Xiaomi Redmi 4 Prime/Pro unlock Bootloader ( Official way )

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qaz.xc

Senior Member
Apr 13, 2011
211
22
How do you flash a rom with the locked bootloader? do you mind guide me with the steps?


I did say how, but i used the wrong term, i didn't flash it, i used the "Updater" app to update to the latest Global Stable, then i factory reset'd it.

I see you're from Portugal, zwame forum has a nice topic on this ;)
 

vendetta17

Senior Member
Sep 27, 2016
107
16
sorry if i post in the wrong place. can i please have a method to install the latest china developer rom on a locked bootloader redmi 4 prime? the updater method aint working for me . thanks in advance.
 

vendetta17

Senior Member
Sep 27, 2016
107
16
i installed latest china developer rom because i wanted to unlock the device. now i want to install the global stable rom . how should i do it ?
 

alreadyregistered

Senior Member
Jan 17, 2016
1,014
203
Lots of people do. It would allow them to take backups with TWRP and install supersu. It's probably also a good idea to unlock early so that they have the option of changing to a custom rom later.

Yes. I always recommend to do it, but sometimes it's too hard for certain users. I'm not saying that's in this case.:)
But twrp will broke OTA updates.. so if sb wants it...
 

Gawall

New member
Feb 13, 2017
1
0
Hi guys, could you please help me? I have got a new Xiaomi Redmi 4 Prime but I set a gesture screen lock, for some reason the gesture didn't work (I would swear I was connecting proper dots) and now the phone is locked. Is there a way to reset?
I was googleing but my Volume Up + Power Button combination brings up a menu with Light Test, Audio Test, Hardware Information, Chinese/English option, Download, Recovery, Fastboot and Shut Down, there is no Swipe and Reset. Not sure what to do...
 

recharged20

Senior Member
Mar 26, 2016
109
17
Hi guys, could you please help me? I have got a new Xiaomi Redmi 4 Prime but I set a gesture screen lock, for some reason the gesture didn't work (I would swear I was connecting proper dots) and now the phone is locked. Is there a way to reset?
I was googleing but my Volume Up + Power Button combination brings up a menu with Light Test, Audio Test, Hardware Information, Chinese/English option, Download, Recovery, Fastboot and Shut Down, there is no Swipe and Reset. Not sure what to do...

Cant you go through recovery and factory reset your miui again?
 

kazekiri

Senior Member
May 11, 2016
428
176
Hi guys, could you please help me? I have got a new Xiaomi Redmi 4 Prime but I set a gesture screen lock, for some reason the gesture didn't work (I would swear I was connecting proper dots) and now the phone is locked. Is there a way to reset?
I was googleing but my Volume Up + Power Button combination brings up a menu with Light Test, Audio Test, Hardware Information, Chinese/English option, Download, Recovery, Fastboot and Shut Down, there is no Swipe and Reset. Not sure what to do...

Are you unlocked? If you have TWRP installed, hitting recovery on that menu will go to TWRP.
 

luzair

Senior Member
Jan 4, 2015
79
4
How can I root my Xiaomi Redmi 4 (2GB RAM, 16 GB ROM) version?
I would like to have SuperSU in it.
Please advise.
 

sas_sas

Senior Member
Sep 13, 2007
933
96
İzmir
I have unlock failure too..
Redmi 4/Prime and v7.3.9 China Dev rom .
I tryed with the three different version of MiFlashUnlock app..
 

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    First things first.
    I have too low amount of posts to post in dev sections so its there.
    None of described software belongs to me. And im not responsible for damages.

    !!! MI FLASH TOOL BELOW !!!
    http://en.miui.com/unlock/download_en.html


    Okay so me and probably others have/had problems with unlocking your Xiaomi Redmi 4 Prime.
    These are simple steps to succes.

    what is needed: Redmi 4 pro, ADB drivers

    1. Sign to Xiaomi and apply for unlocking http://en.miui.com/unlock/
    It is important to add correct data.

    2. Connect to your Mi account on the device and enable Find Device option under Xaiomi cloud
    if it is done correctly u will be able to find ur device at https://i.mi.com/

    3 Wait for permission u will receive SMS message.

    4. When permission is aquired and device is connected to Mi Cloud we have to try to unlock the device.

    5 . Download Mi Unlock software ( added to post up there )

    6 .Enable developer settings
    System info -> couple of clicks on MiUi version
    Back - > more settings -> developer settings - > Enable OEM unlock

    7. Reboot to fastboot ( Vol down + power ) till some (russian?) bunny appears

    8. Perform unlock from Mi Unlocker and press
    Left button
    enter Login(email) and password to mi account
    Connect the phone and press the button !

    9 Reboot. You should be done Congrats !

    You can install miui global now or any other rom. to Perform you have to :
    1. Boot to fastboot
    2.Download Brigudav Recovery https://forum.xda-developers.com/redmi-4-prime/development/recovery-twrp-3-1-1-2-brigudav-t3656372
    3.connect the phone
    4. in console window type: fastboot flash recovery RECOVERYNAME.img
    5.Boot to recovery and install the rom

    Happy flashing !


    Hard brick ?
    Thanks to Butcher33 solution !
    this video
    https://www.youtube.com/watch?v=j27x5iJSS40
    solved the day! Big thanks to the author!
    1
    Hi
    I have recently purchased a Redmi 4 Prime phone that came with the vendor rom and I wanted to flash the latest china dev rom, but am stuck in bootloop. cant enter DL mode, but fastboot is OK. unfortunately none of the adb commads work, the phone is recognized under "fastboot devices" but not under "adb devices". I have tried the fastboot2edl v2 method but is goes straight into bootloop. can you please suggest what to do and help me out?

    Try to turn it off and press volume down + up and power until the LED flashes red and connect USB - it should be recognized as Qualcomm ******

    If not, then build your own deep flash cable or order one on ebay or something... - with that u can reach the DL mode on nearly every Qualcomm device
    1
    this video
    https://www.youtube.com/watch?v=j27x5iJSS40
    solved the day! Big thanks to the author!
    1
    Finally got my unlock permission and I think I did everything correctly but I still get this error msg :crying:
    glRAJpD.png

    And trying with the older unlocker linked in this thread:
    HkXru2g.png
    1
    Then why you say in the unnofficial way this "Warning do not flash xiaomi.eu global or any other unofficial rom this way !".
    It's something new what you say?

    Yes, 4pda patched bootloader appeared after fastboot oem unlock-go solution.