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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16 views

Nexus 7 in Fastboot (recovery) not activating USB connection

I realise this is asked countless times but I genuinely believe my question is unique, please bare with me as I explain. My Nexus7 (2013) is not working in fastboot mode, I connect my Nexus 7 and run ...
0
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0answers
3 views

How to i fastboot karbonn titanium s1 plus

I want to root my android device and for that I have to enter fastboot mode in my karbonn titanium s1 plus. I tried pressing the volume up key and the power key while booting but nothing. It just ...
0
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0answers
37 views

Unlock bootloader for Lenovo A1000-T

How did you go into fastboot mode? I am not able to figure out. adb reboot bootloader adb reboot-bootloader adb reboot fastboot None of them worked, However adb reboot recovery opens it in ...
1
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0answers
63 views

Asus Transformer Tab tf300t stuck on asus screen. No ADB, no fastboot, no recovery, no os

I'm very happy with cm11 on my Galaxy s3 so i wanted to try it on my tf300t. First i unlocked the bootloader which i succeeded in doing. Then i flashed clockworkmod recovery via adb. However, when i ...
-1
votes
1answer
47 views

Booting custom rom instead of flashing

i want to backup my stock partitions from an unlocked device (s-on), tried different things (dd with adb, pushing su-binary with adb, booting custom recovery with fastboot) but nothing worked for ...
0
votes
1answer
85 views

adb device not found

When I enter ./adb devices I get Device not found. Yet I can successfully unlock my phone via ./fastboot oem unlock. I can't turn on debugging since my phone is stuck in a bootloop and won't start ...
0
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0answers
47 views

Fastboot doesn't recognize moto g 4g on linux

I have a Moto G 4g. ADB recognizes the cell and I can restart it in fastboot mode, but when I check in the terminal with: fastboot devices Nothing appears, and if I go on with fastboot oem ...
0
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0answers
52 views

/sdcard not mounted

I have installed a nightly build of Cyanogenmod on my HTC One S. It has a problem that it doesn't have /sdcard (internal storage) mounted, so I can't save any data on the device. Applications install ...
0
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0answers
16 views

Android: Green bar in bootloader

I tried to run the command fastboot flash recovery recoverym.img using cmd but I've got some problem. First, a green bar (progress about 90%) was shown on the top right corner of my bootloader. ...
0
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0answers
30 views

Xperia Go: Boot into Recovery Mode [duplicate]

First time messing with Android OS/ROM I have a Sony Xperia Go (ST27i with Android 4.1.2) I aiming to deploy the latest kitkat ROM for this phone ...
0
votes
2answers
72 views

does flashing a kernel ever wipe anything on the phone? + Doing it without CWM?

does flashing a kernel ever wipe anything on the phone? and is it ever dependent on android version? e.g. 4.22 or 4.3 I have CWM and i've seen the option to install from zip within CWM recovery. ...
2
votes
1answer
1k views

FastBoot recovery failed: partition 'recovery' not support flash

My mobile is Lenovo S920 running official Android OS 4.4.2. I am trying to install cwm recovery through fastboot. I tried executing the command fastboot flash recovery recovery.img But I am ...
0
votes
0answers
47 views

Xperia Miro fastboot wont work

I've been following the official sony's unlockbootloader tutorial and I'm stuck on a problem that I cant seem to fix. To use my unlock code, I have to Turn off the device Connect the usb cable ...
0
votes
2answers
117 views

Is it possible to run fastboot in a recovery mode shell (without connecting to PC)?

I have a method for unlocking the BootLoader of my HP SlateBook x2 running Android v4.3 consisting of: 1- Booting into recovery. 2- Connecting to PC via USB cable. 3- Sending the command fastboot ...
0
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0answers
17 views

Erase commands aren't working in fastboot [duplicate]

On my Google Nexus 7 (2013) aren't working any erase commands. When I try to execute some of commands: fastboot erase userdata fastboot erase cache ... it hangs on and nothing happens. If it is ...
0
votes
1answer
158 views

Fastboot doesn't recognize Nexus 5 on L

I recently flashed the dev preview of android L on my Nexus 5, however, I did what is called a "dirty flash" - I just used TWRP and flashed the image as if it was a normal ROM. The result is that it's ...
0
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0answers
225 views

How to detect if bootloader is unlocked when fastboot doesn't work?

