How to Flash MIUI Fastboot ROM on Mi Max with Locked Bootloader

MIUI Fastboot Flashing

Flashing stock MIUI ROM through Fastboot is the first possible solution every MIUI user can do to fix a bricked Xiaomi phone. However, some recent Xiaomi devices require official unlocked bootloader in order to flash stock ROM using Fastboot method. There may be workarounds to do Fastboot-flashing without having to obtain official bootloader unlock permission but those would be risks if the doer conducted the proceed inappropriately. Now what if your phone is bricked or in bootloop state but you don’t have official permission from Xiaomi to unlock your bootloader? Well, there are two options you can undergo: First, you can apply for it and wait till your application is granted; Second, you can try this workaround.

This article will show you some required steps to flash stock MIUI ROM on Mi Max with locked bootloader so you can unbrick your phone faster – since you don’t have to wait for Xiaomi to grant you the unlocking permission. However, as I has mentioned above, this mechanism have some risks if you did it inappropriately. Therefore, please proceed with full caution. Neither nor Mitch002, the one discovered the trick, will hold responsibility of any damage on your phone as a result of following this guide. You have to firstly create full backup of your data or files if your phone is not in bricked state.

Why do you have to flash through fastboot?

  • If somehow your Mi Max phone is running tampered / unofficial MIUI ROM and you want to flash back to stock original ROM.
  • Your phone is bricked.
  • Or if your phone is in bootloop mode.
  • You just want to reset your phone completely.
  • And so on and so on – whatever your reason is.


  • Download MiFlash Tool Beta version.
  • Download MIUI Fastboot ROM package (.tgz file) into your computer. You can use either China or Global Stable and Developer ROM.
  • A Mi Max device.
  • A computer running Windows 64-bit system: You can use Windows 7, Windows 8, Windows 8.1, or Windows 10.
  • A USB Cable – just use the once comes with your phone.
  • Make sure your phone has at least 50% battery power remaining.

Also read : MIUI 7.5 Global Stable ROM for Mi Max 32GB (Hydrogen)Fastboot & Recovery Package.

How to Flash

Step 1 – Disable Windows Drivers Signature Enforcement on your computer. How to do it? Simply follow these sequence. You can do that by pressing Windows button + i on keyboard to reveal the Settings page. From there you can choose Update & Security >> Recovery >> Advanced startup >> Restart now. Wait a moment for your computer to restart. Next, go to Troubleshoot >> Advanced options >> Startup settings >>Restart. Once your computer restarts, now choose Disable driver signature enforcement which is option number 7. See the video below for more details :

Step 2 – Now install MiFlash Beta tool onto your computer.

Step 3 – Extract the MIUI Fastboot ROM (.tgz) you have downloaded. Use either WinRAR or WinZIP to extract it. Make sure you have all the files and and the images folder.

Step 4 – If your phone is still in normal mode, you may need to enable USB Debugging (Settings >> Additional Settings >> Developer Options >> Turn on USB Debugging). Of course you have to enable Developer Options first. However, if your phone is in bricked state, then I assume you have enabled it before.

Step 5 – Now you have to firstly boot your phone into Emergency Download Mode (EDL Mode). You can read and follow my previous guide : How to put Mi Max into EDL mode. Alternatively, you can also try this one :

  1. Turn off your phone completely.
  2. Launch up Mi Flash Beta on your computer.
  3. Plugin the USB cable into your computer main USB port. It means if you are using PC then the USB port is in the back of your PC (the one attached directly to the motherboard).
  4. Now grab your phone.
  5. Press and hold Volume Up (+) as well as Volume Down (-) buttons all together and then plugin another end of the USB cable to your phone while the buttons are still pressed. Alternatively if that also didn’t work: Press and hold Volume Up + Volume Down + Power buttons all together, connect it to USB cable (which still connected to PC), and then release the Power button at the first vibration. Wait for the device to vibrate for the second time and release both Volume buttons.

Step 6 – Assuming your phone is now in EDL mode and it is connected to computer, click the “Refresh” button on MiFlash tool. Your device should be displayed in the list of connected device. It will be recognized as COM3 or COM4.

