Questions tagged [bootloader]

for questions on the bootloader, which is kind of "BIOS mode" on Android devices

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14 views

Fastboot doesn't see device but ADB does (windows 10)

I am attempting the unlock the bootloader on my Google Pixel 2 XL. I know this problem seems to be very common, but I have yet been unable to find a solution for my particular case after searching ...
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1answer
5k views

BOOTLOADER - USB Device Not Recognized

I am currently using a ROOTED "Huawei MediaPad 7 Lite" tablet and am having issues entering the bootloader. When powered on and connected to a PC, the device is seen in adb using the command adb ...
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9 views

Attempting to fastboot LG Tribute Dynasty,

So I am currently trying to flash an operating system onto my android and every time I try the command adb reboot bootloader It fails. The command simply reboots the phone like normal. Device: LG ...
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0answers
23 views

Android OS (6.0) occasionally hangs on bootloader

We run a custom Android version build on top of Android 6.0 with some minor changes specific to our business needs. We're now facing an issue where tablets sometimes don't go past the bootloader ...
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1answer
17 views

bootloader boot loop

I got a new Pixel 2 and wanted to load an TWRP backup from my previous Pixel 2 (with stock ROM) onto it, instead of setting it up freshly. So I booted the new device clicked through the settings ...
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2answers
1k views

Tablet listed under adb devices, but not under lsusb while in recovery

I am working with a Gemini devices GEM1000 tablet, I have performed all the steps to get adb working, and the device shows up under 'adb devices' so I go to the bootloader with 'adb reboot bootloader' ...
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1answer
1k views

Flashed wrong recovery on a QTAB with no bootloader or fastboot. What can I do?

Hey guys I was just tinkering, and it was stupid of me not to take a backup of any kind. Anyway, QTAB doesn't have a bootloader or fastboot menu. When I try adb reboot bootloader or fastboot, it goes ...
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1answer
2k views

How to delete Update.APP file from p8 lite

There is low disk space on my mobile and I want to delete this Update.APP file as you can se this file is taking 2.55 GB!!. I tried to delete it but it shows error "Error while deleting the file "...
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1answer
1k views

Is it possible to install a custom Android ROM if the bootloader is locked?

Suppose the bootloader of an Android device is locked. Is there any way to install a custom ROM without unlocking the bootloader? If yes, then how?
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1answer
113 views

actual limitations of locked bootloader

I have read in many posts that a locked bootloader prevents from flashing custom ROMs, because it checks the digital signature of the ROM itself. I thought a "bootloader" was only responsible for ...
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0answers
88 views

How to unlock bootloader on Sony Xperia XA2 Plus?

I'm following the tutorial on https://developer.sony.com/develop/open-devices/get-started/unlock-bootloader/how-to-unlock-bootloader/ . Following are commands and their outputs. sudo ./fastboot ...
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1answer
2k views

adb shell returns with error: closed

I somehow bricked my oneplus one phone badly. It only loads directly to the recovery. Pressing vol up + power button or rebooting it with adb reboot bootloader doesn't get me to the bootloader. I ...
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0answers
24 views

Fastboot Device not Detecting my Device

I'm following this tutorial about how to unlock bootloader on Moto. My device is a Moto G5, and my computer has windows 10. On the command line, I can type adb devices and it returns my device. I ...
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0answers
22 views

not sure how to breathe life into mate 8 64gb dual sim variant

I'm at a loss here, i have nougat on my mate mate 8 but i completely forgot that you had to root nougat in a particular way. Anyway, i don't have access to erecovery, power+volUPvolDown doesn't work ...
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1answer
1k views

Can't access Recovery Menu Milestone a853

I'm trying to flash a Cyanogenmod 7.1.5 on my Motorola Milstone A853. I can access the Bootloader (version 90.74) and started RSDLite 5.7 and used a base sbf file, which flashes normally. When I ...
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0answers
20k 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 ...
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0answers
32 views

How to back up app data from system applications? (e.g. YouTube search history)

In 2018, YouTube triggered their kill switch / time bomb for older versions of their Android application. Their more recent versions of their app limits the search history to 50 items, which means ...
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1answer
2k views