I have this tablet that runs on RK3168 (Rockchip) SoC. The problem is that fastboot doesn't recognize the device, but after so much toil, I managed to find Finless' flashing tool and flashed CM ...
0
votes
0answers
423 views

adb/fastboot can't find device in bootloader, but they can do it when booted

I have worked on building Android from source code for few weeks. It used to be fine to me with my Galaxy Nexus, I can connect to my device via adb and fastboot and flash either the factory ROM or ROM ...
0
votes
1answer
41 views

Fully Wipe Nexus Device

I have a Nexus 7 2013 WiFi-only (flo) device. I rooted it and just generally messed around with it. Now I want to put it back to complete stock everything (bootloader, recovery, ROM, etc) AND ...
0
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2answers
839 views

TF300t bricked, no fastboot, wrong recovery

I've been running CM11 on my Asus TF300t for a while now. A while ago, an (automatic) update broke my rom. From there on, matters have gotten worse. Right now, my tablet is a brick without an OS. ...
1
vote
1answer
11k views

How to check if bootloader is unlocked?

I'm about to flash a custom recovery, but I'm not sure if my bootloader is unlocked or not (phone is rooted, but I did it a while ago, so I can't remember the process I took), and I don't want to do ...
0
votes
0answers
577 views

Blank screen after logo

I was trying to install a custom ROM in a THL T11 from needrom.com. I managed to get into the recovery mode and wipe cache. However, I got somehow into the «ADB» menu and couldn't get out. I pulled ...
0
votes
0answers
71 views

Android hangs on boot image after changing boot image

I changed the bootimage of an Android device and it bricked. It's freezing at the boot image. I try to install a ROM using fastboot but I have a permission error. I try to connect with adb but I ...
1
vote
0answers
399 views

Rooting note 3 - fastboot not unlocking or detecting

I have been reading so much trying to find the answer to this problem, but I can't find any. I am not quite sure what to do at this point. I am running XUbuntu and I am trying to to root my SM-9005 ...
0
votes
1answer
156 views

HTC One X hangs at bootscreen, repair centre writes it off

..so am I screwed or what? I was running the ViperX ROM on my One X, based on 4.2.2, and a couple of days ago I started getting FCs on HTC BlinkFeed, even though I wasn't using it. I rebooted into ...
0
votes
0answers
218 views

Fastboot command returns a list of question marks

I am trying to root an Acer Iconia Tab A200 tablet using a script. I have adb working and fastboot works too, however, command fastboot devices returns a list of question marks. Eg: ???????????? ...
0
votes
1answer
1k views

Fastboot flash bootloader fails

I tried to install CM11 on my Nexus 10. But, I wasn't able to install the boot.img with fastboot (Rooted, CM11 flashed with Clockworkmod recovery): [root@xx temp]# fastboot flash bootloader boot.img ...
0
votes
2answers
1k views

Htc one m7 International not recognized in adb mode

I have an htc one m7 running bootloader hboot 1.56. I unlocked the bootloader via htcdev.com The bootloader now shows Unlocked My phone is recognized in adb when the phone is turned on. But when i go ...
0
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0answers
166 views

can I use SP_Flash_Tool on Alcatel V860

is it possible to flash Vodafone Smart 2 with SP_Flash_Tool? and if not is there any other tool that will allow me to? since I can't use Recovery Mode nor Download(fastboot) Mode I accidentally ...
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2answers
1k views

Bricked Vodafone smart 2 (Alcatel V860)

I accidentally erased boot and bootloader. download mode nor recovery works and my pc recognize it like Broadcom USB. Any solution?
0
votes
1answer
362 views

Enable bootloader screen for Lenovo Vibe Z

I pressed and held volume up key for sometime and my Lenovo Vibe Z is seems to be bricked (not charging or switching on). I would like to get into to the boot-loader screen to factory reset the ...
0
votes
1answer
417 views

Meaning of Options in FastBoot Flash Menu

I've just bought my first Android device, a Motorola Moto G. Following the official guide on Motorola website, I learnt about FastBoot Flash Menu. Here there are several options. I'd like to know what ...
0
votes
1answer
236 views

Unable to flash recovery image into the device

I am trying to flash recovery image into my HTC Explorer phone. The issue is i keep getting waiting for devices message when issuing fastboot command. the CMD is running with administrative rights ...
0
votes
1answer
39 views

GNex factory reset apparently doesn't write anything and I'm not able to update

my gnex (maguro) started rebooting frequently (like every 30 seconds). I hope is not an hardware fault and now I'm trying to restore a factory image so I can rule out any custom rom-derived problems. ...
2
votes
1answer
5k views

Stuck in Fastboot?! Help please!

