Questions tagged [bootloader]

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

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Relocking bootloader on Asus Zenfone Max Pro M1 (ZB601KL/ZB602KL)

After a few dozen unsuccessful attempts to make TWRP recovery work and almost bricking my Asus Zenfone Max Pro M1 (ZB601KL/ZB602KL), I gave up and decided to relock the bootloader. But this turned out ...
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Unlocking code for bootloader?

What is that command that's allows me to get the unlock code in order to get my unlock token in my OnePlus Nord N10 5G? I have already issued the commands "get_identifier_token, get_unlock_code&...
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How can I test Android 13 without commiting to it forever?

Google says this about the new Android 13 builds: Warning: The Android 13 update for Pixel 6, Pixel 6 Pro, and the Pixel 6a contains a bootloader update that increments the anti-roll back version. ...
1 vote
0 answers
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Can't boot into bootloader on Oppo F1s

I can't get into fastboot mode on my Oppo F1s (A1601), Android 5.1. Here is what I'm doing: adb and fastboot are installed on Mac I have developer options and OEM unlock enabled In the terminal, adb ...
1 vote
1 answer
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Force boot to bootloader (device always boots to recovery)

I was trying to flash TWRP onto my Android tablet (Lenovo TB-X306F), but something went wrong and it failed. Now, every time I boot, no matter what I do (sending adb commands or pressing physical ...
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If an android device's bootloader has been unlocked before and the bootloader tampered with, can you use adb to check if it was unlocked?

If an android device's bootloader has been unlocked before and the bootloader has been modified, does using adb in a Linux terminal show you that the bootloader was unlocked before by giving the ...
2 votes
1 answer
103 views

Can a hacker unlock the bootloader of an android device remotely?

Is it true that you can not unlock the bootloader of an android device remotely and the only way you can infect the firmware or bootloader is to have physical access to the device. What about rooting? ...
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Bootloader Is Unlocked But Yet Recovery Is Not Flashing (Fastboot Failed error)

I Unlocked My Bootloader And It Is Showing Me In Red Color (Bootloader:Unlocked) But When I Tried To Flash Recovery It Failed. recovery is device specific so no problem in recovery.
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How do I extract the boot image from my ROM on my phone to modify with magisk?

I am trying to root my phone and I need to extract the boot img from the ROM on my phone preferably using the phone itself. Then I will modify the boot img with magisk. How can I extract the boot ...
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How To Charge Android Phone In Fastboot (Bootloader) Mode?

My Android Phone Is Not Charging. Bootloader Shows The Warning Battery Low. I Accedentaly Erased /Boot /Recovery /System Partition. And Because Battery Is Low I Can Not Flash Boot.Img And Recovery.Img....
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Compiling Android Bootloader Little Kernel

I have successfully compiled Android bootloader from git://codeaurora.org/kernel/lk.git It produces a lk.bin file which I assume is the code for the bootloader. How do I pack that file into a ...
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Choosing correct OTA

Android OS crashed. Error Message Android Recovery TCL/REVL_2_5052w/A30ATMO 8.1.0/OPM1.171019.011/VAR4A-0 user/release-keys Think that means 8.1.0 = Oreo API level 27 https://developers.google.com/...
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FRP locked Android tablet [duplicate]

I have an android tablet that I can't get to work because there is a FRP lock, I can't bypass it in any way even with the keyboard trick, I tried to unlock the bootloader, but it fails because OEM ...
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How to recover files from a Pixel 3 XL that cannot boot anymore

My Pixel 3 XL is up-to-date regarding the OTA updates i.e. I have the latest firmware installed. I've never done anything special regarding "tweaking", such as enabling the developer mode i....
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1 vote
1 answer
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Is it possible to dump the internal storage of an unrooted, boot-looping Android 9 with locked bootloader?

