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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360 views

What's the name of the protocol that android devices use in debug mode?

I have a strange Android prototype what we got from a customer. Said customer has forgotten about it, and I'm now fiddling with it to see if I can make it do anything interesting. The device appears ...
10
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1answer
11k views

Clean way for flashing factory image on Samsung Galaxy Nexus?

Is this the correct and clean way for flashing factory Jelly Bean image on Samsung Galaxy Nexus, without using any external tool (apart from Android SDK)? I don't want to to break my phone, so I'm ...
8
votes
3answers
14k views

What does “fastboot oem lock” do?

I've had my phone for months, loading with several firmware, ROMs and OTAs, without ever running this command. What does it do? What I know is that "fastboot oem unlock" displays the confirmation ...
6
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1answer
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Nexus 10 won't boot after attempted unlock/root

I have a brand new Nexus 10 which is supposed to be a present for my partner for tomorrow. I wanted to have it rooted and set up for her before I gave it to her, so I installed WugFresh NRT on my ...
5
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2answers
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Obtaining root by modifying default.prop(ro.secure)?

To get a privileged shell you need to modify the following lines to the given values in the default.prop file ro.secure=0 ro.debuggable=1 persist.service.adb.enable=1 I have the extracted the ...
5
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2answers
4k views

Getting Segmentation Fault on recovery

It's an Android 4.0.3. I'm trying to fix my tablet, because it doesn't start anymore. running fastboot devices returns nothing. Then, I'm trying to do that through adb. adb devices returns List of ...
5
votes
1answer
570 views

Phone boots very slow and restarts by itself

My problem is when I turn on the phone, the Google logo stays stuck and after unknown minutes boots in with the software animation, but very slow and then starts over again! First a little history of ...
5
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1answer
9k views

Problem with unlocking the HTC Wildfire bootloader with HTC unlocker

I tried to unlock HTC bootloader by the official tool but I get to the stage when I issue the command: fastboot oem get_identifier_token Unfortunatly I get error ... (bootloader) [ERR] Command ...
5
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0answers
1k views

nanddump vs fastboot

I have two identical phones. On one of them I've managed to corrupt the system partition and it won't boot. I have fastboot, root (on the one that boots), but I don't have ClockworkMod --- my phone ...
4
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4answers
4k views

Anyone have an alternative dowload site for a fastboot binary?

I'm working on rooting my android kernel and most sites list http://android-dls.com/files/linux/fastboot as the place to look for the fastboot binary. However, I've been getting a 404 (Page not Found) ...
4
votes
2answers
21k views

Problem unlocking HTC phone using their fastboot program

According to HTC, my Amaze 4G is fully ready from the factory to be queried for its identifier tolken, but when I run the appropriate command, it doesn't work. I get: $ fastboot oem ...
4
votes
1answer
3k views

Can I lock the Nexus 4/7 bootloader after flashing a non-stock ROM?

I know that doing a fastboot oem unlock will both unlock the bootloader and wipe the data on the device. Unfortunately, while this allows me to install a non-stock ROM like Cyanogenmod, my ...
4
votes
1answer
7k views

fastboot not working on my Nexus 4

I'm trying to root my N4, and fastboot doesn't seem to work. Running it on linux, and the fastboot binary seems to run. 'Fastboot devices' produces info on my device, but 'fastboot oem unlock' just ...
4
votes
2answers
32k views

Flash boot.img without using fastboot USB

So I've recently rooted my phone and tried a ROM or two. I find it really handy that you can use TWRP recovery to install another ROM from the SD card, you don't need to have it connected to a PC. ...
4
votes
1answer
7k views

How to Retrieve SD Card Files via fastboot or recovery?

