Questions tagged [bootloader]

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

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votes
1answer
160k 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 ...
0
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0answers
160 views

Stuck on “Bootloader is unlocked” screen, can't boot into recovery

So I wanted to root my OnePlus 6 after updating to android 10 (OnePlus6Oxygen_22_OTA_041_all_1911142043_dde113e5 3cd0f9.zip) I tried booting into twrp via fastboot using fastboot flash boot twrp.img (...
7
votes
1answer
7k views

How to run adb and fastboot commands from Termux?

Is it possible to run adb and fastboot commands using Termux terminal emulator? I am wanting to run commands from one Huawei T3 7 to another using USB/OTG cable. Need to unlock bootloader but have no ...
1
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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 ...
1
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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 ...
1
vote
1answer
3k 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 ...
0
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0answers
36 views

Mounting bootloader mtdblock backup

I did a backup of android bootloader mtdblock using dd but having trouble to mount it https://transfer.sh/yAxnI/bootloader.img. $ file bootloader.img bootloader.img: DOS/MBR boot sector; partition 1 :...
1
vote
0answers
15 views

Cannot unlock Motorola C following the instructions from Motorola

I have: Created an account with Motorola Enabled developer mode Enabled "OEM unlocking" Enabled USB debugging Disabled the lock-screen PIN I then connected the device to my PC with a USB cable and ...
0
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1answer
2k views

Explain “Don't Downgrade!” warnings when flashing stock firmware

I have a few devices I want to put back from custom roms to stock. On almost every stock rom source, however, there are dire warnings for some devices not to downgrade to stock versions from before ...
0
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0answers
67 views

ADB Root Grant Root Permission to App or Package

I am having a little trouble with my Development Board it is Orange Pi 4B, running Android 8.1 Currently I have access to ADB root and also can modify the system folder or even place files inside ...
1
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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 ...
0
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0answers
91 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 ...
2
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1answer
2k views

Device freezes after trying to reboot with bootloader

I have been trying to unlock my bootloader as per the instructions found here. I already have installed the drivers from Google USB driver folder that comes in Android SDK "extras" folder. However, ...
6
votes
1answer
310 views

Bootloader/BIOS, flashing ROM and correlated risks. Why Android devices are more brickable than PCs?

I have a solid experience of installing different OS (Linux, Windows,...) on PC. I would like to try just for fun to install Linux on a unbranded Android low cost tablet acquired in 2015. I spent some ...
0
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0answers
47 views

Why can I still not receive OTA updates after flashing stock firmware on my Moto G7?

After purchasing a Motorola Moto G7, I rooted it using TWRP and Magisk. After a few months of having it rooted, I decided to undo the process in order to restore the ability to receive OTA updates. ...
0
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1answer
1k 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 ...
0
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0answers
185 views

Unlock Huawei BootLoader- Is brute force the only way now?

Problem So I wanna unlock the BootLoader on my Huawei Mate 9 to install LineageOS on it. I already read that Huawei stopped giving BootLoader codes. Is the only way (for free) now, to brute force all ...
1
vote
1answer
914 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 ...
0
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0answers
48 views

Google Pixel Bootloader unlock

I have a pixel phone struck in boot loop (just show google logo and restarts)! I didnt enable oem unlock and usb debugging ! I want to unlock the phone to reflash the phone! My Recovery also dont ...
2
votes
1answer
137 views

Android device load process (preparing flashing)

Standard Android OS load process looks like (from docs): BootROM (starts with 'on' button) Bootloader Kernel init/mounting Zygote+Dalvik VM System services But I have a difficulties ...
0
votes
1answer
8k 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 ...
0
votes
1answer
286 views

Can “Magisk” hide bootloader status?

I am planning to flash Lineage OS 14.1 on my Lenovo p1ma40 to give it a new life. But I often have to do various payment and transactions using banking apps. As you might know , these apps check for ...
4
votes
4answers
11k 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 ...
1
vote
0answers
165 views

Android Verified Boot and generation of vbmeta image

I'm in the process of unofficial device bringup, and I'm stuck unable to progress due to Android Verified Boot. As per specification Android Verified Boot can be disabled with the --disable-verity and ...
1
vote
3answers
14k 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 ...
0
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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 ...
0
votes
1answer
8k 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 ...
1
vote
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, ...
0
votes
0answers
21 views

What happens in low level when booting a Android Q (10) device?