Is it possible to dump the internal storage of an unrooted, boot-looping Android 9 with locked bootloader via USB or to SD card, e.g. using some firmware tool in download or recovery mode? If YES, ...
1 vote
0 answers
165 views

Pixel 3 stuck in fastboot loop after flashing factory image

The problem After trying to flash a factory image of Android to my (previously working) Pixel 3, I can now no longer exit the bootloader, nor can I boot into the system. The bootloader simply reads no ...
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0 answers
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My motorola 5g stylus updated and the keyboard for logging in is gone

My information is as follows. My keyboard is the default keyboard. I disabled gboard. The update was last night. I was not logged in when I clicked update, (it was a security update, I turned it on ...
1 vote
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Can't relock bootloader

So i'm trying to relock my bootloader after unlocking it. I have a Realme 5 pro and i tried relocking it using adb and fastboot flashing lock but it gives me the following error: FAILED (command write ...
4 votes
1 answer
420 views

Cannot Unlock Bootloader on Fairphone 4

I have been attempting to install /e/ OS on a Fairphone 4 in accordance with these instructions: https://doc.e.foundation/devices/FP4/install and I am stuck on Step 6 of Unlocking the Bootloader. No ...
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Failing to flash custom (Magisk-patched) boot.img to Samsung S20 FE (4G) with Heimdall

I am attempting to flash a Magisk-patched boot.img from Linux onto my unlocked SM-G780G. I have so far tried doing that using fastboot flash ... to which the device responded that it doesn't know the ...
1 vote
0 answers
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Can't unlock my Acer B3-A30 tablet's bootloader

So I have an Acer Acer B3-A30 tablet, which is stuck on the Acer logo. I'm trying to unlock it's bootloader (with fastboot mode), so I can reflash it (with a stock rom), but it just shows an error ...
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How do I unlock the bootloader of my Honor 20 Lite

I recently tried to unlock the boot loader of my Honor 20 lite but failed, due to Huawei removing the online code request thing. And I thought that this would be the right place to ask. So, whenever ...
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1 vote
1 answer
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Backup Pixel 3 before erasing phone with TWRP

I am attempting to take a recovery/backup of a Pixel 3 using TWRP. I do not need to flash TWRP, just boot from it to perform the backup. Meaning, I don't care if TWRP is installed permanently. The ...
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0 votes
1 answer
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Huawei MediaPad T5 (AGS2-L09) stuck at TWRP

I unlocked bootloader on Huawei MediaPad T5 (AGS2-L09). Then I put TWRP on it and everything was fine until I installed UPDATE-SuperSU-v2.46.zip using TWRP. After that the tablet stuck at Huawei ...
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1 vote
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Google Pixel 2: Is it possible to verify that it cannot be OEM unlocked and why?

Background Apparently, I have bought yet another brand new phone that is absolutely useless and has a value of zero. It is a Google Pixel 2. I would like to OEM unlock it. This option is greyed out in ...
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1 vote
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unlock password screen for htc m8 steps

I have an HTC M8 that is password screen locked. I'm tryin to save the data on this phone. Can't get into settings cause its locked. Tried to install Twrp fastboot but can't I think because usb ...
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1 vote
1 answer
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Error while unlocking bootloader | FAILED (remote: 'Unlock failed - Err:0xffffffff')

I was trying to unlock the bootloader of an old Redmi Note 4x, Downloaded fastboot and adb. I first enabled developer option and turned on USB debugging. I tried finding OEM unlock option which was ...
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1 answer
203 views

Samsung A21s software fastboot is disabled

I have a Samsung Galaxy A21s phone that I am trying to install Android 12 on. I have unlocked the bootloader, I go into the recovery mode and I select bootloader, however when I get there, it is just ...
1 vote
0 answers
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Cannot boot into UPLOAD MODE on SM-T110, kernel panic does not work

I'm trying to boot into UPLOAD MODE on my Samsung Galaxy Tab 3 Lite 7.0, but I can't seem to find a way to do it. I was able to dump this image from the PARAM partition: But the tablet just reboots ...
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1 vote
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50 views

LG Stylus 2 k520DY not going to bootloader and fastboot

I have a LG Stylus 2 k520DY and I want to root it. the problem here is that I can't reboot it to bootloader and fastboot. the adb commands: `adb reboot bootloader` and `adb reboot fastboot` do not ...
1 vote
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300 views

Fastboot doesn't do anything on my device

I've seen similar topics but most of them are on Windows which is commonly solved by updating the fastboot drivers. I'm using Arch, and based on what I've read Linux doesn't even need drivers of any ...
1 vote
0 answers
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Ziox Astra Star bootloop and vertical lines

My old Ziox Astra Star phone started going to boot loop, restarting automatically without launching the OS. So, someone suggested that the ROM could have been corrupted. I remember trying to put it ...
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1 vote
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How to enable the OEM unlocking option if isnt available in the developer options menu?

