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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423 views

fastboot flash works but does nothing (moto g)

My moto g get stucked on a blank screen after the motorola logo animation. I tried going into the recovery and wiping data and cache. Nothing happened. I tried unlocking the bootloader --> No ...
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1answer
581 views

Methods of checking bootloader status

Just curious if there's any methods to check bootloader state besides using fastboot. I ask because on my device, even after unlocking successfully, the bootloader still shows that its locked when ...
2
votes
1answer
417 views

Oppo find 7: bootloader re-lock impossible?

I tried to relock the bootloader on my Find 7 (which I'm pretty sure was unlocked since I installed a custom rom). fastboot oem lock ... After that nothing. Windows console is "stuck". Any clue?
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1answer
4k views

dtb not found error

am trying to boot philz_touch_6.55.0_dior.img in my xiaomi redmi note 4G through the andRoid debug bridge to my phone but when I write the command " fastboot boot philz_touch_6.55.0_dior.img " I get " ...
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0answers
2k views

fastboot oem unlock: hangs with `…'

First of all, I am a newbie to Android. I am using Ubuntu Gnome 14.10 to run all the commads. I am trying to unlock the bootloader of my Lenovo A536 (stock Android 4.4.2 aka KitKat). Here is what I ...
3
votes
1answer
207 views

Fail to install CM13 on Oppo Find 7a

I would like to install Cyanogenmod 13 on my Oppo Find 7a. I am following the instructions from CM wiki. I am using a laptop with Linux (LMDE2). I fail to install a TWRP recovery. Fastboot seems to ...
4
votes
2answers
58k views

How to check if your 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 went with), and I don't want to ...
1
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0answers
35 views

How can I find out if the Bootloader is locked or not? [duplicate]

Is there a direct way to find out if the bootloader on a new unrooted device is currently locked or not? I would like to do this without the risk of clearing or bricking the device. I am looking for ...
0
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1answer
191 views

HTC One M7 stuck on boot

I have a HTC One M7 since 2 years. I got a software update in December and i tried to update it and somehow after the update the phone showed me errors. So back then i did a recovery and the phone ...
1
vote
1answer
753 views

can fastboot be used to backup device?

Many people tell about fastboot that it can be used to flash a image on one of the partitions. Is the reverse also possible, that is take a binary snapshot and store it as a zip file containig the ...
15
votes
4answers
52k 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 ...
1
vote
1answer
202 views

boot loop after flashing partitions from stock firmware

I have Arch linux installed and have installed android-tools(so fastboot and adb commands are available). Because I had a problem with kingroot I needed to flash the phone to stock. I had stock ...
1
vote
1answer
12k views

Windows 10 Fastboot Driver

My Sony Z3 Compact is currently unusable and I would like to flash the Marshmallow version of FXP. Unfortunately it seems like I can't find any fastboot (or as device manager calls it: S1Boot ...
0
votes
1answer
1k views

Mac OS X fastboot is just waiting (HTC M8 T-Mobile)

I'm trying to run fastboot oem get_identifier_token on Mac OS X Yosemite but I get stuck on "< waiting for device >": ➜ platform-tools ./adb devices * daemon not running. starting it now on port ...
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votes
2answers
78 views

device not showing in fastboot

I have a Samsung Galaxy Tab 3 (GT-P5210GNYXAR) currently with NO OS (I completely wiped the tablet in TWRP.) However, I did root the device, so now it has the TWRP thing. I tried installing the ...
1
vote
1answer
3k views

Samsung Galaxy S3 I9300 is not detected by fastboot under Ubuntu 14.04

When I connect my device in Download mode to my laptop, it is not detected by neither adb nor fastboot commands: fastboot devices and sudo fastboot devices returns nothing when device is connected ...
1
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0answers
206 views

Nexus 5x stuck on Google logo

First time that I've been lost about how to fix an android device. In short, I tried updating the my device to the latest cm13 nightly but that ended up causing the Google logo loop (wouldn't boot ...
0
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0answers
235 views

Sony Xperia Z5 Premium recovery or fastboot or bootloader mode key combination

I have a Sony Xperia Z5 Premium which cannot get past the "Starting Applications" spinner. I would like to put the device into fastboot/recovery/bootloader mode, but pressing Volume down and Power ...
0
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0answers
71 views

