Questions tagged [bootloader]

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

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23 views

What is the difference between `fastboot reboot bootloader` and `fastboot reboot-bootloader`?

fastboot provides two methods for rebooting a device into the bootloader: fastboot reboot bootloader fastboot reboot-bootloader How (and whyy) are these two commands different and when is it ...
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21 views

Trying to root Pixel XL

I'm trying to root a Pixel XL in order to use 'su' in an adb shell to run gdbserver. I've unlocked a few other phones to do this but the process seems a little different now or it is for this ...
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18 views

Redmi 8 bootloop

My Redmi 8 phone is in bootloop. It got stuck with its Remi logo and does not start. I am trying to unlock the bootloader but I didn't find a way other than mi unlock which I don't know how to use it ...
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1answer
43 views

What does it mean for a bootloader to be locked/unlocked?

What exactly does it mean in this context to be locked anyways?
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42 views

Bootloader won't load any commands

My Bootloader won't do anything, when I type fastboot getvar all it stops giving the strings half way, or when typing any other command it will only give ... and nothing more. Bootloader log only ...
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1answer
78 views

Cannot boot into fastbootd OnePlus 8T

I'm trying to manually flash the factory image on my OnePlus 8T (using this TCD guide). I was able to boot my phone into Fastboot mode using the volume + power keys. I'm able to execute fastboot ...
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44 views

Deny access to fastboot

I'm searching a way to deny access to fastboot mode... I don't care if it will be deleted, just want to deny access but still be able to use the device. I rooted my phone but I didn't find any files ...
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0answers
16 views

How do I enable ROOT Access on my J3 Orbit?

My mobile is a Samsumg Galaxy J3 Orbit/ J3TOP. I've been trying to gain root access to enable superuser on it, but it doesn't work. It doesn't even say that I'm a user or device owner, how do I solve ...
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17 views

Unlocking bootloader for samsung A10 only

Is there any possible way to unlock bootloader on samsung A10..I've tried fastboot I've tried everything..LXDE?..I'm dying here..
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0answers
32 views

Is it possible to corrupt the bootloader from within the System / ROM?

I had a previously working Pixel 3XL, running Dirty Unicorns (flashed in December). I hadn't touched the bootloader / fastboot since then, but just a couple of days ago, I rebooted the phone and it ...
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0answers
21 views

stuck on Bootloop twrp not installing

HI guys my phone is stuck on fastboot, its showing the current image(boot/recovery) have been destroyed and can not boot pressing volume + power put it into fastboot and it shows in adb "fastboot ...
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0answers
48 views

Samsung bootloader unlock but failed to flash custom rom

I go to Settings > About Phone > Software Information then tap the Build number 7 times to enable Developer Options. Then I connected my device to the internet and go to Settings > Developer ...
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0answers
18 views

What does “NOS-production: no” mean?

I recently bought a refurbished unlocked Pixel 3 XL to replace my aging, cracked, broken one of the same model. It came with the bootloader unlocked so I decided to lock it because I didn't like the ...
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153 views

ROG phone 5, Unable to unlock bootloader

i have ROG phone 5, chinese variant with global ROM. i installed Asus Bootloader unlock app which to no luck. i tried to do it via fastboot using adb..tried the following commands fastboot flashing ...
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1answer
23 views

Nexus 5 not appearing in fastboot devices menu

I'm attempting to flash Android 4.4.4 KitKat onto my old Nexus 5, but when I run the fastboot devices command, it does not show my device's serial number. When I try doing the ADB sideload command ...
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Stopped between flashing miui to downgrade 12 to 11 and phone got erased every thing

I tried to flash my phone through mi flashtool to downgrade miui from 12 to 11. But took too much time about one hour. I checked the status which showed mismatch between phone and image. I closed ...
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How can I relock my Xiaomi bootloader without bricking the phone?

I unlocked the bootloader on my Xiaomi Mi A1, and it boots fine. However, after I relocked it (using the top answer here) and rebooted, the phone flashed the white Android loading screen then went ...
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1answer
154 views

How to achieve factory-reset or bootloader mode for Flywheel (Glorystar Nebula rf3288) tablet without buttons?

