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Questions tagged [fastboot]

fastboot is a tool that comes with the Android SDK. It can be used to manipulate the partitions of your Android device when booted into the bootloader. DO NOT USE this tag for Ember FastBoot related questions.

fastboot is a tool that comes with the Android SDK. When your Android device is booted into the bootloader and connected to a computer over a USB connection it can be used to manipulate the partitions of your Android device. It has various functions including

  • flashing images to different partitions
  • erasing the data on different partitions, and
  • completely reflashing your device from an update.zip file

It is a powerful tool that used incorrectly can damage your Android device or completely wipe all of the data from it.

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Can't flash my Android device with custom ROM using fastboot, (remote: file too large)

My android device (Huawei Y6 2018 ATU-L21) is already unlocked and in fastboot mode, I followed this guide, but when I type fastboot flash -S 256M system image.img, this happens: C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash -S 256M…
Koala Koala
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Why would Android Tools fastboot NOT recognize a device, but ADB does?

On Nvidia ShieldTV Android Tools fastboot NOT recognizing a device, but ADB does? Trying to execute Fastboot commands from windows PC to a Nvidia Shield TV via USB. I am having issues on windows 10 getting fastboot to recognize shield TV. Wondering…
Dave Turner
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Unlock android bootloader without OEM unlock on

I have a Google Pixel 4XL that I want to have the bootloader unlocked on to install stuff on it. The OEM Unlocking option is greyed out in the system developer options menu, but I would like to know if there is a way to manually unlock the…
Matthias Lee
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Fastboot oem: command failed

I wanted to install a custom rom on my Xiaomi Mi A3, so I had to install the twrp. I enabled oem unlock from the developer settings of the phone and rebooted into bootloader mode, but when I ran the command "fastboot oem unlock" it gave me as a…
Riccardo Zampieri
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enable MTP in a fastboot mode

I want to unlock bootloader on realme 7. I enabled developer options, disabled OEM lock and turned on usb debuging. But there is a problem. ADB detects my phone only when I enable MTP (file transfering). It doesn't matter when i'm using adb in a…
Piotr Gajak
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Fastboot command with visal sturdio

Fastboot' getvar all return to richtext. This is my code: Process p = new Process(); p.StartInfo.FileName = "fastboot.exe"; p.StartInfo.Arguments = "getvar all"; p.StartInfo.UseShellExecute = false; p.StartInfo.CreateNoWindow =…
Modern Technology
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Why xiaomi mi10 is not recognized using adb\fastboot in fastboot mode?

Both Ubuntu and Windows recognize my mi10 phone on normal startup, but when I've enter fastboot (Power+Vol Down) to burn a new rom, it is undetected by either adb\fastboot, I've enabled usb-debugging and OEM Unlocking of course.
Yaron Avital
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Fastboot in Samsung note 3 sm-n9005 (lte), does it exist?

I'm trying to root and mod an old note 3, with a lot of effort because there are no more guides, links, etc. I start from a stock rom lolipop (just installed). Among the first things to do it seems there is oem unlocking, which some lucky ones have…
alebal
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Rebuilding Android LK

We are trying to bringup a new MIPI display that we are using for our smart glasses solution. To do this we have roughly followed the guide provided by Qualcomm:…
Ringo001
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Why doesn't fastboot work over wireless ADB?

It's simple enough to connect to ADB wirelessly. Basically something like this: Get the device ID for the specific device you're connected to: adb devices Then: adb -s tcpip 5555 Then get the IP for that device: adb -s shell…
Chad Schultz
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Fastboot devices not showing device

I am trying to unlock bootloader on my Samsung A40 with Android software tools. I have installed software tools through Android SDK Manager in Android Studio. Adb lists devices: However when I enter bootloader by typing adb reboot bootloader my…
ve6nu9o6
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my device is visible in fastboot devices but when i try to flash a custom recovery it always fails

so my devices (Asus zenfone max pro m1 X00TD) boot-loader was already unlocked but today when I was testing a ROM (android 11 ) it not only didn't boot but also made the custom shop recovery (based on TWRP ) disappear and after doing the regular 2…
ゼロとぉ
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Can't boot TWRP image using fastboot boot

I'm trying to root my Moto Z3 Play. I'm on Windows 10, I have already unlocked the bootloader, however, I can't boot the twrp.img. I got the twrp.img from here https://twrp.me/motorola/motorolamotoz3play.html and I downloaded the latest image…
MagneticFlux
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fastboot commands time out but devices are visible

I am trying to unlock the bootloader on my Aquarius X Pro 2. I am on Ubuntu and installed fastboot and adb and can connect via adb shell to the device or restart it into bootloader with adb restart bootloader. Also, I unlocked the bootloader in the…
Gh05d
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fastboot flash system fail: Writing 'system' FAILED (remote: 'Malloc failed for: CHUNK_TYPE_FILL')

In Android Q, is P OTA to Q version with 512M of memory. I reported the following error during execution. fastboot flash system P_2_Q\aosp_arm-img-6161928\system.img Header magic invalid sparse file format Sending Sparse "System" 1/52 (16380…
inkurushio
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