I have a Nexus 4 (LG E960) running rooted stock 4.2.2/JDQ39. The phone fell from a foot high and the screen cracked. The touchscreen no longer works. I have a full Nandroid (TWRP type) backup under ...
4
votes
2answers
8k views

Samsung Galaxy S3 with fastboot

I have a Samsung Galaxy S3 (international and unlocked). I recently downloaded the kernel source code from Samsung's website and have successfully compiled and now have a zImage file. My problem is ...
4
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0answers
432 views

Extracting the radio firmware image from an Android phone

How do you pull radio images off an Android device? Is there any way to do this?
3
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1answer
2k views

Stock Android on Nexus S - “invalid magic code”

I have a Nexus S (2.3.3, GRI54/I9023, bootloader unlocked, clockworkmod recovery installed, rooted) and I'm trying to flash it with a stock system.img that I built myself (no modifications - yet). To ...
3
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2answers
10k views

How to boot into the bootloader when you have ClockworkMod?

I want to upgrade the radio and I'm not sure how to boot into bootloader. When I try to power the phone using VolumeDown+Power, I do get into the ClockworkMod Recovery, but it seems that this is not ...
3
votes
2answers
14k views

Unlock bootloader using fastboot using Ubuntu/Linux

I am trying to unlock bootloader for my HTC Legend. I have ADT (Android SDK according to release 21.1) on my Ubuntu/Linux box. While following the HTCDev instructions to unlock bootloader of HTC ...
3
votes
2answers
4k views

Can't boot to Clockwork Recovery on Atrix (several methods tried)

I have a Motorola Atrix 4G, with AT&T Carrier. Android 2.3.4 EDIT 11/6/2011: I don't know if this means anything, but I don' have an sdcard in it. I have rooted it using this tutorial. I ...
3
votes
1answer
4k views

I can FastBoot my device. How can I reinstall an Android image to it?

I accidentally deleted a file from my phone (Sky iVega IM-A800s, Gingerbread) and phone cannot boot now. I'm seeing an "System operating error" and device restarts repeatedly. I could get into ...
3
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2answers
1k views

How to unlock Nexus S 2.3.3 bootloader without having to wipe all device data?

The usual way is to execute: fastboot oem unlock But this will erase all my private data.
3
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2answers
7k views

How Can I Pass Bootloader (Huawei Y200 stuck logo/ Boot-Loop)

I have recently learnt a few things about Android and its system. I have a Huawei Ascend Y200, and I flashed it with ClockworkMod specifically for Y200 with a computer and it worked. I rooted my ...
3
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1answer
719 views

Will fastboot not proceed with flashing if battery level is below certain percentage?

I'm trying to re-install Clockwork recovery mod (tl;dr: Android 2.3.1+ will reinstall stock recovery on every boot if it's not present). I had installed it successfully yesterday, but today it does ...
3
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2answers
22k views

Installing ROM from Fastboot — Can someone help?

I have a new HTC MyTouch (32A) that I tried to install a new ROM on using ROM Manager. I have done this many times (maybe 100 times), once in a while it goes wrong. Now, with this one, it can't get ...
2
votes
1answer
6k views

How can I get the fastboot command?

I'm trying to root my KF 6.3 following this article. http://forum.xda-developers.com/showthread.php?t=1568340&page=1 Now I'm in Kindle Fire screen (fastboot mode) but fastboot is missing. ...
2
votes
1answer
2k views

How to unbrick/reflash Nexus S using stock ROM, stock tools

I have a Nexus S that seems to have bricked itself. I have never modded the ROM or phone, and it was totally stock. Now, it boots right int the white Google logo and stays there forever (I let it ...
2
votes
2answers
1k views

Install zImage on Android 2.2 devcie

How do I install zImage on Android 2.2 device? I have one galaxy tab 7.0 and one NVIDIA Tegra 250 delvel kit. I was trying to using fastboot on NVIDIA Tegra 250 but I failed. I could load zImage ...
2
votes
1answer
504 views

Access root directory?

Assuming that I am not able to start up my phone due to a file that is missing on the file system. Would it be possible to get to my phone's root directory on my computer and to place the missing ...
2
votes
1answer
324 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 ...
2
votes
1answer
86 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 ...
2
votes
1answer
717 views

How does the safe/fastboot/recovery mode differ from the normal as seen from windows pc?