Yuphoria bricked and stuck in bootloop

My Android device YU Yuphoria is currently bricked and stuck in a bootloop. What I tried to do to cause this was that I first rooted the phone and installed TWRP. Then I installed Android Nougat on it,...
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1answer
2k views

HP Slate 21 Won't Boot and Recovery Doesn't Work

My stock HP Slate no longer boots. It stops at the HP logo / Powered by Android splash screen. I've tried all of the solutions typically available to this device like resetting with the power turned ...
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2answers
2k views

Can't Factory Reset HTC Desire C

I tried unlocking the bootloader (which I apparently succeeded at.) I then tried rooting it, which I failed at. I just want to reset the phone back to factory settings but when I try to do a factory ...
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1answer
32 views

Troubleshoot fastboot error 'remote: ' command not defined

Device: iMX 7ULP evaluation kit Platform-tools: r28.0.3 Image: O8.1.0_1.4.0_ANDROID_TOOL_7ULP_GA (ARM 32 Android 8.1) I used the image provided by nxp website on the device. Then I tried ...
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1answer
156k views

How to unlock bootloader on samsung devices?

Before you try to install any custom ROM on your device, you need to unlock the phone’s bootloader, which is a code executed before any OS (operating system) launch. The notion of a bootloader is ...
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41 views

I have unlocked my bootloader but ADB doesn't detect my phone so I cant get into my bootloader mode to install TWRP

I have a Huawei P10 lite and I wanted to root my phone, so I had unlocked my bootloader after much effort, and now I'm trying to install TWRP but every time i try to enter my bootloader mode it doesn'...
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1answer
885 views

Canot enter TWRP recovery because of “fastboot erase userdata”

I want to flash a new ROM for my Android phone. I clean data by fastboot erase userdata but after that, I can not enter TWRP recovery because can not mount /data I tried fastboot format userdata ...
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1answer
4k views

How can I update the fastboot driver for my Sony Xperia device

I Need to unlock the bootloader of my Sony xperia m2 dual. It's currently in stock. As soon as I connected my device in fastboot mode by pressing volume up button and connecting the USB cable my ...
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0answers
21 views

stuck on“Downloading… Do not turn off target!” when trying to boot via adb

I wish to flash a custom ROM on my galaxy tab a. To do this I downloaded ADB and twrp-3.2.3-0. when U run the command adb reboot bootloader my tab gets stuck on downloading... do not turn off target. ...
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2answers
889 views

Fastboot unlock failed

I have a Nokia 6 and whenever I try to unlock my device I am facing error. The command sudo fastboot oem unlock The result (remote: oem unlock is not allowed) Any suggestions?
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1answer
27 views

I need to relock bootloader

I was trying to unlock my phone, LG Aristo, so that I could sell it. I unlocked bootloader, and now I need to relock it. How do I do that?
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0answers
22 views

lenovo a6010 fastboot < waiting for any devices > when trying to flash

I want to root my device(Lenovo a6010),am now trying to install TWRP but fastboot can't see my device when I try to flash the image, even though "fastboot devices" yields my device. Usb debugging ...
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2answers
594 views

Orange state: can't boot into fastboot after bootloader unlock (REALME 1)

Can anyone help me with this? I unlocked my bootloader successfully. But after that, when I am trying to get into fastboot mode, I am not able to do so. Whenever I run adb reboot fastboot, phone ...
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2answers
11k views

Xiaomi Mi Unlock “Not connected to the phone”

I am going insane here and I need help now. I am trying to unlock my Xiaomi Mi Note 4's bootloader since almost 2 weeks, but I am stuck in this problem where the Mi Unlock tool can't recognize that ...
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4answers
10k views

How to re lock bootloader on samsung galaxy s5?

