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

learn more… | top users | synonyms (1)

0
votes
1answer
17 views

Should I re-lock bootloader after flashing developer preview on nexus 5?

I have flashed the Android M developer preview 3 on my Nexus 5 phone, for which I was required to unlock the bootloader. Now that the flashing has completed successfully, should I re-lock my ...
0
votes
0answers
16 views

Unlocking Bootloader on Motorola ET1

I would like to unlock the bootloader on my Motorola ET1, but I have a problem: once I restart the device in the bootloader, it is not recognized by my computer (fastboot devices doesn't detect it) ...
0
votes
1answer
88 views

How to set up BIOS-like password on Android device? [duplicate]

Setting a screen lock password or SIM pin or both is fine for securing some aspects of your mobile device. But what if, as a nasty joke, someone manages to grab a hold of your device and hits the ...
0
votes
0answers
63 views

Unlock Bootloader on RCA tablet

There is many phones out there that can have their bootloaders unlocked. I'm wondering if you can unlock the bootloader on a rca tablet. Any help will be appreciated!
1
vote
0answers
51 views

How can I unlock bootloader of LG Vortex (VS660)

I'm trying to flash CyanogenMod to an old LG Vortex. I believe the first step is to unlock the bootloader. (I have successfully done this to a Nexus 7). I have adb and fastboot installed on LM17. Most ...
0
votes
0answers
90 views

How to unlock Sony Xperia Z1C bootloader?

Is there any way in which i could unlock it if it isnt officially supported? I've managed to get the XZdualrecovery working...
1
vote
1answer
59 views

Nexus 4 screen got hung until battery drained and on restart stuck on flying dots

I have nexus 4 with lollypop installed on it. Yesterday while operating its screen just went to hung state and stopped responding. I could not even power off the phone. Therefore, I let the phone to ...
0
votes
0answers
336 views

Can JFLTE Lollipop ROM be installed on the Verizon Galaxy S4 SCH-i545 with ME7 baseband?

I have a rooted Verizon Galaxy S4 SCH-i545 (edit: NOT GT-i9505) updated to the ME7 baseband version. I would like to upgrade to this Lollipop ROM, which appears to be designed for the GT-i9505, but I ...
0
votes
0answers
270 views

Trying to unlock bootloader using fastboot under Ubuntu

I have a HTC Desire 616 and am following this guide to unlock my bootloader. Fastboot can see my device: sudo fastboot devices E6S4YH6PDUJNBYMJ fastboot However, running this does nothing: ...
0
votes
1answer
426 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 ...
0
votes
0answers
8 views

Is it possible to unlock the Motorola moto g KXB21.14-L1.41 without official unlock code? [duplicate]

The motorola website for unlocking your boot loader tells me that there are no unlock codes for my phone. Does this mean that this phone cannot be rooted? I refuse to accept that. There must be a way ...
0
votes
0answers
152 views

“Locking” a Samsung Bootloader

In order to prevent cold-boot attacks against an encrypted Android filesystem, it has been recommended to keep your bootloader locked at all times with the original factory recovery installed. The ...
1
vote
2answers
844 views

How to do a factory reset when recovery mode, usb debugging and factory reset don't work?

I have a device called "EXEQ SET": http://www.exeq.ru/produkcija/pristavki/os-android/set.html It runs Android 4.1.1. It is spitting out errors like this every other second, making the device almost ...
0
votes
0answers
12 views

unlocked bootloader = sim unlock? [duplicate]

I have a motorola G phone and as part of the developer program I can unlock bootloader of the phone. I am just wondering does this mean I am SIM-unlocked as well? i.e., I can take the phone ...
0
votes
0answers
197 views

Htc stuck on bootlogo. S-on ,boot loader relocked. Cwm installed

My sisters htc desire is stuck in htc logo then a blue screen and then back at htc logo. Can't find a vodafone uk ruu. Hboot shows RELOCKED. and S-on.Any help please
3
votes
2answers
7k views

Nexus 7 Error: Failed to mount /cache

I had a problem with my Nexus 7 (2013, 2nd gen) tablet. I restarted my tablet and when it was rebooting again, it showed "Google" logo and then stood there. I wait it (around 20 minutes) but it did ...
0
votes
0answers
171 views

CyanogenMod on Samsung Galaxy S5 and roaming

I'm getting a Galaxy S5, and would like to put CyanogenMod on it to eliminate the bloatware and get a preferred UI experience. Noticed a big warning on the wiki saying not to use it on Verizon and ...
1
vote
1answer
3k views

Can I fastboot flash a factory image without flashing the recovery?