Fastboot Flash Recovery HTC Pico Bad file descriptor

My device is HTC Explorer (Pico) Desktop is Ubuntu 14.04 64 bit My device is rooted already. I am trying to flash TWRP Recovery My device is detected alright $ fastboot devices SH1BRVN****** ...
2
votes
1answer
708 views

Fastboot doesn't see nexus 6p

Currently trying to unlock my bootloader, but cannot get my nexus 6p to determine that it's connected to my PC. I can use adb commands while it's on, but booting it into fastboot mode with the adb ...
0
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0answers
64 views

adb option like fastboot -i <vendorid>?

Hi I was wondering if there was a command similar to fastboot's -i in adb. I'm currently trying to find my device in adb, but I could only target the device in fastboot with -i and the vendor id (I ...
0
votes
1answer
2k views

Operating system in a phone having no OS

I have sony xperia P and i was trying to install custom ROM in my phone.I copied the boot.img in the boot partition.Now my phone doesn't starts. There is no external SD card slot in my phone. How ...
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votes
1answer
152 views

Cannot unlock bootloader of my OnePlus 2 with oem unlock

I want to flash my OnePlus 2, as it's stuck on the boot logo. For this, I first need to unlock the bootloader, but I can't: the adb command tells me I have to check "oem unlock" in the phone settings. ...
1
vote
1answer
106 views

Wondering if i can debloat some google apps from unrooted lg phone for my father?

My father being older does not want to modify his phone, however he has a LG L70 and no sd card, and doesn't use some unnecessary Google apps, such as play, books, and whatever else. My question is ...
1
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0answers
49 views

Can't recover Nexus 5 from bootloop

Hey I am trying to get my Nexus 5 working again. I really need someone to help me troubleshoot this. One day I noticed my phone was off after about half an hour from being fully charged. It wouldn't ...
0
votes
0answers
181 views

Fastboot not working?

I have a Huawei Honor 6. I have an unlocked bootloader, and I am trying to install marshmallow. I have flashed TWRP before (and I can boot to it and use it), so fastboot has once worked. Now when I ...
0
votes
1answer
299 views

Backup/flash system and data without unlocking bootloader?

I was wondering if I can make a full backup of my system partition via fastboot or adb and re-apply the backup to a different phone of the exact same model? Or is this only possible if the bootloader ...
0
votes
1answer
48 views

I flashed recoveries with Odin, why doesn't my phone boot bow?

Samsung S3 Android phone, not rooted, stock firmware. In chronological order: I turned on USB debugging, although could not use fastboot. I used Odin to flash multiple recoveries, but I don't think I ...
8
votes
3answers
5k views

Trying to flash a system.img I took with dd - failing

Long-time UNIX guy here, but relatively new to the world of Android. Read on. EPISODE 1: A New Backup (I hoped) I have recently purchased an Asus MemoPAD (ME103K) ; I then became root, and took a dd ...
2
votes
0answers
225 views

Any chance to unbrick relocked HTC One M7 with S-on and a old copy of the RUU.zip

Background After 1 year of use, the most recent OTA to my HTC One rendered several key features, including the notification bar and the home and back buttons, unusable , effectively soft-bricking ...
1
vote
1answer
642 views

flashing twrp on lg g4 no error, but no twrp

I'm trying to flash twrp to my lg g4. I've reached the part where I run fastboot flash recovery twrp.img And everything seems to work fine, but when I try to enter recovery mode, I get the default ...
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0answers
52 views

HTC one v boot loop after restoring using TWRP

I restored original ROM of my HTC one v using TWRP but it stocks on HTC logo during boot I had installed Shendu ROM with Hellboy kernel before. I cannot access fastboot from my laptop too. It seems ...
6
votes
2answers
3k 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 ...
0
votes
0answers
44 views

Where does fastboot live on the device?

