yep
3. I use TWRP to flash stuff to my Mi 8 SE, I doubt the Mi 8 is a magical exception
4. Not sure, don't even do a dumb thing like that, use Xiaomi.eu builds instead. I flashed a pure stock firmware once and it only overwrote TWRP with the stock recovery ( it became completely stock, simply put )
Thank you Marionette
Hello guys,
I am new to the forum and a proud owner of Mi 8 /dipper/. I read every post in this tread /and in many others/ and I have some questions:
1. Currently my device is on 8.8.9 eu rom so I would like to update to 8.8.16 eu rom. From settings I check for update and it shows "up to date". My options are that I can download the new rom, transfer it to the phone and from there either hit "choose update package" from settings or flash via twrp. What is the difference between the two choices? I read that if flash via twrp then I need to wipe dalvik/cache, but can I update via os settings and if "yes" do I need then to boot twrp and again wipe dalvik/cache?
2. My device came with unlocked bootloader so I presume it was unlocked with someone else account. If I decide to go china stable/stock for my phone/ and lock the bootloader, then will I apply and wait to unlock it again? If I download Mi unlock and hit "unlock", while the bootloader is unlocked /dont know is it possible/ will my account bind to the device?
Thank you in advance,
s7eVe90 said:
Hello guys,
I am new to the forum and a proud owner of Mi 8 /dipper/. I read every post in this tread /and in many others/ and I have some questions:
1. Currently my device is on 8.8.9 eu rom so I would like to update to 8.8.16 eu rom. From settings I check for update and it shows "up to date". My options are that I can download the new rom, transfer it to the phone and from there either hit "choose update package" from settings or flash via twrp. What is the difference between the two choices? I read that if flash via twrp then I need to wipe dalvik/cache, but can I update via os settings and if "yes" do I need then to boot twrp and again wipe dalvik/cache?
2. My device came with unlocked bootloader so I presume it was unlocked with someone else account. If I decide to go china stable/stock for my phone/ and lock the bootloader, then will I apply and wait to unlock it again? If I download Mi unlock and hit "unlock", while the bootloader is unlocked /dont know is it possible/ will my account bind to the device?
Thank you in advance,
Click to expand...
Click to collapse
You've already received answers to your questions? https://xiaomi.eu/community/threads/8-8-16.45718/post-437870
_katho_ said:
You've already received answers to your questions?
Click to expand...
Click to collapse
Partially I have received answer to my question but its never bad to receive a second opinion. I still don't know am I able to flash china stable, lock the bootloader and everything be okey /there won't be any bricks/. Then if I decide to unlock should I wait to unlock the bootloader and can I bind now my account to the device trough unlocking while its unlocked or smth like that?

Bricked k20 pro

Hello there,
So let me explain to you what happent to me.
1 week ago i received the notification telling me that i can update to android 10 with miui 10.4.8, so i did it and i don't know why when the phone rebooted it was stuck on start screen, infinitly loading.
I let it like this all the night, and then when i woke up it was still in the same state.
So i dedicated to flash my older rom, 10.3.5, but when i flashed it using fastboot rom the bootloader got relocked again and i had this message telling me "This miui version can't be installed on your device" in recovery
I can't unlock bootloader again because i need to add my mi account to miui (wich i have no access to), so i decided to use the EDL method, i contacted some people that have an verified miui account with EDL permission, i flashed 10.3.5 but problem is still here i made sure it was indian rom because my phone is india (raphaelin)
So here i am without a solution
Thanks in advance, i can pay if peope can help me
Use miflash and a stock rom. I've never had the bootloader relock itself through flashing.

Question Help with Mi11 Ultra bootloader unlock failed

Hello for everyone, I have a Mi11 Ultra Chinese version and tried to unlock the bootloader to be able to install a global rom or any other. During the unlocking process a failure occurred and the phone ran out of signal, when I try to make a call, radio off appears and does not execute the call. I have tried using fastboot rom with mi flash tool and gives the error antirolback message, I have tried rom of the forum xiaomi.eu, i have tried to unlock the bootloader again and gives the message for me to turn off the wifi and use the chip, however does not recognize the chip and do not know what to do. Could someone help me please, I no longer have any ideas on how to proceed. I thank you for your attention right now.
ghsiqueira1 said:
Hello for everyone, I have a Mi11 Ultra Chinese version and tried to unlock the bootloader to be able to install a global rom or any other. During the unlocking process a failure occurred and the phone ran out of signal, when I try to make a call, radio off appears and does not execute the call. I have tried using fastboot rom with mi flash tool and gives the error antirolback message, I have tried rom of the forum xiaomi.eu, i have tried to unlock the bootloader again and gives the message for me to turn off the wifi and use the chip, however does not recognize the chip and do not know what to do. Could someone help me please, I no longer have any ideas on how to proceed. I thank you for your attention right now.
Click to expand...
Click to collapse
If you are still stuck, try to install the fastboot EU ROM or install TWRP and flash the EU stable or weekly. With the Chinese version it requires you to connect with your sim to compare imea number and account phone number. The EU version doesn't ask. It might get you out of a fix.
Just be warned that if your phone was affected by the radio going off during any official proceedure, you may have corrupted your persist.img file. I'm not sure if there is any way back if you have other than may be an EDL reflash or a trip to a service center. If you are really stuck, go down the EU ROM first, then EDL before sending it off unless you can claim on its warranty.
Mine ask me today for 1128 hours to unlock bootloader; what go wrong ?
Pascal536 said:
Mine ask me today for 1128 hours to unlock bootloader; what go wrong ?
Click to expand...
Click to collapse
you need to use another app.... an older version should take only 128 hrs
012345678 said:
you need to use another app.... an older version should take only 128 hrs
Click to expand...
Click to collapse
That's not true standard is 168h. You can get more hours when you try to unlock more than 1 phone in a month.
Well...mine-just bought-is M11 lite 5G - 2109119DG. Same problem with bootloader unlock failure. Tricky-have 5 min to receive sms and go with the unlock. Didn't succeded, try again in 128h...really is no other solution to unlock bootloader?
adroeurope said:
Well...mine-just bought-is M11 lite 5G - 2109119DG. Same problem with bootloader unlock failure. Tricky-have 5 min to receive sms and go with the unkock. Didn't succeded, try again in 128h...really is no other solution to unlock bootloader?
Click to expand...
Click to collapse
No, u must wait
what if you create a new mi account and login with it and try to unlock again? anyone tried before?
Maibe if U put another sim. Even so, imei remains the same. I think phone data will be recognised by XI if U try to make another account.

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