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Some bootloaders are locked by the manufactures to prevent the phones from booting unofficial firmware images.

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22 views

Can't unlock RCA (Alco) RCT6873W42 Voyager bootloader

I have an older RCA (Alco is listed manufacturer) Voyager tablet model RCT6873W42 running Android 6.0.1 (kernel 3.14.0+ if that helps). I've enabled developer options, turned on OEM unlocking to allow ...
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0answers
70 views

Unlock Huawei Bootloader

Can I unlock the bootloader of my Huawei P20 Lite that has EMUI 8 for under USD $10? I have tried DC-Unlocker but it had error 375 and they told me it was because of a new security patch so I have ...
0
votes
1answer
30 views

Bootloader unlock HTC Desire 12+

I am trying to unlock the bootloader of my HTC Desire 12+. I tried several tutorials but they all failed. Here is what I did so far: I boot the phone into recovery mode Start the bootloader After ...
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2answers
60 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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0answers
84 views

Install LinageOS on LG G6 H870DS without unlocking the bootloader (which doesn't seem possible)

I have a H870DS and want to install LineageOS on it. So the first step would be unlocking the bootloader and install TWRP. After some research, it seems that I bought a brick: After following the ...
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0answers
16 views

Is there a way to know phone model without open it?

I rooted my Samsung J1 phone and how it can't boot because the FRP lock is on. According to Phone boot loop, Custom binary blocked by FRP lock, then Samsung Firmware Odin: Download & Flash ...
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0answers
33 views

Nexus 5x bootloader unlock only temporarily

I hope you can help me with this strange issue. I looked everywhere, but I can't find an answer. I would like to unlock my bootloader and install TWRP recovery in order to update my mobile to Android ...
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2answers
308 views

On flashing TWRP: Custom binary blocked by FRP Lock

Whenever I try to flash TWRP I get Custom binary blocked by FRP Lock. I'm trying to flash with Heimdall.
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2answers
91 views

OnePlus 5 Soft Brick

I have a OnePlus 5 and it won't boot. The phone is stuck on black screen and blue led (can't boot) since 20 days and I tried everything I saw on the web to make it boot again. I tried : to flash ...
2
votes
1answer
95 views

As of vendors - whose bootloaders are easy to unlock, and whose not?

The vendors differ in their attitude to unlocking the bootloader. Some require codes for unlocking, some not. Some require proprietary, Windows-only software, other not. Which of the vendors are ...
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0answers
22 views

Google Nexus 7 (2013 Wi-Fi) Boot freeze, no recovery options working

I bought a Google Nexus 7 2013 edition, Wi-Fi only, from a yard sale. I have no clue what the previous owner did or tried but I cannot get it to boot. I'm not by any means an Android expert so if it ...
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0answers
32 views

revivir boot de samsung galaxy s3 SGH-T999L

How can I install the boot or make my cell phone work if it does not connect through the adb fastboot? some time ago I downloaded a tool that repaired the boot automatically (only a window of the ...
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0answers
86 views

HTC Desire 626 Verizon Bootloader unlock

I'm trying to unlock the bootloader on a HTC Desire 626 from verizon. at first i got stopped by waiting on device but after that when entering fastboot oem get_identifier_token i get this ... (...
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0answers
238 views

Samsung S6 Active Will Not Boot, AP Rom Flash Succeeds (Bootloader Flash Fails - EDIT: BL Flash Works, Device Still Won't Boot)

(See Update Below) Hi all and thanks in advance for your help. I am having trouble with my S6 Active. It has been stuck in a boot loop for a week now. It was running stock beforehand. I flashed a ...
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0answers
51 views

Unlock device without having access to its OS

I found my old Asus TransformerPad TF300TG and wanted to see if it still worked. However, the device won't go past the boot screen (showing the asus logo). Entering the bootloader mode, I tried to do ...
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0answers
37 views

Sony XPeria T service menu app missing

I just found out that I have a Sony XPeria T, not a Sony XPeria Z1 Compact. After years of owning it. Wow. So I wanted to try some things that I previously discarded because they weren't possible with ...
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0answers
146 views

Moto g4 plus can't be unlocked

When I go to unlock my moto g4 plus, I get a message that my computer cannot be unlocked. This is the getvar all result (bootloader) version: 0.5 (bootloader) version-bootloader: moto-msm8952-B1.07 (...
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0answers
31 views

Where is the “enable developer option” written to?