I just started getting into ROMs and it's really great. I am wondering where fastboot actually lives on the device so I can make sure I don't harm it. I'm fairly sure that it doesn't live anywhere in ...
5
votes
4answers
7k 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 ...
1
vote
1answer
413 views

Device boots normally, but cannot enter recovery or fastboot

I have secondhand Vodafone Smart Tab 4G. It seems to me that previous owner messed something up. The device boots normally but I cannot enter either bootloader, fastboot, or recovery. I have tried HW ...
0
votes
0answers
177 views

flashing boot.img separately vs flashable single zip for custom rom?

I have seen different methods to flash custom ROMs? 1) For my phone where I recently installed a custom ROM, first I flashed a custom recovery TWRP using fastboot flash recovery recovery.img. In the ...
2
votes
0answers
128 views

Stuck in Fastboot mode after flashing custom ROM on Xiaomi Mi3W

I flashed MIUI fastboot ROM on Xiaomi Mi3W since I had problem booting it. It was a old ROM but now nothing happens except it is stuck on fastboot mode. It doesn't even charge the battery. I tried ...
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votes
1answer
81 views

How to connect a Motorola Xoom 2 ME (MZ607) on fastboot mode to a PC?

I am trying to connect a Motorola Xoom 2 ME (MZ607) on fastboot mode to my laptop running Windows 10 as per described here: https://goo.gl/ln57PX When the system loads, Windows recognizes the ...
2
votes
0answers
2k views

Can't unlock bootloader

I'm trying to unlock the bootloader of my tablet for hours now.. There's no solution out there that worked for me. I've already tried: fastboot oem unlock (the tablet responses with a question ...
2
votes
1answer
4k views

Fastboot oem get_identifier_token - FAILED (remote: unknown command)

Hello Everyone! I am trying yo unlock the bootloader with no success. Basically, the following command Code: Fastboot oem get_identifier_token is hitting the error of: FAILED (remote: unknown ...
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votes
0answers
53 views

ubuntu fastboot devices not returning anything

I have tried the following for Note 3 running kitkat 4.4.2 Downloaded android sdk and hence using the latest fastboot (adb can see device) Added myself to plugdev grp and setup udev mentioned below. ...
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votes
0answers
46 views

Correct build choice for Nexus 7 lunch

I've been trying to install a kernel/bootloader/etc for my Nexus 7 wifi only model tablet and got this error from fastboot flashall, Device product is 'flo'. Update requires 'msm8960' or 'deb'. ...
0
votes
0answers
271 views

Cannot use ADB on a bricked phone

I'm trying to unbrick a soft-bricked Android phone, and many tutorials say to use ADB to fix it, but I cannot use ADB or fastboot, since the device is not reconized. It's a Lenovo Zuk Z1, I am running ...
0
votes
1answer
2k views

Xperia M dual stuck at boot screen after unlocking bootloader!

Help needed it's urgent. So I have unlocked bootloader successfully via fastboot. Everything went fine until the end without any error. So I disconnected the device from PC and rebooted it and now it ...
0
votes
0answers
230 views

HTC Desire 816G cyanogenmod fastboot oem unlock issue

When i issue sudo fastboot oem unlock I am getting this error message ... FAILED (remote: unknown command) finished. total time: 0.002s How to solve this issue?
7
votes
2answers
110k views

How to enable USB Debugging in Android if forgotten pattern for screen-unlock?

I want to use some third party software to clear my device's screen unlock pattern which I forgot. They require USB debugging enabled but I don't have it enabled in my Android. How do I turn on USB ...
1
vote
0answers
2k views

System update fails with status 0, fota return code 409 (Zenfone 5)

On my Zenfone 5, I flashed recovery and fastboot versions 2.21.20.44_ww successfully. But when I send the package UL-ASUS_T00F-WW-5.3.3.3-user via adb sideload, I get errors. E: Can't open ...
0
votes
1answer
193 views

Stuck in fastboot oem unlock (Fly IQ4503)

Trying to install another OS on my Android phone. Fly it isn't so popular phone, so I have lots of problems within installation. Also I used for this my laptop with Ubuntu 15.10. Now I'm trying to ...
0
votes
0answers
1k views

Huawei P8 Lite - Bootloop after Rooting, Attempting to flash ROM

I got a new Huawei P8 Lite and unlocked the bootloader and rooted it. After that I updated the EMUI/System and rebooted it. Since I rooted it, it apparently doesn't like the update and is now in a ...