Fastboot is a protocol used by Android to diagnose and flash new firmware images on an Android devices via USB. It is part of the Android Debug Bridge (ADB).

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Problem rooting intex y2 aqua 1gb

I am trying to root my phone using Ubuntu. When I try adb reboot bootloader My device boots into fastboot mode When I try fastboot devices It list my device. But when I try ...
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SOLVED No Matter What I Do, My Nexus 5 Will not appear in adb devices while in fastboot mode

I was recently given a locked nexus 5. Every android phone I get I mess with so I know a decent amount. As usual, I decided to root it, and maybe install a ROM, since many are available for this phone,...
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14 views

ADB device unauthorized, cant get RSA Fingerprint

So I was messing around with my Dell Venue 10 5050, trying to root it. I booted to the bootloader and tried to unlock it. I formatted the system,recovery, and data partitions, which deleted Android OS....
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35 views

ADB detects but, fastboot does not detect device in windows 10

I am trying to root my phone. I have flashed TWRP recovery from here using Odin. I have installed Android Studio for Android SDK. The command adb devices shows the device connected but fastboot ...
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14 views

Unable to unlock boot-loader Micromax Canvas A1 AQ4501

i follow all process to fastboot oem unlock using cmd but unable to unlock i install adb drives and follow all instruction from many website but bootloader not unlock when i enter "fastboot oem unlock"...
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18 views

LG G3 (D855) Fastboot Problems

So I'm trying to see if my bootloader is locked because for some reason when I flashed a "bump'd" TWRP recovery, it came back with some brief certificate failure kind of thing (sorry it was only ...
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19 views

What does bootloader board_version variable mean?

I was following a procedure a friend gave me, which involved using Mi Flash tool to flash Xiaomi Mi4 WCMDA (cancro) with some Chinese ROM. A friend bought exact same product from the same vendor and ...
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1answer
25 views

Can access Fastboot, but it isn't working. Software issue?

First of all, thanks for taking the time to read this. I know it's a long post, I'm just trying to be as detailed as possible. I've a Moto G XT-1032 that stopped working a couple days ago. It has ...
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39 views

Error “FAILED (data transfer failure (Value too large for defined data type))” While Flashing Nexus 4

I have a Nexus 4 that was soft bricked during an OTA update. I have tried to flash several factory images to it and every time it gave me the error "FAILED (data transfer failure (Value too large for ...
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22 views

ZTE Blade G - fastboot and recovery no effect

I have problem with flashing, erasing new partition and wiping userdata. My installed rom is all time crashing and when I try to wipe all data (factory reset) in recovery, recovery says it's done, but ...
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1answer
13 views

Phone (Moto G) stuck in fastboot screen. Nothing works!

Stuck at this screen I am on a Mac OS and was intending to unlock the bootloader when I accidentally bricked my phone. I followed all instructions. Downloaded Motorola drivers, Android SDK and also ...
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1answer
25 views

Why can't fastboot see my device?

I have a 5" android tablet running on an Allwinner A33 chip referred to in device info as "astar_evb-eng". I am running Windows 8 (not 8.1) and have installed and tried every version of the ADB and ...
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1answer
194 views

Error when flashing recovery to Moto G4 Plus Xt1640 - Image not signed or corrupt

I recently bought a new android phone (Moto g4 plus). Coming from the iPhone, I was eager to root it and take advantage of all the features. The problem is that whenever I try to flash a recovery ...
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67 views

Unlocking phone: Fastboot command

I am trying to unlock the bootloader of my phone (Archos 50b Oxygen) using Ubuntu 14.04. But nothing happend when i launch the unlocking command. Here a few commands and their results: adb devices ...
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2answers
61 views

phone won't boot and won't enter recovery, even after reflashing TWRP

I have a Xiaomi Redmi 2 phone on which I installed Cyanogenmod. So, after upgrading manually, the phone won't boot anymore (neither into recovery nor into the system). Only fastboot works. (Probably ...
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1answer
40 views

fastboot responds, except that it won't flash my recovery image

I have installed Cyanogenmod (v13) on a Xiaomi Redmi 2 phone. So, it all worked, but then I tried a manual update. I booted into recovery (TWRP), and flashed the new cyanogenmod ZIP file; then flashed ...
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12 views

Recover user data from Nexus 5

My Nexus 5 shut itself off today and can't be booted anymore. I can occasionally get into fastboot, but if I try to launch recovery or boot normally, the phone shuts off or restarts before the Android ...
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20 views

How to release unknown wakelocks using Fastboot or ADB?