I have Unlocked Rooted Samsung Galaxy S5 recently it has been giving me a lot of issues and I want to send it to Samsung for repair meant. I understand that once you root your device you loose the ...
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1answer
7k views

Format Preloader and reflash (mtk6582) Sp flashtools

The problem is that spflash tools says: "PTM changed for the ROM: It must be downloaded." The solutions are, download the preloader.bin (not work for me), and format all + download.... but I want ...
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0answers
346 views

Corrupt and locked Pixel 2 bootloader

I recently came in the possession of a Pixel 2 that will not boot and instead displays the following error (see the image below for more details): ERROR: Slot Unbootable: Load Error The friend that ...
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3answers
13k views

Android Bootloop No recovery mode - only viberation

Phone: Huawei honor 3c I downloaded Emotion UI 3.0 for "probably" the wrong set form here offical site.But it was installed properly. Then there was an update of same emotion UI, which on ...
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1answer
3k views

How to upgrade HBOOT from 0.80.0007 to 1.01.0001

I own an HTC Wildfire with HBOOT version 0.80.0007 and S-On. How do I upgrade to HBOOT 1.01.0001? Can anyone give me a nudge in the right direction? I've been racking my brains for the last few days, ...
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2answers
4k views

Need help unlocking my bootloader on HTC Desire 310

EDIT: It has failed with a too many links error This christmas I was treated to a HTC Desire 310 and I am trying to root it which I understand needs the bootloader unlocked. That is where my issue ...
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1answer
7k views

Install android on non-booting XT1033 (Moto G 1st gen) - USB debugging not enabled

I have a Moto G (XT1033) running Android 5.0.2 that went out of charge one day. It then decided to boot into a black screen - i.e. I can see the Motorola splash screen (animation) but all I get after ...
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1answer
3k views

Can't boot into custom recovery on Cyanogenmod 12.1

After installing Cyanogenmod 12.1 on my LG G2 (d800) I'm unable to boot into custom recovery. If I use Cyanogen to boot into recovery, my phone just turns off and I can't turn it on for several ...
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1answer
53 views

Sony F5121: Forgot Device Encryption Passwort, locked bootloader

I forget the device encryption password for my F5121 (locked bootloader). Is there any way to hard-reset the device, so I can use it again (I don't care about the data on it)? I already tried some ...
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1answer
4k views

Moto G stuck on the screen “Warning bootloader unlocked”

I'm trying to solve a problem that is affecting a Moto G 2014 XT1069 device. What happened is that the device did shutdown, then when trying to power it up again, it stayed stuck on the Motorola logo ...
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0answers
20 views

Does manual firmware update needs boot loader unlocked?

I tried manually update my phones firmware but I didn't get any notification after I put zip file to root directory of internal storage. So does it need boot loader unlocked?
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0answers
279 views

Phone's power and volume buttons will not work in bootloader

I have recently decided to unlock the bootloader of my BLU Studio X8 HD. I have first installed the ADB drivers and afterwards I have used the command adb reboot bootloader to boot the device into the ...
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1answer
32 views

Boot from SD or external hardware device?

I've tried researching this before, but was unable to encounter an answer. Can you boot a rooted device through USB-C, SD, or something? I'm currently running a Galaxy S9+ and want to keep Android Pie ...
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2answers
8k views

How to unroot and lock bootloader in HTC desire 820?

I have unlocked the bootloader with windroid, then I flashed TWRP recovery, then I flashed supersu zip file through TWRP to root my phone. Now I want to Unroot and relock the bootloader, but when I ...
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2answers
962 views

Unlocking Bootloader to wipe internal storage

I know that unlocking bootloader does wipe the /data partition. However, can it also wipe the /storage partition and others, too?
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2answers
7k views

How to Upgrade Sony Xperia Z3 Compact (D5803) to Android 8.1?

How do you upgrade the Sony Xperia Z3 Compact (D5803) to Android 8.1? There are a number of web pages that attempt to answer this question, but none of them provide every step along the way. These ...
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1answer
51 views

Pattern unlock required when starting phone

AFAIK on Android 7 Nougat, when you set pattern unlock, the user is not required to enter the pattern to power up the phone. However, on Android 8.1 Oreo (I'm running a Wiko VIEW MAX Android 8.1 phone)...
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1answer
28 views

Unable to unlock bootloader for HTC 816G android phone

I unable to unlock the bootloader for HTC 816G. I am trying to do this on a windows 10 laptop. The issue is that when I enter command 'adb devices', there is no device found when the phone is on ...
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1answer
7k views

Fastboot is not providing a token when trying to unlock HTC One M9

I am trying to unlock my HTC One M9 following the instructions on the HTCdev website. When I get to the part where you're supposed to obtain the identifier token, it doesn't give me any errors, but it ...