This is a related question to: How to install fastboot drivers? I have trouble using the command line fastboot program. I think that I don't have the correct drivers installed. How can I verify ...
2
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0answers
2k views

HTC Sensation fastboot unknown device

i want to apologize because i think you get this question a lot, but i experience problems trying to root my HTC Sensation. I turned USB Debugging ON, checked that Fast boot is turned ON in Settings ...
2
votes
1answer
346 views

Erase successful, but not automatically formatting. Can't determine partition type - Jelly bean 4.1.2 with Nexus S

While I ran the command - fastboot flashall -w I got the following error - -------------------------------------------- Bootloader Version...: I9020XXLC2 Baseband Version.....: I9020XXKI1 Serial ...
2
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0answers
1k views

Installing Android using only fastboot on HTC Vision

I lost my system somehow. My phone turned off and reboots during starting up. I'm only able to go to hboot (fastboot/recovery etc.) on my phone, and I'm unable to run Android system. I have tried ...
2
votes
0answers
3k views

Installing custom ROM on HTC phones over Fastboot or ADB

I am trying to build CyanogenMod for Sensation. After building I have update.zip, which I can install over CWM recovery manually. But how do I install the ROM over Fastboot or ADB in order to automate ...
2
votes
2answers
7k views

Extract boot.img

I have pulled boot.img from my phone's CWM backup. How do I extract it? I tried split_bootimg.pl. But throws an error - Android Magic not found in boot.img. Giving up.
2
votes
1answer
531 views

Restoring Nexus S to factory everything

I'm running a Nexus S i9020A on CM9 ICS 4.0.3, with a Matrix 1.46. I've found this website which seems to contain a fastboot image. I was wondering if I use the fast boot image on my Nexus S. Would ...
1
vote
1answer
4k views

How do I unlock the bootloader on my Sony Ericsson Xperia mini pro?

I own a "Sony Ericcson Xperia Mini Pro" (model number SK17i) running Android 2.3.3 (Kernel 2.6.32.8-perf, build number 4.0.A.2.335). It's branded by Orange Austria. I'm looking for a way to root it, ...
1
vote
2answers
940 views

What are the consequences of installing CWM?

I installed CWM sometime back and switched back to a stock ROM. When I installed CWM I lost my userdata, by which I mean the phone started as it would for the first time after opening the box. I used ...
1
vote
1answer
503 views

Nexus One can boot only with USB fastboot

After making some changes to my Nexus One, I can't boot it normally, but I can boot it with USB fastboot, like this: $ cd 1.0-GRI40-nexusone-superboot $ ./fastboot-linux boot boot.superboot.img How ...
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vote
1answer
103 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 ...
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vote
3answers
15k views

How do I disable Fast boot without the Power option in Settings?

I went over some of the old forum posts about this issue and there seems to be a lot of confusion about this. I am planning to root my HTC Desire (GSM) which at the moment is running original UI/ROM ...
1
vote
1answer
624 views

How to Install our android image in laptop ? How to make android boot-able image for laptop?

I have Android Source Code image and i want to install it on Laptop . I want to know how we made bootable image for laptop with android image. What I have to do so that laptop detect the android ...
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1answer
593 views

Is the kernel flashed automatically from CWM?

By this, I mean, while flashing a firmware (update.zip) from ClockworkMod recovery, is boot.img also flashed or do I need to use fastboot separately?
1
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1answer
7k views

Android boot-up messages for debugging?

I am trying to figure out if Android (i.e. Galaxy Nexus, Nexus S, and/or Motorola Xoom) come with some sort of capability to produce a "boot-up" log. (kind of like Linux boot-up screen) It would be ...
1
vote
1answer
1k views

USB drivers on the xperia play

I'm helping out a friend with rooting Xperia play, I spent 5 hours trying to root it yesterday with him and we couldn't. We tried gingerbreak and z4mod but they did not work, so we tried the fastboot ...
1
vote
1answer
1k views

Unlocking the Bootloader on a Nexus One with S-On

I'm interested in rooting my (Very recently bought) nexus one, and installing Cyanogenmod over Fastboot. However, on the boot screen of my device I've noticed the first line tells me that security is ...
1
vote
1answer
2k 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 ...