Under Battery History, it can be seen that the device is always 'Awake' due to some or the other app using WakeLock. So how to identify and release a specific/all unknown wake lock(s)?
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Stuck in fastboot after trying to root Moto G2 XT1033

Everytime I try to boot is giving me the message ending up at fastboot with message: Fastboot Reason: Fall-through from normal boot mode I already tried to reset to factory but all the options ...
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19 views

Fastboot not flashing/erasing recovery

I am trying to fix my phone (LG G2, Lollipop 5.0.2) by reflashing a recovery (the old one was corrupted). I've managed to get into Fastboot however I cannot flash / erase it; this is the output: # ...
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54 views

Not able to flash android N preview system.img in Nexus 6P

Not able to flash android N preview system.img in Nexus 6P Android N preview (Nexus 6P "angler") Build : angler-npd56n-factory-1ce5ccad.tgz fastboot flash bootloader bootloader-angler-angler--03....
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8 views

Is there a way to execute a comparable version of fastboot erase on an Android phone?

The GPS doesn't work on my Moto G since I flashed CM 12.1 on it. According to https://wiki.cyanogenmod.org/w/Known_Issues_page_for_falcon, it is possible to 'fix' the problem by erasing certain ...
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33 views

How can i activate, if it's possible, usb debug mode from fastboot in a 3rd gen moto g?

It is basically dad, it's possible from fastboot mode to activate de usb debug mode, and if it is, how can i?
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57 views

Resurrect one Huawei Ascend P7

I have the Huawei Ascend P7, was using Android 4.4.2, so I decided to update the phone, I followed a tutorial that taught me to do the BACKUP using Huawei app, and then selected the update file in the ...
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1answer
39 views

Couldn't acquire root after running superboot

I've already done all steps for getting root at my MotoG (2nd generation) but still can't acquire the privilege. Unlocked bootloader: Started developer mode + USB debug Ran fastboot oem unlock ...
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96 views

HTC ONE (M9) - S-OFF sunshine & cyanogenmod

Ok guys i'm in a real problem! I cannot make or receive phone calls for one week... it all started when I got bored with the original OS of the HTC One M9, so I rooted the phone and installed CM13 ...
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67 views

adb reboot bootloader just restarts on my LG G4

I'm trying to install the latest version of TWRP for my LG G4, but whenever I type in adb reboot bootloader into the command window, my phone restarts totally normally. From what I can tell by google,...
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55 views

How to boot from microsd, fix the bootloader and reinstall the android on ASUS MemoPad ME302C?

I have accidentally flashed a wrong image for fastboot update and now when I start my tablet in any kind of mode (normal, recovery or charging) I always fall into a bootloop: First the Intel icon ...
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1answer
129 views

Data recovery from android device with broken screen

Situation Summary - I have an Android device with a broken screen, LCD and touch I have an android phone (BQ Aquaris E4.5 Ubuntu Edition, which I have flashed with the Android firmware for the E4.5 - ...
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37 views

fastboot flash boot boot.img : hab check on boot

I unpacked and repacked boot.img and tried 'fastboot boot new_boot.img' . The device came up properly. I thought everything was okay and decided to install the image. When I did 'fastboot flash boot ...
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38 views

Volume Up button does not respond while unlocking bootloader

I have an InFocus M260 (MediaTek MT6582 based). It has a locked bootloader and whenever i try to unlock the bootloader, this shows up : fastboot -i 0x0489 oem unlock in the device it shows ...
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58 views

How do I recover data from an encrypted phone which will not boot and which is 'oem locked'?

My OnePlus2 phone keeps rebooting and won't give me access to the Android OS after a recent update. I now want to recover my encrypted data and reinstall the OS. After reading around on the web I ...
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26 views

Bootloader menu not starting

boda impressped E351 DC with andoid 4.2.2 but I want to install another os and for that I need to unlock the bootloader but when I try to open it with the adb (adb reboot bootloader) the device ...
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1answer
83 views

Install different recovery from CWM?