I tried to get CM11 on my LG G2 on Bell Canada's network and I really messed it up. I can no longer get into recovery, adb doesn't see my phone, but download mode works (though I have no idea how to ...
0
votes
0answers
2k views

Fastboot: Lock state - Locked on nexus 7

I am having trouble unlocking the bootloader on my Nexus 7. When I boot into fastboot I see the message LOCK STATE - LOCKED. I want to unlock the bootloader so I can re-install the stock operating ...
0
votes
1answer
524 views

Is it possible to unlock the bootloader without root access?

Is it possible to unlock the bootloader without root access? If so, is there another way to unlock the bootloader without using the command... fastboot oem unlock Now, for the background stuff ...
0
votes
1answer
627 views

How can I recover from flashing broken ROMs on my HTC One X?

I am seeking your help to clear up some of my confusion in solving a problem with my HTC ONE X. I tried flashing a custom ROM on my HTC Android phone but all the files and partitions got messed up ...
1
vote
1answer
565 views

What is true name of android (download/fastboot/odin) mode?

i saw every where to write something and named it this mode as download mode or fastboot mode or odin mode ..? what is true name of this mode? in iphone we named DFU mode that like this mode in ...
0
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0answers
219 views

how to change boot logo without using fastboot

I know how to change the boot logo(logo.bin) from fastboot, but the problem is how can I change the boot logo without using fastboot. I can't go to fastboot mode because I think my device(ME-702) ...
0
votes
3answers
7k views

Trying to restore photos from a broken S4 (AT&T), how do I go about it?

My friend broke her S4's screen, and wants to get back the photos from the internal memory. The phone does not have USB debugging turned on, so having it attached to the computer only charges it. The ...
1
vote
1answer
666 views

Documentation/reference for fastboot

Where can I find the documentation for fastboot in Android SDK's platform-tools? I know that running fastboot on its own gives a quick help for the different commands, but I'd like to know about ...
2
votes
2answers
11k views

Sony Xperia ZR fastboot driver

I am trying to get the fastboot driver for Sony Xperia ZR (dogo) for Windows 7 x64. I found a page with instructions which pointed me to a Sony site where you can download a android_winusb.inf file ...
1
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0answers
40 views

OS X utility to create stock images

Before I spoil my new HTC One. I needed a little help with the following Create a backup of the recovery Create a backup of the system Create a backup of anything that maybe required to bring the ...
1
vote
1answer
6k views

HTC One (m7ul) not found by ADB + formatted filesystem = bricked?

So, I'm really hoping that I haven't bricked my phone and that someone can help me figure out how to fix this. I can't remember exactly the steps I took to mess it up so spectacularly, but they ...
2
votes
1answer
117 views

How can I root my HTC One for T-Mobile using ADB?

I want to use ADB. FastBoot isn't working on my OS X machine. ./fastboot devices lists nothing. ./adb devices shows my device I downloaded SuperSu from the Google Play store but it says it I ...
0
votes
0answers
259 views

fastboot not finding SPH-L720 on Linux

This is with Ubuntu 13.10 on the host and a Sprint Samsung Galaxy S4 SPH-L720. When in normal mode, 'adb devices' finds my phone. I do 'adb reboot bootloader' to reboot my phone into bootloader ...
0
votes
0answers
908 views

Acer Iconia Bricked with reboot loop after root attempt

I attempted to root my Acer Iconia B1-A71 tablet and ended up bricking it because of not installing the partition fix apk (Bad tutorial). The tablet is currently in a reboot loop and I've tried so ...
0
votes
0answers
106 views

nexus s in bootloader mode does not appear in lsusb

I have a Nexus S, and I'm trying to root it. The bootloader is already unlocked. (I got it from a friend, he unlocked it so I don't know any details on how that was done.) When I start it and plug it ...
5
votes
5answers
8k views

ADB can discover devices but not fastboot

I've searched on the web about this problem and it's usually solved by installing the appropriate drivers. Problem is I'm on a Mac. When I plug in my device, it can be discovered when I run adb ...