Database Users

A little confused by model/build numbers and un/locked bootloader

I have a SIM free ( unlocked ) P9 lite that I got from Car phone warehouse and I am wanting to update it to the latest version ie nougat. however I am confused by all the different variations ie VNS-L21C10B360 , VNS-L31C185B360, VNS-L31C636B361 etc that are floating around. My device is VNS-L31C432B131, how can i decide as to which update to use.
Also is there a way to determine if my bootloader is locked or not?
Thanks in advance.

Hello,
L31 is the 3GB of RAM version, the L21 is the 2GB of RAM one. Your device is L31, C432 means it's the european firmware and B131 is the firmware version. If you want to update tu Nougat you have to follow the L31 tutorial, and to determine your bootloader status you can do it in this way:
-Turn off the phone
-Press power button and volume up
-Your phone will boot to fastboot mode and you will see if the bootloader is LOCKED (Green) or UNLOCKED (Red)
I suppose your phone is still locked as you don't know how to verify the status

I have tried that and I only got three options.
Reboot System
Wipe data/Factory reset
Wipe Cache Partition
.

Oh sorry, you have to press power button and volume down.
I forgot that power up was to boot to recovery, I apologise!

Ive tried that and the phone just starts as normal

You can try using the computer then..
Download and install adb & fastboot minimal drivers
Allow debug USB in developer settings in the phone
Plug the phone to the computer
In the drivers folder open a CMD (shift + right click)
Type "adb devices" to see if the phone is detected
If yes then type "adb reboot bootloader"

Potato997 said:
You can try using the computer then..
Download and install adb & fastboot minimal drivers
Allow debug USB in developer settings in the phone
Plug the phone to the computer
In the drivers folder open a CMD (shift + right click)
Type "adb devices" to see if the phone is detected
If yes then type "adb reboot bootloader"
Click to expand...
Click to collapse
I have downloaded and installed ADB however I only have 4 items in the Folder
adb ( exe )
AdbWinApi ( dll )
AdbWinUsbApi ( dll )
Fastboot ( exe )
There is no drivers folder

The folder with the 4 files is the correct one, open the CMD there

Thanks for helping ( and putting up with me lol ) it seems that my bootloader is locked, however FRP (?) is unlocked.
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If I am correct would the revolution rom work for me on this device ( https://forum.xda-developers.com/hu...t/24-12-16-revolution-nougat-rom-rc1-t3525138 ) or would I be better with something like this ( https://forum.xda-developers.com/hu...t/android-7-emui-5-0-vns-l31-l21-l23-t3513816 ) or by using this update ( http://www.droidviews.com/update-huawei-p9-lite-manually-official-android-7-0-nougat-emui-5-0/ )

If you want to update to Nougat I suggest you to unlock the bootloader, flash Meticulus' TWRP and then follow this guide:
https://forum.xda-developers.com/huawei-p9lite/how-to/nougat-official-firmware-t3512932

someone use l31c636 please creat file oeminfo help me thanks

Xiaomi Redmi 2 2014811 bricked after updating SuperSu binary in recovery?

I'm not rly good with electronics etc, my phone came with root access permissions via Security MIUI app so I installed SuperSu to manage it easier (MIUI app reqiured to manually check each app to allow access), no custom ROM or anything installed, the way it happened was
1. updated supersu from google play
2. entered supersu app,it asked me to update su binary
3. I clicked yes through recovery
4. it rebooted and got bootlooped.
It's stuck at the "mi.com" screen when turning on, can't go into recovery, fastboot mode only shows an image of Miui mascot without any fastboot options. I've followed some tutorials online and got the thing below from minimal adb.
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"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"
}

sufoc said:
I'm not rly good with electronics etc, my phone came with root access permissions via Security MIUI app so I installed SuperSu to manage it easier (MIUI app reqiured to manually check each app to allow access), no custom ROM or anything installed, the way it happened was
1. updated supersu from google play
2. entered supersu app,it asked me to update su binary
3. I clicked yes through recovery
4. it rebooted and got bootlooped.
It's stuck at the "mi.com" screen when turning on, can't go into recovery, fastboot mode only shows an image of Miui mascot without any fastboot options. I've followed some tutorials online and got the thing below from minimal adb.
Click to expand...
Click to collapse
Fastboot will show that android icon only.
No fastboot options will be available there.
Now you need to perform some steps to recover your device..
Note - Your data will be wiped. Also, remove memory card (if any).
Now let's start the process -:
Download MIUI Fastboot ROM file.
Here's the link..
1GB RAM model - http://update.miui.com/updates/v1/fullromdownload.php?d=wt88047_global&b=F&r=global&n=
2GB RAM model - http://update.miui.com/updates/v1/fullromdownload.php?d=wt88047_pro_global&b=F&r=global&n=
Also extract this file and put in C Drive.
Now turn your PC on..
And install latest Mi flash tool. http://api.bbs.miui.com/url/MiFlash
Turn your device off. By pulling battery. (Assuming that your device is in bootloop).
Go to fastboot mode (power + volume down)
Now turn your PC on.
Open Mi flash tool.
Connect your device.
Click on refresh button in flash tool.
Now, it will show some random numbers. (This is your device).
Now, select your ROM fastboot file which you downloaded and extracted.
After that, choose 'flash all' and click Flash..
It will take some time.
After that your device will be rebooted.
Voila! Your device is back to life!