I have read this article which introduce Linux booting process. However, even if Android system also use Linux as kernel, the surrounding software is greatly different. So I have searched this post ...
0
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2answers
36 views

How can i relock bootloader of infinix smart 2 with or without data loss?

How can i relock bootloader of infinix smart 2 with or without data loss? i haven't install twrp and root device.
0
votes
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 ...
1
vote
2answers
10k 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 ...
2
votes
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 ...
0
votes
2answers
1k 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?
0
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2answers
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 ...
0
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2answers
1k views

Is Multi-Boot Possible in Android?

Can you replace the bootloader of Android to create a UEFI-like environment where you can Multi-boot into another Operating System? I've seen several off-brand phones do this but I'm unsure how they ...
0
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0answers
90 views

LG G4 can't fastboot/reboot bootloader

Ola! I'm playing with a LG G4-H815. When using adb reboot bootloader, the phone just boot on normal mode. When doing the Volume Up + Power button thing, I manage to land on Download Mode but nothing ...
1
vote
1answer
978 views

Unlocking Bootloader Moto G Unable to bootup

I have been trying to unlock the bootloader on my Moto G 3rd Gen, so I can install TWRP Custom recovery and flash a new system image, as my phone will not boot up at all (including recovery mode). I ...
2
votes
1answer
281 views

Is there a way to root an Android phone without unlocking the bootloader?

I've tried almost any method to root my ASUS ZenFone Live, but no one seems to work. Also I only need root, no unlocked bootloader (don't want to wipe data) or custom recovery (not essential ATM).
3
votes
1answer
3k 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?
0
votes
1answer
1k views

My Lenovo Tab 3 7 Essential is stuck in bootloader (LENOVO LOGO

I enabled OEM UNLOCKING and rebooted the device, but it fails to proceed after the boot animation. Please help as soon as possible.
0
votes
0answers
25 views

How to resolve endless bootloop on Kyocera Hydro VIEW (C6742)?

Does anyone know of any method to access the ADB shell, the bootloader, or fastboot mode on the Kyocera Hydro VIEW while it will NOT boot to the Android OS? Similar to the question here (Optimizing ...
0
votes
2answers
2k 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 ...
0
votes
0answers
81 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 ...
2
votes
1answer
248 views

Huawei P9 lite enter bootloader without volume keys and access to system/recovery

About phone: Huawei P9 lite VNS-L21C432B161 (central Europe) First modifications A long time ago i unlocked bootloader and successfully rooted the phone. I turned off OEM unlock option in settings ...
0
votes
2answers
1k views

Nexus 7: Unable to install factory image, stuck in < waiting for any device >

I want to restore factory android on my Nexus 7 2012 WiFi. I'm following the official guide. I start the device in fastboot mode by executiong: adb reboot bootloader This works well. But when I ...
0
votes
1answer
938 views

Samsung Galaxy 2 stuck at start up. Can I recovery the phone or at least the data?

My Samsung Galaxy 2 stuck every time when start up. It looks ok on the beginning, it shows "Samsung Galaxy S II ..." then change display to Vodafone logo then the shows word "samsung" and stuck here ...
0
votes
1answer
891 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 device....
2
votes
2answers
2k views

Trouble Unlocking Bootloader on Android Device (RCA Voyager Tablet)

Okay, so I've figured out how to set up ADB on Mac OS X and I've followed all the instructions on how to get to Fastboot from ADB. The last command I use is: fastboot oem unlock This command in ...
1
vote
1answer
165 views

Can I flash Android on device with overwritten mmcblk0?

Can Android device with fully overwritten /dev/mmcblk0 (without /dev/mmcblk0p* partitions) be still flashed using fastboot? Is it true that overwriting /dev/mmcblk0 does not remove /dev/mmcblk0boot* ...

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