Database Users

How to verify if bootloader is already unlocked or not?

I'm planning to flash the Qualcomm specific patches to my device, which requires unlocked bootloader.
So without going through all the trouble, I want to make sure if my device's bootloader is already unlocked or not.
Is there any easy way to check my bootloader status?
I'm running stock unrooted KitKat 4.4.2

jodiac said:
I'm planning to flash the Qualcomm specific patches to my device, which requires unlocked bootloader.
So without going through all the trouble, I want to make sure if my device's bootloader is already unlocked or not.
Is there any easy way to check my bootloader status?
I'm running stock unrooted KitKat 4.4.2
Click to expand...
Click to collapse
Turn off your phone and turn it on again. At the Google boot logo, if you see an unlocked lock icon at the bottom of the screen, then your bootloader is UNLOCKED.
Something like this:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

The above post is definitely the easiest way, but this app takes it a step further and tells whether it's ever been unlocked or not, as well as its current state
https://play.google.com/store/apps/details?id=net.segv11.bootunlocker

hp420 said:
The above post is definitely the easiest way, but this app takes it a step further and tells whether it's ever been unlocked or not, as well as its current state
https://play.google.com/store/apps/details?id=net.segv11.bootunlocker
Click to expand...
Click to collapse
Alright since I don't have root access this app is not working for me. But thanks anyway ?
Sent from my Nexus 4 using XDA Premium 4 mobile app

Stuck in Boot loop

Hey i am trying to fix one customers phone and its stuck in boot loop, this screen:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
I read a lot and figured i would have to put the phone in fastboot and flash to stock. When i am trying to do that it says my bootloader is locked so i unlocked it but whenever i type any command it locks the bootloader again.
heres the phone in fastboot mode:

kaboose786 said:
Hey i am trying to fix one customers phone and its stuck in boot loop, this screen:
I read a lot and figured i would have to put the phone in fastboot and flash to stock. When i am trying to do that it says my bootloader is locked so i unlocked it but whenever i type any command it locks the bootloader again.
heres the phone in fastboot mode:
Click to expand...
Click to collapse
I'm intrigued by that message at the bottom of your image- Device bootloader is makoz30d Update requires makoz20i. Now, makoz30d is the android 4.4 bootloader while makoz20i is the android 4.3 bootloader. Is there some rom confusion here?

A bootloader locking itself automatically after a manual unlock is a sign of a failed emmc (memory chip). This is a hardware issue and cannot be resolved unfortunately.

lolcakes203 said:
A bootloader locking itself automatically after a manual unlock is a sign of a failed emmc (memory chip). This is a hardware issue and cannot be resolved unfortunately.
Click to expand...
Click to collapse
+1
Sent from my Nexus 5 using XDA Free mobile app

FRP Locked in bootloader

Hello,
I have a P9 lite VNS-L31 and I'm trying to gain access to root again.
In December I unlocked the bootloader and managed to root it but after a while the phone got an update and it lost the root access.
The actual version is EMUI 4.1.1 VNS-L31C432B161.
When I try to press Power button + volume up it goes to "Verifying update package" until 5% and the I get this:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
When I go to bootloader:
Could please someone tell me how to proceed to unlock the FRP?
I'm sorry if this has been asked before but I searched everywhere without a real solution.

ziovelvet said:
Hello,
I have a P9 lite VNS-L31 and I'm trying to gain access to root again.
In December I unlocked the bootloader and managed to root it but after a while the phone got an update and it lost the root access.
The actual version is EMUI 4.1.1 VNS-L31C432B161.
When I try to press Power button + volume up it goes to "Verifying update package" until 5% and the I get this:
When I go to bootloader:
Could please someone tell me how to proceed to unlock the FRP?
I'm sorry if this has been asked before but I searched everywhere without a real solution.
Click to expand...
Click to collapse
FRP Lock it's for google verification, if u unlock this option u ll still not be able to flash weird packages, so better keep locked that FRP and not try the three buttons method, use Firmware finder

@up
need help with that too!

Have a problem with installing official firmware

Hi everybody,help me i if you can,please
I have only "modified" Software status in the bootloader(even after flashing stock firmware).Now i have more lags then after first week of using phone,and the sound became more cheep(it is hard to listen song on my phone)
Question is next.
How can i flash official firmware and get "Official" Software status in the bootloader?I think this situation is consequence of my multiple rooting and flashing castoms
P.S. Added screenshot and sorry for my english level
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

You would need to relock the bootloader to get that to go back to official. I don't believe there is a way to do so currently.
Having an unlocked bootloader won't cause audio issues, just an FYI

Karlinski said:
You would need to relock the bootloader to get that to go back to official. I don't believe there is a way to do so currently.
Having an unlocked bootloader won't cause audio issues, just an FYI
Click to expand...
Click to collapse
So as I understood,I need to flash it again and relock bootloader again?

That would get you back to full stock. However, like I said before, I don't think there is a signed bootloader image anywhere, so I don't think you can fully lock that back up yet.

Karlinski said:
That would get you back to full stock. However, like I said before, I don't think there is a signed bootloader image anywhere, so I don't think you can fully lock that back up yet.
Click to expand...
Click to collapse
Thank you I will try this

I was able to relock bootloader using this guide:
https://forum.xda-developers.com/showpost.php?p=72789290&postcount=16
Not sure if it will work for all model variants but it did for mine...

surrealjam said:
I was able to relock bootloader using this guide:
https://forum.xda-developers.com/showpost.php?p=72789290&postcount=16
Not sure if it will work for all model variants but it did for mine...
Click to expand...
Click to collapse
Thank you

[GUIDE] Xiaomi Mi Max 3. Recover bricked phone with bootloader closed and no Xiaomi account. "This MIUI version can't be installed on this device"

Ok, here is a Tutorial if you have a closed bootloader and installed the wrong stock version. Phone doesn't boot with message:
"This MIUI version can't be installed on this device". If you have this problem, because, for example, you have flashed global version and your phone is chinese, read this carefully.
First, you need yo open phone and use the test point method to enter EDL mode.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
You have to completely turn off the phone, i recommend plug out battery. Then you must pin these two, and plug usb.
Open MiFlash, then click on reflesh button, you must see COMX port detected. If you see some letters and numbers you are not in EDL mode, so turn off all, and try again.
Then download your GOOD stock version.
There must be a tag.gz compressed file, uncompress it to C:\rom.
THIS THE MOST IMPORTANT Part:
Download this (all credits to Channel TTA):
https://bit.ly/noneedauth
Uncompress it to C:\rom\image and replace the file. This is for avoid the EDL authorization, in my case, I didn't have my Xiaomi account linked to my mobile...
Then press flash, and wait.
You will have the mobile working, you must enable dev settings, then enable OEM unlock in dev settings, (keep pressed for 5 seconds the OEM Unlock option), then link your account with your phone.
After doing this you can unlock bootloader from fastboot, and install custom ROMS, or ROOT.
I hope this guide helps someone, who had bricked his phone and have the bootloader closed.