I'm trying to switch from CWM recovery to TWRP, my phone is a LG Optimus 4X HD / LG P880. Using Simple Recovery Switcher, I tried to flash the TWRP image, but when I reboot into recovery, I get into ...
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387 views

How to install update.app via fastboot when device is brick

I have an android 5.1 lolipop update.app for Huawei honor 4c. I installed it via settings -> updates -> local updates and it installed successfully. After installing custom rom my device is full brick....
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143 views

Cannot enter fastboot mode after flashing custom recovery

I flashed a CWM recovery on my Micromax Q380 (Canvas Spark) phone. After that only logo appears and it reboots again and again (boot loop). I tried entering into recovery and fastboot (Vol Up + Power ...
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423 views

OPO stuck in “Erasing…” while unlocking bootloader

I've been following this guide about rooting my OnePlus One. All seemed fine - adb was good, fastboot as well - and I reached point 6.1. Typed in fastboot oem unlock and got this output: ... OKAY [ ...
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194 views

Nexus 9, no recovery, no USB debugging, OEM locked in Settings

I've got a pretty complex problem. At the moment: Nexus 9 WiFi Tablet, USB Debugging not enabled Normal Startup: Android laying on the floor Startup with Power+Volume Down: Fastboot Bootloader ...
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69 views

Fastboot “waiting for device”

I have an galaxy s4 i33 that I need to have upgraded for work (or buy a new phone.) On both windows and Linux I can type "adb reboot bootloader" to open the bootloader. However, in windows: -Odin ...
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86 views

Windows 10/ADB/Fastboot not detecting Droid Turbo in fastboot mode

I recently tried to root my phone, and as you know the Droid Turbo is very hard to root. So I tried to use the TWRP recovery method. But when I try to use ADB or Fastboot to even list my device, it ...
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119 views

HTC DESIRE 310 - unlock bootloader problem can't fastboot oem get_identifier_token

The devices is connect on screen my HTC Desire 310 I have: On computer in cmd fastboot can see device but fastboot oem get_identifier_token not work : and nothing more What is wrong? Please ...
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1answer
57 views

Nexus 7 Google Logo Boot-Loop

My stock Nexus 7 was working fine until I turned it on. The lock screen was frozen. I then hard reset the device and turned it back on. On boot the tablet gets stuck on the Google logo and never ...
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68 views

Android Nexus 5 “Reboot&Wipe loop with hang” — Can't flash system

My Nexus 5 recently "soft-bricked" itself on an update, and I can't seem to get traditional methods via adb/fastboot (windows pc) to work. My phone is unlocked, and I have the necessary files in the ...
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607 views

What are the implications of doing fastboot erase modemst1?

I installed a Cyanogenmod 12.1 snapshot on my Moto G 2014 when I got it, it previously has only had the stock ROM installed, no other custom ROMs. I soon discovered that the GPS wasn't working on ...
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66 views

Cant relock bootloader

I tried to relock bootloader in Xperia Z2 with flashtool, but it didn't work. With fastboot it stuck for long time: Screenshot (click to enlarge) Am I doing anything wrong? How should I proceed?
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202 views

Install TWRP recovery in soft bricked alcatel OT 6012x

My phone isn't booting up and stuck on the manufacturer logo . Actually i need to unbrick the phone using a custom rom flashing , So i tried to install a TWRP recovery by using SP Flash tool but ...
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102 views

Oneplus One stuck in Fastboot mode, no power button!

as the title suggests, my OnePlus One is stuck in Fastboot mode and doesn't have a working power button. It came unplugged and since being plugged back in isn't appearing under adb devices. Is there ...
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0answers
66 views

Mounting encrypted partition from PC - is there anything I can do?

Okay, so basically I have the same problem identified here, except instead of a broken screen, I accidentally broke the UI with this bug. And all I want to do is mount the encrypted partition so I ...
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72 views

I can't use the volume keys in fastboot after using the command fastboot oem unlock

I am trying to unlock the bootloader of my ZTE Blade V6/D6 using fastboot oem unlock. When I get to the stage that gives me the option to select yes or no using the volume up or down buttons ...
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1answer
77 views

Unbricking a phone without being able to access recovery

I have rooted my Zenfone 2 ZE551ML using a method which permanently replaces recovery (I didn't realize it back then). Can I unbrick it using only fastboot? I can't use adb, as I can't open recovery. ...