When enabling "developer option" on device, then the serial number of device becomes known when connecting device to PC, and booting into bootloader. adb devices List of devices attached ...
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2answers
98 views

understanding bootloader unlocking

I am trying to understand the rooting procedure in general. I see that 1st stage involves what it termed as "unlock bootloader". It is described as a method which makes the bootloader capable for ...
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0answers
2k views

Huawei Unlock code site not working - How to get Honor 6X unlock code?

All is in the title : How to get Honor 6x unlock code since this url 'https://emui.huawei.com/en/plugin/unlock/index' is dead ?
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vote
2answers
3k views

remote: oem unlock is not allowed

i did not find any solution on xda-developers, so i am posting this question here. i am trying unlock bootloader on nokia6 when i give command: sudo fastboot oem unlock or sudo fastboot flashing ...
1
vote
1answer
1k views

How to flash a factory image onto a Nexus 5x with locked bootloader?

This happened today: I was using my Nexus 5X when it suddenly started rebooting. It got stuck in a bootloop. It would never boot past the Google logo and I couldn't turn it off. I was able to enter ...
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0answers
39 views

-1: Unknown error while unlocking redmi 3s+ bootloader

So I tried to unlock bootloader of my Redmi 3s+ .It shows error " -1:Unknown error" but it also displays Unlock button .Downloaded the flash tool and rebooted the phone couple of times but nothing . ...
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0answers
391 views

Why running `fastboot -i unlock_code` gives OEM UNLOCK FAILED error?

I am unable to unlock bootloader in Sony Xperia Z5 Compact. fastboot -i 0x0fce OEM UNLOCK FAILED (remote: command not allowed) fastboot -i 0x0fce oem unlock 0xXXXXXXXXXXXX # as suggest by Bo ...
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0answers
77 views

Android Reactivation Lock, is it still functional after phone flashed?

This is the explanation of Reactivation lock by Samsung. Reactivation lock lets you use your Samsung account to prevent others from activating your device if it's ever lost or stolen. With ...
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0answers
28 views

Moto E2 2nd Gen blacked out after software upgrade

I did a stock-firmware update using the following link: https://forum.xda-developers.com/moto-e-2015/general/guide-restore-moto-e-2015-stock-firmware-t3044936 It asked me for some update , i ...
1
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0answers
74 views

Unlock bootloader on Dell Venue 10 5050

I have a bricked Dell tablet that doesn't boot and also a has locked bootloader (Secure Boot: Enable). I've made a full partition dd backup, but now I cannot flash it via fastboot supposedly because ...
0
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2answers
802 views

Recover nexus 5x with locked bootloader and TWRP

I bought a used nexus 5x and got a message saying to lock the bootloader to allow OTA updates. So I did, not fully understanding what my situation was. It wiped the phone and now it won't boot. I ...
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2answers
62 views

Phones that can have bootloaders unlocked

Very new to Android and wish to experiment with custom roms (that require an unlocked bootloader) on an inexpensive used phone. How can I tell if a specific Ebay phone is capable of having the ...
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0answers
19 views

Why does unlocking bootloader require erasing userdata? [duplicate]

I unlocked the bootloader in my OnePlus 5 right after it was delivered, so there was nothing to erase. Then I flashed TWRP and SuperSU. It comes with DM-Verity (and /data force encrypted). I tried re-...
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0answers
75 views

How do I unlock boot-loader on lg e980 from at&t?

I need boot-loader unlocked so I may be able to root. Lg does not supply the program I need. Have looked through all of the applicable XDA help.
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0answers
17 views

Bootloader Nexus 6P [duplicate]

I did the bootloader to install the beta months ago and at the first reboot I saw this screen which I did not give much importance. Now I want to delete it and restore the nexus, how can I do it?
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votes
1answer
130 views

Can I install apps to adopted SD card from recovery?

WhatsApp is stubborn about not installing to SD card. I have an unlocked bootloader, but have not rooted or installed a custom recovery yet. I am trying to avoid rooting because of SafetyNet, and ...
0
votes
3answers
197 views

Can I somehow unlock my phone's bootloader or root it?

