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

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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 ...
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1answer
2k 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 ...
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127 views

Is it possible to unlock bootloader in Ainol NOVO7 Fire?

My device is Ainol NOVO7 Fire 20130506.tm.v5. I can't bring the device to bootloader menu (and fastboot mode as well): $ adb reboot bootloader leads to reboot to normal mode. 'Vol-' + 'Power' ...
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135 views

Android hangs on boot image after changing boot image

I changed the bootimage of an Android device and it bricked. It's freezing at the boot image. I try to install a ROM using fastboot but I have a permission error. I try to connect with adb but I ...
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1answer
618 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 ...
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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 ...
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1answer
416 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 ...
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1answer
635 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. ...
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**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 ...
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797 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 ...
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1answer
2k views

Error in unlocking bootloader in xperia ray with testpoint method

I was following guide to unlock my bootloader while preserving DRM data. http://androidflip.com/unlock-xperia-phones-bootloader-without-losing-drm-data-track-id-working/ Everything went fine except ...
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2k views

SE x10 will no longer boot

I am wondering if anyone can help me with my situation. I was using JAF 2.3.7 Rom for about 3 months with no issues. After installing Prey as well as Dropbox (only 2 new apps) the phone started to ...
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1answer
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Can I lock android phone to one network if it is unlocked?

Can I lock android phone to one network? If can be unlocked if I have both lock and unlock code? I want to lock my android phone to use only one network.
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2answers
68 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
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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 ...
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1answer
2k 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 ...
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1answer
638 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 ...