I've gotten stuck trying to upgrade a Glorystar Nebula 15 kiosk Android tablet (as customized for the orphaned Flywheel spin-bikes) to a vendor-provided single-file Android 7.1 firmware image (7....
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0answers
30 views

How to delete the Multiuser mode in my mobile?

I would like to remove(delete) the Multiuser mode in Realme XT. I want my phone to be simple. I have unlocked bootloader and rooted my phone and removed all useless bloatwares. Can someone please give ...
2
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1answer
58 views

Is it possible to update from Android 4.2 to 4.4 without disturbing the bootloader?

I have, for example, downloaded an update from android 4.1 to 4.2. All it consisted of was 10 new system apps, 5 libraries, 3 fonts, and a new bootanimation. What I would like to know is if an update ...
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0answers
629 views

Bootloader wont unlock on Google Pixel 2 (G011A)

I'm trying to root my Google Pixel 2 but I can't get the bootloader unlocked. The phone is a renewed and unlocked international version, model number G011A. From the bootloader screen, and connected ...
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0answers
77 views

What can be done with a phone that has an encrypted bootloader

I am trying to get a rooted android phone set up for reverse engineering purposes. I tried to root two separate phones (SM-G925A and a Google Pixel 2) but they both turned out to have locked (meaning, ...
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0answers
61 views

How to debug the kernel if the device only boot to fastboot [closed]

I am tring to compile the kernel source provided by the manufacture of my phone(OPPO PCCM00 precisely). Since it's not "well-opensourced", I changed quite a lot to make sure the kernel would ...
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0answers
86 views

What is the format for an Android ROM?

I downloaded a ROM for a Xiaomi phone to see what's inside. It's a zip file, that has these inside: boot.img META-INF system.new.dat.br vendor.patch.dat ...
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0answers
290 views

Unlocking bootloader for vivo Y12

I have enabled oem unlock and usb debug from settings. I am using vivo fastboot tool. And after entering fastboot menu, I tried the code fastboot bbk unlock_vivo. C:\Users\dell\Desktop\...
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0answers
31 views

What creating bootloop when flashing TWRP? [duplicate]

I follow this XDA tutorial to flash TWRP and rooting Samsung Galaxy J250F. However, after flashing TWRP via Odin, the phone only boots into recovery, not system. Even factory reset or empty the misc ...
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65 views

Locking bootloader after vendor build change

So, I have a Mi 10 Lite with the MIUI 12 EEA, and it's not the stock ROM but the Vodafone build (QJIEUVF). As there's the new Android 11 update coming, I'd like to have that and not wait for Vodafone ...
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23 views

Help - MotoG8 stuck on bootloader screen after toddler messing around with phone

As above, my daughter was messing around with my wife's phone and now the phone is stuck on this screen: Bottom 3 lines read: Power low oem_locked Connect usb data cable I've tried both holding ...
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1answer
318 views

Boot loop after messing with the smallest width option in developer options. (Redmi 5 plus)

so I was bored and I decided to check some developer options to see what they can do... I found this option called 'smallest width', at first I set it from 392 to 100 and it automatically set itself ...
2
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0answers
1k views

Help me to Unlock Bootloader on this Chinese phone

I am trying to unlock the bootloader for my device (it's a cheap Chinese phone) and then root using Magisk. The first problem is that OEM Unlock option is not available in developer options, so I got ...
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0answers
16 views

why is my Samsung tablet listed as a modem?

Exactly what the title says. It happens when I boot to the bootloader, while my T295 is connected to my PC via USB cable. How do I fix it?
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0answers
44 views

PIN on lock screen not accepting touch input. Cannot switch on

PHONE / OS Asus Max Pro M1 6GB variant running android oreo (8.1.0) THE PROBLEM My phone after reboot is not accepting touch input at PIN lock screen. Now, I cannot switch it on. A PREVIOUS PROBLEM ...
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1answer
1k views

Device says bootloader unlocked but OEM unlock option can enabled and disabled?