Refresh Device MiFlash

Step 7 – Next, click the “Select” button and locate the folder of where you extracted MIUI Fastboot ROM in your computer.

Select Fastboot ROM

Step 8 – Select “Clean All” option in the button of the tool.

Select Clean All Flashing

Step 9 – Finally, click the “Flash” button and wait for the tool to finish its job.

Flashing MIUI ROM MiFlash Beta

Step 10 – Once done, You’ll see the status displayed as “Success“.

Flashed Successfully

Voila! Your device is now resurrected and it comes back to life. Enjoy!

If your device is not displayed when you hit the “Refresh” button, you may also try to firstly install Qualcomm QDLoader driver. One more thing, Mitch002 also stated that the same method would also work on MIUI Global Stable.

Have that worked successfully for your Mi Max? Do not hesitate to share your experience in below comment section.

  • Andika Harlan

    Nice info but on step 6, it showing com10 instead com3 or 4. i tried to proceed but flash wont work after that. can u help on this matter?

    • farieznur

      Have installed Qualcomm QDLoader driver?

      • phone pai soe

        yes i have. but still show com10

        • phone pai soe

          pls help

          • Eddy Mahendra

            me also showing com10 but the flashing process is just working fine

      • facts

        I also suffer this issue. I have installed the driver but MI Flash doesn’t recognize the phone in step 7. I have changed the COM port with unsuccessful results.

  • Mel Paulo Ramirez

    sir farieznur will this work with mi max 2/16 variant?

    • farieznur

      yes it will. Just make sure you use appropiate MIUI Fastboot ROM for your device

  • Zep

    Thank you, thank you & thank you very much for the write up. I read xiomi forum and it’s not clear enough or the help wasn’t there. Yours is clear and especially on the Driver signature side where you have to Off it, and for the download links very usefull.
    How ever you miss 1 step, The fastboot rom have to be extracted 2 times after it’s been extracted to .tar than you have to extract it 1 more time to a normal folder where it contain all the files.
    Another thing to make clear among the users is about the Com port. No matter what com port numbers you have it will still flash. I flash MIUI8 Global version successfully using COM port 10 and thru USB 3.0 port with Windows 10 64Bit.

    • rajkiran dhyani

      1) Hi can u tell is this method will unlock my bootloader
      2) after successful flash, is there any security issue
      I flash stock global stablem rom from this method already

  • Greg Ex
    Thank you!
    Miui 8 has been installed with your tips.
    NB: at step 6, i had COM20. First reboot take over 3min on mi Max 32/3 before showing MiUi 8 screen.

    Thanks again

    • oxide deep

      when result showing success did your mimax reboot automaticly or manualy with power button?

  • Zio68

    Work Great! My Mi Max (3/64) resurrected.
    Delivered new with a stable unofficial MIUI rom.
    MiPC Suite found a firmware update.
    After this update … Bootloop! Damn.
    Mi Max is unlocked… Sigh.

    I spend many days at PC. All procedure/tips (include yours) does not work.
    Today I reset to default my Surface3 PRO.
    And first of all try again your “how to”.
    Surface use COM10.
    So I think I have only driver problem/confusion on my PC.
    Thank you again.

    …And now before of all I wait to unlocking 🙂

  • Abhijit Karande

    nothing happened after success still phone is bricked and one more thing my bootloader is locked and i cant get into edl mode

  • Untame Able

    Fariez Nurkholiq, I have tried so many methods suggested by others but to no avail. Your method has brought me further than others. It is now currently FLASAHING for the first time! Many thanks ^_^ I hope my device will now connect to wifi!

    • Untame Able

      Flashing has been successful! I am now rebooting my device. It is taking longer than usual but i hear thats expected. Hoping my wifi will beable to connect..

      • Untame Able

        SUCCESS! I am now using Miui8 AND my wifi is working! Many thanks Fariez ^_^

  • jayanti

    google play not work i m sad

  • disqus_sysqjQptYv

    Thank You , you are awesome…

  • Success! Thank you

  • sai aung

    Nice. It is the best solution for me. Thanks farieznur. 100% Test Ok.

  • Eddy Mahendra

    Tying this now to flash my mi max 128GB… hope it’s work.. will update after flashing

    • Eddy Mahendra

      Success.. thank you very much