Questions tagged [bootloader]

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

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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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1answer
17 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.
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0answers
30 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 (...
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2answers
9k 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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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
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?
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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 ...
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2answers
547 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 ...
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0answers
51 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 ...
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1answer
913 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 ...
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1answer
63 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).
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1answer
2k 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
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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.
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0answers
10 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 ...
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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 ...
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0answers
68 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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1answer
56 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 ...
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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 ...
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1answer
934 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 ...
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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....
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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 ...
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1answer
90 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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1answer
1k views

Xperia M4 Aqua reboot-bootloader only shuts it down

I'm trying to reboot my Xperia M4 Aqua into bootloader mode but all it does it turn it off and I get the battery charging image as if the phone is shut down and in charge. I tried using the commands ...
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1answer
1k views

HTC one M8 won't flash RUU or unlock Bootloader

I hope u r havin a good day -I just found out that model on the back of the phone is 0P6B100 while it's 0P6B700 in getvar, I found that out after trying all the x.xx.651.x RUUs flashed down below cuz ...
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7answers
26k views

how to add a custom lock for the recovery and/or bootloader?

Unlocking the bootloader and/or the recovery is very popular discussion across many devices. But doing so exposes a very obvious and inevitable issue with security! An unlocked recovery means that no ...
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1answer
1k views

Error installing CyanogenMod: Unsupported bootloader

I am trying to install CyanogenMod 12 on my Moto G 4G XT1040 Peregrine by following this guide from the Cyanogen Wiki. I have: Unlocked my bootloader Installed a custom compatible recovery (TWRP v2....
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0answers
71 views

Upgrading a locked Android 4.4.2

I want to try to upgrade my Huawei Y560-U02 Android 4.4.2 to anything newer but it should at least be Android Lollipop. I opened another thread in regards for this phone in order to get the firewall ...
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, ...
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1answer
1k views

Can I flash an unlocked G900T bootloader on a G900A?

I have a G900A and a G900T (short story: couldn't live any longer with the locked bootloader on G900A so I bought a G900T to use on AT&T). It's possible to flash a custom recovery/ROM onto the ...
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0answers
12 views

Andorid Optimising Apps Bootloop?

Issue: Phone boots, then starts optimising apps (2 of 2), then proceeds to start apps and then restarts right away. Is this technically a bootloop? (since it has booted, started doing some stuff and ...
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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
48 views

OEM Unlock option dosent show up

recently I picked up a Samsung A10E from T-Mobile. Upon enabling developer options, I realized that the OEM Unlock option didnt show up. I tried following a tutorial where you turn off automatic date ...
2
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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 "...
2
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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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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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2answers
1k views

Error “FAILED (data transfer failure (Value too large for defined data type))” While Flashing Nexus 4

I have a Nexus 4 that was soft bricked during an OTA update. I have tried to flash several factory images to it and every time it gave me the error "FAILED (data transfer failure (Value too large for ...
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0answers
60 views

Android TV stuck at boot animation after using `reboot bootloader` in terminal emulator

I used reboot bootloader in terminal emulator of my android TV. Since then it's stuck at boot animation. I tried connecting it to my laptop using USB type A male to male cable and USB type A to C as ...
5
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1answer
159k 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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1answer
3k views

how to succesfully boot into bootloader/fastboot mode on alcatel 5049z smartphone

I am having issues( i am a "novice" when it comes to unlocking a30 android bootloader with a PC...) with booting into bootloader/fastboot mode on my stock rom--android 7--Alcatel a30(non rooted 5049z?)...
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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 ...
7
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1answer
6k 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 ...
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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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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 ...
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8answers
147k 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 ...
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1answer
78 views

Does Android Have a BIOS? [duplicate]

I'm unsure about this one but this is another one of the burning questions I have on the top of my head. Does Android have a BIOS? If not, how does it boot up? What is the software that actually boots ...
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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
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 ...
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0answers
248 views

Unlocking bootloader and rooting lg phoenix 4

I recently purchased an lg phoenix 4 (I'm-x210apm) it is 8.1.0 oreo ive been trying to unlock the bootloader but cant seem to do it. Ive tried just about every method ive found on the internet but ...
0
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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 ...