I have a Redmi Note 3 (INDIAN VARIANT Kenzo/Snapdragon variant running on Marshmellow 6.0.1 with MIUI Global 10.2) on which I performed an bootloader unlocking procedure via the tool XiaoMiTool V2 ...
2
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0answers
22 views

Stuck in Bootloader

I have a rooted Pixel 2 XL that I was upgrading the OS on and when I attempted to do a sideload for TWRP, it got all messed up. Now it won't go past the bootloader and keeps randomly rebooting while ...
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0answers
161 views

Cannot root Acer Iconia A500 running on Android 4.0.3

I have an Acer Iconia A500 here that is supposed to be rootable. But I tried and tried. But nothing made the job. I tried using ADB and Fastboot, but it said to me that it can't run the command ...
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0answers
691 views

Help with Nexus 6P bootloop: Couldn't parse partition size '0x' when trying to flash new image

I need help with my Nexus 6P. Because of a bootloop, I was trying to flash a new boot image. I went to the Google download page for factory images and tried using the "flash-all.bat" file. I ...
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0answers
34 views

“failed to find cpu0 device node” error when installing android on vm

I am installing androidx86 on a virtual machine, but when ever I try to install bootloader grub, this happens: and it does nothing except blink the cursor. I have done everything people say to do, but ...
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1answer
172 views

Do I need to root my Pixel 3 phone in order to install GrapheneOS?

I am interested in stalling GrapheneOS custom ROM on a Pixel 3 phone. Does this require that I root the phone?
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1answer
84 views

Samsung phones bootloader unlock

I have a samsung tablet gt-n8000 and I want to flash a custom rom . Should I first unlock the bootloader? if yes , how to do that ? fastboot commands does not work anyway on my tablet so I can not ...
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0answers
174 views

Formatted bootloader by mistake and phone won't turn on (device: MT6570)

I have a Techno Spark 3 with a MT6570 chip and i used the SP Flash Tool to flash the ROM but i kept getting the error STATUS_PARTITION_NOT_FOUND, so i thought that if i format the bootloader it would ...
2
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0answers
560 views

Is it possible to have a custom ROM with a locked bootloader?

I just mention in-advance to please correct me if I'm mistaken on anything, I've a limited tech proficiency. I've a Samsung S9 (Android 10) and I wish to install an AOSP ROM (also on Android 10), but ...
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231 views

using fastboot to turn on Pocophone F1

My power button is broken internally, I can't press it to turn on my phone. How should I turn it back on? This is what I do and fail: Holding volume down and plugging cable I get the fastboot logo, I ...
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0answers
156 views

How do I get fastboot/adb to find my device after a reboot?

I am trying to unlock the bootloader of my Samsung Galaxy J7 Sky Pro using this guide. If I do > adb start-server > adb devices I get my device as connected, however when I then reboot into the ...
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0answers
156 views

Any way to flash a custom rom without twrp recovery?( It doesn't work on my device)

I am trying to root my Galaxy Note 10.1 (sm P605). I've already upgraded the firmware with odin and flashed twrp with odin as well. Now after flashing twrp it boots normally then I switched it off and ...
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0answers
115 views

Android Boot Logs Before Logo

BTW, I am wanting to know what Android Boot Logs come before the Android Boot Logo. I see an Android Boot Logo, and I have to hold the power button, but what does it show in the boot logs in the ...
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0answers
197 views

How to use ODIN with more than a dozen of mbn, bin, img, ext4 files?

I'd like to flash my SM-T813 because it's in a boot loop. I downloaded supposedly the latest firmware. I think it was a tar.md5 file, I peek into this tar file and it's a whole bunch of files: ODIN ...
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1answer
48 views

Galaxy S4 Not Showing in ADB [duplicate]

I want to root a Galaxy S4, yea I know it's an old phone, but perfect for what I want to do. Problem is, once I do adb restart bootloader, the device is no longer on the adb devices list, so I cannot ...
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1answer
204 views

Unlocked bootloader with OEM locked inside system in Oneplus3. HELP?

I have a OnePlus3 device which was rooted(TWRP + magisk + stock rom). But as new rom was buggy, i install old stock rom + stock recovery without root. After installing by mistake i lock OEM from the ...
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0answers
362 views

If I generate my own custom key and sign a custom ROM, then will I be able to have root access after locking the bootloader?

So what I want to do is boot into my own custom ROM with a locked bootloader. I have a OnePlus 6T so it's possible, but can I have root access after I boot with a locked bootloader? If I replace my ...
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1answer
461 views

Meaning of Samsung bootloader codenames?

I realized that you cannot install firmware with older bootloader version than the one in the device. To do things more correctly and safely, I want more fully understand the bootloader codename ...

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