Im trying to unlock the frp and the phone , based on kirin 710 and 710A, and there is no OEM Unlock option in the developer menu. It has been issued the commands: fastboot -s usb:1-1 oem device-info ...
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1 vote
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how to get out of select boot mode screen

When I power on my ONN tablet, I come to the "select boot mode" screen. The arrow moves up and down by itself, and I am unable to make a selection. I've changed the power button hardware ...
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Bootloader for huawei [duplicate]

How to unlock the Bootloader of a Huawei nova 3i device for free. Can't seem to find anything since Huawei stopped giving codes
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Installing drivers consecutively for all interfaces/ports within an inf file

This concerns an inf file which contain a number of interfaces/ports that need support of drivers. Instead of installing the driver for each interface/port one by one, is there a way to install the ...
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201 views

Asus Zenfone Max Pro M1 boots into CSC FASTBOOT MODE instead of NORMAL FASTBOOT

I was trying to install TWRP on my Asus zenfone max pro m1. But each time it boots into bootloader by adb reboot bootloader it leads me into CSC FASTBOOT MODE. First time I ignored it. But when I ...
0 votes
1 answer
384 views

Pixel 4A ArcaneOS removal/Sideload USB debugging/ unlock bootloader

So I've swapped my Redmi for a used Pixel 4A which has this ArcaneOS installed. The issue is that there is no build number in about phone section so I can't really flash anything. My question is if I ...
1 vote
0 answers
35 views

Is the bootloader button sequence defined in the firmware?

For a custom device that doesn't have the traditional phone buttons and no screen, is there a way to determine the button sequence to enter bootloader? I've seen the article howtogeek.com/249439/how-...
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Installed a bootloader that is too new on a Samsung A40

I have a very simple question and that question is how to fix a phone that is bricked because to bootloader is for a newer version for Android. All it does now is show the Samsung logo and if the ...
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1 answer
515 views

My phone is not entering fastboot mode

I just want to check whether bootloader is locked or unlocked. I am using Minimal ADB and Fastboot which I downloaded from here. I am following instructions to check bootloader from this website. ...
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1 answer
2k views

Device doesn't show up in fastboot [OnePlus Nord]

I installed: the latest platform tools from google the universal adb driver the OnePlus USB driver USB debugging & OEM unlock are on. With the phone turned on everything runs fine. I can copy ...
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201 views

Root an Allwinner 100 based tablet with UNlocked bootloader but limited recovery (no TWRP)

I have an Allwinner 100 based Android tablet with an unlocked bootloader but limited recovery (no TWRP). Now, I want to root it. I've tried: adb shell or adb root from recovery: returns "closed&...
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1 vote
0 answers
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Why Fastboot boot Twrprecovery.img hangs loads after 3-4 tries

Question :- Why Fastboot boot Twrprecovery.img hangs loads after 3-4 tries? I for original backup of Nandroid from twrp recovery from PC computers I load twrp recovery image in bootloader fastboot ...
1 vote
1 answer
108 views

How to access the download mode of a device with a outdated bootloader?

I accidentally flashed some outdated bootloader firmware and now I cannot seem to access the bootloader I tried holding the vol up + power and both to volume buttons + power but it made the phone ...
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1 vote
1 answer
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Recover data, photo, & video from a dead water-damaged Android phone

Question Recover data photo video from a dead water damaged android phone I have a old android mobile which was kept on table on which glass of water falled and water entered the mobile as its ...
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Autodeletion of bootup sound

a noob here My stock rom doesn't have a default boot soundBut my old device has a boot sound(Which means I can change it)Then my question is that how can I set boot up sound on my relatively newer ...
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3 votes
1 answer
320 views

Where is Boot flow screen displayed in android

I have came across Boot flow and when there is based on boot state of a device, it shows different colot screen. YELLOW: Warning screen for LOCKED devices with custom root of trust set ORANGE: Warning ...
1 vote
1 answer
173 views

How to unlock the bootloader of Samsung galaxy grand 2?

I searched the whole internet and couldn't find any guide for unlocking the bootloader of this specific model. my main goal is to install Lineage OS but the instructions on the page don't seem to be ...
1 vote
0 answers
65 views

How to get information parameters from kernel after boot loads android?

when an (Android) bootloader starts loading kernel, it passes some parameters to the kernel (for example androidboot.verifiedbootstate, ...),how to get the information whether boot gets successful or ...

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