Factory Images Using Nexus 9 as an example, the flash-all.bat contains: fastboot flash bootloader bootloader-flounder-3.43.0.0114.img fastboot reboot-bootloader ping -n 5 127.0.0.1 >nul fastboot ...
1
vote
3answers
5k views

Will a Factory Reset lock my phone (Samsung Galaxy S2) if it is unlocked, but factory locked?

I know that formatting the SD card will not lock my phone again. But if I Factory Reset my phone, will it re-lock the phone or not?
0
votes
1answer
3k views

Bootloader unlocked [duplicate]

Rooted samsung galaxy s4 using odin& CF Auto root. Then flashed CWM using rom manager. Now I can go to CWM recovery mode (using power+volume up+ home) . I can get NAndroid backup. Does this mean ...
1
vote
1answer
26k 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 ...
-1
votes
1answer
1k views

unlocking bootloader moto g xt1033

I'm trying to root my MOTO G XT1033 DUAL SIM but in the videos I've seen till date it says that you need unlock the boot loader .I saw solution videos to unlock boot loader but all of them says that ...
1
vote
1answer
447 views

Bricked phone due to cut-pasting of apk files

I accidentally cut all the .apk and .odex files from /system/apps/ and pasted onto the SD card instead of copying and pasting them. My phone is totally bricked. Stuck in a boot-loop and factory reset ...
0
votes
1answer
355 views

HTC rhyme shows LOCKED when I turn it on

When I turn my HTC Rhyme phone, it just shows A page that's written ***LOCKED*** at the top and has three android icons at the bottom and have some menu items as below: Bootloader Reboot ...
1
vote
1answer
1k views

Unlocking Bootloader of HTC One X on Windows 8.1 / Linux Ubuntu

How to unlock the bootloader of HTC One X on Windows 8.1? Since I want to install MIUI Rom. When I install the latest version of "HTC Sync Manager", It shows me that the Windows 8.1 is not competible ...
-2
votes
1answer
3k views

Can I flash system.img.ext4 without unlocking bootloader or void KNOX warranty?

I understand that: The secure boot process checks signature of bootloaders, kernel and rootfs, but not /system partition. The Samsung KNOX e-fuse is set to 1 when any signature is bad. Tools such as ...
0
votes
1answer
699 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 ...
0
votes
0answers
1k views

Xperia Z1 Bootloader Unlock Problem

I have been having problems trying to unlock the boot loader on my Z1. I followed the instructions provided by Sony to unlock. I had previously unlocked and relocked the device. However, now when ...
-1
votes
2answers
78 views

Unlocking the nexus 7 bootloader

I want to root my nexus 7 tab. The first step is unlocking the bootloader. I want to know that unlocking will wipe the os or just data? Can I start the tab after unlocking
2
votes
1answer
483 views

Xperia V can I relock my bootloader for Bravia Engine to work again?

I have unlocked the bootloader to try some roms, but too late I understand that this will make the Bravia Engine to stop working... If I relock my bootloader will that make the Bravia Engine to work ...
-3
votes
1answer
739 views

How does the HTC-Dev bootloader unlock process work?

I've been trying to root a phone. For my purposes, at least for the moment, I think the HTC-Dev way is enough - that it will give me a way to root and that I don't need S-OFF. I have looked at the ...
5
votes
3answers
32k views

How to re-lock Android bootloader?

I've unlocked my Nexus 5 by using CF-Auto-Root. I want to undo my actions and return the device to its original state: unrooted and locked. How can I do this?
0
votes
1answer
179 views

Can I use my bootloader-locked phone with a different network?

I just bought an Xperia Z and the bootloader is locked. Do I need to unlock it in order to run it on a new SIM card and can I switch to Virgin? It's OK if I can't: I will just buy a Bell SIM for $10, ...
0
votes
1answer
435 views

Tethering with locked boot loader

A recent OTA update to KitKat removed the ability to tether my phone. I feel very frustrated by this bait and switch since I bought the phone for its ability to tether. The workaround is apparently to ...
0
votes
1answer
652 views

How to install ROM when bootloader is not unlocked?