My Moto X 1st edition (XT-1060, career Verizon, OS 5.1) doesn't stay rooted. I mean to say that it turns back to unrooted state wherever it reboots or even when it is left untouched for an hour or so. ...
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votes
0answers
850 views

How do I unlock bootloader on LG Optimus zone 3 VS425PP

How do I unlock the bootloader on LG Optimus Zone 3 VS425PP in a simple, easy to follow steps? Then how do I root the device and return to a fully functional cell phone that is stable and rooted. Can'...
0
votes
1answer
342 views

In Galaxy S7, cannot disable Samsung Reactivation Lock

Summary I'm trying to install a custom build of LineageOS following the instructions here. I was attempting to load a recovery image using heimdall when I'm told 'Recovery Check failed'. It turns out ...
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0answers
602 views

Stuck at 99% while unlocking bootloader

I am trying to unlock my Redmi Note 4's bootloader for the last 7 days. I have tried to unlock every day but face the same issue, the process continues till 99% and then it shows an error that account ...
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0answers
322 views

Flashing custom recovery using DD with locked bootloader?

So, I understand that you can flash a custom recovery using DD. I have done this on my Nexus 6p, with an unlocked bootloader. My carrier is Verizon, which loves to lock down bootloaders. I have ...
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votes
2answers
494 views

how to recuperate data from Nexus 5 with broken screen and USB debugging off?

So I was exercising hard and my phone fell ackwardly from the elliptic, the phone died, when I picked it up, my screen was full of lines. The glass does not seem broken but what is under the glass ...
0
votes
1answer
892 views

Flash Soft Bricked Locked Nexus 6P

How can I get my soft bricked Nexus 6P working again? I don't mind flashing it, losing all data etc. I'd rather have it done now than send it away to be fixed. It's caught in a boot loop where it ...
0
votes
0answers
273 views

xiaomi redmi note 4: unable to acquire unlockinng bootloader permission

Straight to the point. I've created a MIUI account through my Redmi Note 4 and applied for permission to unlock bootloader through the official Xiaomi unlocking link. The problem is that after i ...
0
votes
1answer
590 views

Does OEM unlock wipe data?

I am using samsung galaxy j7, in the developer options there is a option "OEM Unlock" if I turn it on will it wipe my data? Also does samsung locks bootloaders? My device is not tied to any carrier.
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votes
1answer
578 views

Unlock Samsung S5(SM-G900W8) bootloader without rooting

I am performing some tests on android devices, to properly do this I need to first unlock the device bootloader and run my tests on the device after which I then root the device and perform the tests ...
0
votes
0answers
416 views

Moto X Bootloader Unlock (Without Sunshine)

Recently I was trying to unlock my Moto X 2014's bootloader and I came a cross this site. However, while I understand the concepts, the actual in practice execution of the exploit is completely ...
1
vote
1answer
683 views

How do I unlock the bootloader on an LG K120 (K4 LTE 2016)?

I got a used LG K4 off eBay and I'm looking to flash a Marshmallow ROM. I tried downloading the SuperSu ZIP file and booting into recovery, but the only option was factory reset. I rebooted and ...
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votes
0answers
550 views

How to Properly Reverse Boot Unlocking

After following instructions to unlock a bootloader and then ones to lock it back, using Fastboot for both, my Android 7.0 phone boots with a warning saying that Your device has failed validation ...
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votes
1answer
1k views

Upgrade a partially Downgraded Moto G4 Plus (XT1644) with unlocked bootloader to Nougat

tl;dr: had a problem rooting on Android N, flashed stock M image. Now running unrooted M, but attempts to OTA upgrade to N fail. I'm unable to relock bootloader by reflashing stock. I think this is ...
0
votes
1answer
101 views

is it required to do unlocking of bootloader before installing and upgraded rom for sm-g550t galaxy on5 and then reroot

i want to know,in order to upgrade from my rooted Samsung ON 5 SM G550T, to Nougate 7.00, will i have to re-root the phone process again. Currently my phone is rooted but i think my boot loader is ...
1
vote
0answers
2k views

Unlock Bootloader on Samsung Galaxy S6 AT&T

I'm trying to root my phone, and I was told that because I own a Galaxy S6, I need to unlock my bootloader. My carrier is AT&T, which makes it apparently even more difficult. I've tried things ...
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votes
0answers
82 views

Huawei P9 Plus Root

Is there an easy way to ROOT my phone? Or somebody who wants to help me with this.