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Yesterday, I used the Xiaomi Mi 9 SE Updater app to update my EMUI version. After downloading the update zip file (2.8GB), the app warned me that it would "install the update, start in recovery mode and will ask for my password as the file system was encrypted" (I don't remember the message exactly).

The phone rebooted and got stuck on the Fastboot screen for more than a hour.

enter image description here

After that I rebooted multiple times with different ways (hold power button, hold power button + volume down, and hold power button + volume up and down) but just after the reboot it gets stuck on the Fastboot screen again.

I tried using the Android platform tools to try to reboot it but the result is the same, always stuck on the Fastboot screen.

$ sudo ./fastboot devices
f6da2608    fastboot

$ sudo ./fastboot reboot
Rebooting                                          OKAY [  0.000s]
Finished. Total time: 0.351s

$ sudo ./fastboot reboot recovery
Rebooting into recovery                            OKAY [  0.000s]
Finished. Total time: 0.352s

Do you have any solution to fix ? If not, is it possible to do a factory reset ? I have backups for my data so no problem for me.

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  • On a windows computer, you can try using the MI flash tool to flash the firmware again
    – beeshyams
    Commented Dec 1, 2022 at 9:42
  • 1
    @beeshyams Thanks for the suggestion, I will try it!
    – Junior Dussouillez
    Commented Dec 1, 2022 at 9:46
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    I couldn't make it work. I downloaded the Fastboot ROM, run the program and stuff but when the device was not recognized apparently. Each time I clicked "Flash" my device shut down.
    – Junior Dussouillez
    Commented Dec 1, 2022 at 11:59
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    Oops.. Maybe someone else can suggest a way out. Maybe, just maybe it will boot normally if you let battery drain out completely and then try to power up after charging?
    – beeshyams
    Commented Dec 1, 2022 at 12:26
  • Thanks anyway! Yeah I though the battery trick might do it too. I'm currently turning it on, then a few minutes later it shuts down, I turn it on again and so on all day long until the battery's dead. We'll see.
    – Junior Dussouillez
    Commented Dec 1, 2022 at 12:52

1 Answer 1

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Download the SDK platform tools for the OS you have. Connect your device while in fastboot mode with your computer and run

fastboot devices

This should give you a result if your device is recognized. If your device does not show up make sure to install the proper drivers for it. Then download the official fastboot ROM for your device. Unzip it and there should be a file in there with a name like flash_all (bat or sh depending on your OS run the appropriate one). Guides like this one can help for more details

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  • 1
    Thanks for the flash_all script, I didn't see there was scripts embedded in the ROM file at first. Unfortunately I couldn't try it because I returned the phone to the shop (warranty was still active). If they can't fix it I will try this. Otherwise I will ask them what they did and post it here.
    – Junior Dussouillez
    Commented Dec 2, 2022 at 7:38
  • I got a refund because they couldn't fix it... Thanks anyway!
    – Junior Dussouillez
    Commented Dec 15, 2022 at 7:57

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