Accidentally, on stock recovery, I selected wipe data/factory reset which could have uninstalled the ROM on it. So, now my mobile is showing company logo only. My mobile HTC Inspire A9192's ...
1
vote
0answers
1k views

How do I root a Samsung Galaxy S4 SGH-I337?

I have a Samsung Galaxy S4 SGH-I337 with a I337UCUAMF3 baseband. How do I either root it and unlock the bootloader or install a mod? Alternately, can I change it back to a previous baseband and unlock ...
1
vote
1answer
2k views

Installing Android 4.1 or higher on Sony Tipo with permanently locked bootloader

My operator (Telecom HU) has disabled unlocking the bootloader of my Sony Tipo. I would like to get Android 4.1 or higher on my device, but so far this seems impossible. I successfully installed ...
0
votes
1answer
701 views

unlock Xperia Neo bootloader on linux

I was following these instructions to unlock the bootloader on my Sony Ericsson Xperia Neo until I reached steps 9 and 10. There was no extras/google directory or android_winusb.inf file anywhere. ...
0
votes
0answers
11k views

**FAILED (remote: 12 signature verify fail)** HTC One M7

C:\xxx>fastboot flash recovery c:\recovery.img sending 'recovery' (10336 KB)... OKAY [ 1.988s] writing 'recovery'... (bootloader) signature checking... **FAILED (remote: 12 signature verify ...
1
vote
5answers
2k views

Is it possible to enable bootloader unlocking on C6603 (Yuga/Sony Xperia Z)?

I was following Sony's official guide for unlocking the bootloader. However, upon entering *#*#7378423#*#* into the phone App and navigating to Service Info -> Configuration under the Rooting ...
1
vote
1answer
254 views

Incompatible / error connecting as MTP device after unlocking and rooting Nexus 4

I unlocked and rooted my Nexus 4 it shows as connected it shows in my computer But when copying a file, it gives me an error stating "device is unavailable or may have been removed" What should I ...
1
vote
0answers
46 views

Locked out of htc wildfire, need to get some messages of the phone, pretty much at the end of the line [duplicate]

My HTC Wildfire got passcode locked (too many tries), and the Google account isn't working. I need to get some important messages off of it. I don't know much about behind the scenes stuff but I know ...
0
votes
1answer
920 views

How to install Android to any phone very first time?

I know this sounds weird one. But I have a Motorola Photon 4g which has got corrupted or some unstable ROM. I am facing 15-20 blackouts and restarts. This led to think like that. I want to know the ...
5
votes
1answer
6k views

what is a bootloader unlocked phone?

What is a bootloader unlocked phone? How we can make use of it while creating or flashing ROMs? What are advantages of unlocked bootloaders over locked bootloaders? Why does not any OEM generally ...
1
vote
0answers
426 views

How to unlock the bootloader on Verizon Galaxy S3 without phone service

How can I unlock the bootloader without any phone service? Do I have to take out the Verizon SIM to do this? The phone is already rooted and has the super user app. A website said it's possible to use ...
0
votes
0answers
858 views

SE BOOTLOADER v1.6 Problem (FAILED:phone is already unlocked)

I tried to unlock my bootloader with SE BOOTLOADER TOOL but get the message: (bootloader) Unlock phone requested FAILED (remote: Phone is already unlocked!) finished. total time: 0.002s What ...
4
votes
3answers
10k views

unlocked device vs. unlocked bootloader

I've always thought that if a device is unlocked it means that it works with different carriers. If the device bootloader is unlocked, then does this mean the device will automatically work with ...
2
votes
2answers
801 views

Will bootloader unlocking provide access to all the apps in the Play Store?

My flyer doesn't allow few apps to be installed from the Play Store as it shows "This app is not compatible with your device" and this incompatibility is not due to OS. If I get the apk of this app ...
0
votes
1answer
204 views

Atrix 4G update via OTA with unlocked bootloader?

I am running 4.5.91 currently on a rooted and unlocked Atrix. Will I brick my phone by updating to 4.5.141 from OTA source? Can I re-lock the boot-loader if that is the issue?
4
votes
2answers
32k views

Unlock bootloader using fastboot using Ubuntu/Linux

I am trying to unlock bootloader for my HTC Legend. I have ADT (Android SDK according to release 21.1) on my Ubuntu/Linux box. While following the HTCDev instructions to unlock bootloader of HTC ...