edit: solved

edit: solved

sethidheeraj06 said:
Fastboot will show that android icon only.
No fastboot options will be available there.
Now you need to perform some steps to recover your device..
Note - Your data will be wiped. Also, remove memory card (if any).
Now let's start the process -:
Download MIUI Fastboot ROM file.
Here's the link..
1GB RAM model - http://update.miui.com/updates/v1/fullromdownload.php?d=wt88047_global&b=F&r=global&n=
2GB RAM model - http://update.miui.com/updates/v1/fullromdownload.php?d=wt88047_pro_global&b=F&r=global&n=
Also extract this file and put in C Drive.
Now turn your PC on..
And install latest Mi flash tool. http://api.bbs.miui.com/url/MiFlash
Turn your device off. By pulling battery. (Assuming that your device is in bootloop).
Go to fastboot mode (power + volume down)
Now turn your PC on.
Open Mi flash tool.
Connect your device.
Click on refresh button in flash tool.
Now, it will show some random numbers. (This is your device).
Now, select your ROM fastboot file which you downloaded and extracted.
After that, choose 'flash all' and click Flash..
It will take some time.
After that your device will be rebooted.
Voila! Your device is back to life!
Click to expand...
Click to collapse
The fastboot rom is incorrect for my model (missmatching image and device error)

sufoc said:
The fastboot rom is incorrect for my model (missmatching image and device error)
Click to expand...
Click to collapse
Which device do you have..?
Kindly tell the model no. Such as 2014818.

sethidheeraj06 said:
Which device do you have..?
Kindly tell the model no. Such as 2014818.
Click to expand...
Click to collapse
It's the same as in the title, 2014811 TD-LTE

Redmi 4 Pro Only Turn On Fastboot

Hi, i flashed my device with this ROM (xiaomi.eu/community/threads/7-9-21.41658/), at the end i reboot and never turn on again, only have access to fastboot, don't even know if is charging.
Bootloader locked again, tried to unlock again and i can't.
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"lightbox_full_screen": "Full screen",
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"lightbox_share": "Share",
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"lightbox_toggle_sidebar": "Toggle sidebar"
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Someone can help?

1. Downloade and Extract Fastboot Rom
http://en.miui.com/a-234.html
2. Download and Install Mi Flashtool
http://en.miui.com/thread-593524-1-1.html
3. Download EDL from fastboot (credit to emuzychenko xda)
https://forum.xda-developers.com/attachment.php?attachmentid=3775693&d=1465328762
4. Download and install Qualcomm usb driver
http://en.miui.com/forum.php?mod=at...MjIzMjc4MDI4NnwyMzUxMDU=&ck=56381677&mobile=2
>power off your phone.
>vol down + power (fastboot mode)
>double click edl Window Coomend Script (.cmd) file
>now you are on edl mode(check device manager)
>open mi flashtool and select fastboot rom folder
>choose clean all option
>refresh
>flash

Thaw Thaw Npt said:
1. Downloade and Extract Fastboot Rom
http://en.miui.com/a-234.html
2. Download and Install Mi Flashtool
http://en.miui.com/thread-593524-1-1.html
3. Download EDL from fastboot (credit to emuzychenko xda)
https://forum.xda-developers.com/attachment.php?attachmentid=3775693&d=1465328762
4. Download and install Qualcomm usb driver
http://en.miui.com/forum.php?mod=at...MjIzMjc4MDI4NnwyMzUxMDU=&ck=56381677&mobile=2
>power off your phone.
>vol down + power (fastboot mode)
>double click edl Window Coomend Script (.cmd) file
>now you are on edl mode(check device manager)
>open mi flashtool and select fastboot rom folder
>choose clean all option
>refresh
>flash
Click to expand...
Click to collapse
Not working, same errors.

fabioziro23 said:
Not working, same errors.
Click to expand...
Click to collapse
I think the folder you extracted the rom must be in C:\ and have no spaces or symbols, e.g. C:\miuirom and not C:\miui rom or C:\miui_rom.

fabioziro23 said:
Hi, i flashed my device with this ROM (xiaomi.eu/community/threads/7-9-21.41658/), at the end i reboot and never turn on again, only have access to fastboot, don't even know if is charging.
Bootloader locked again, tried to unlock again and i can't.
Someone can help?
Click to expand...
Click to collapse
Your device is in locked bootloader, you need to unlock your bootloader first before flashing ane image

T3sla said:
I think the folder you extracted the rom must be in C:\ and have no spaces or symbols, e.g. C:\miuirom and not C:\miui rom or C:\miui_rom.
Click to expand...
Click to collapse
Hi, the images are just an exemeple..
Azrul Haifan said:
Your device is in locked bootloader, you need to unlock your bootloader first before flashing ane image
Click to expand...
Click to collapse
Yes its locked, but it was unlocked, instaled twrp and rom whitout any problem, after reboot to forst boot the bootloader was locked again, i don't know why!
I tried lots of solutions that worked to many people, but anything thats online was useless for me, even the solutions with hardware...
Anyway thanks for replying, but i already solved the problem, just needed to unlock whith miflash unlock and it booted with the new rom i had instaled before locked again.

fabioziro23 said:
Hi, i flashed my device with this ROM (xiaomi.eu/community/threads/7-9-21.41658/), at the end i reboot and never turn on again, only have access to fastboot, don't even know if is charging.
Bootloader locked again, tried to unlock again and i can't.
Someone can help?
Click to expand...
Click to collapse
watch this but i am not responsible for any damage.

Mi A1 Bootloop after ota update and Locked Bootloader

Hi,
I've installed an ota update and the device didn't boot... it is stuck in a bootloop....
When i try to flash via fastboot, it appears an error saying that the device is locked ant cennot erase...
via fastboot oem unlock i get the error message: Remote: oem unlock is not allowed
via MiUnlocker the unlock gets to de 50% and gives an error and on its logs it says: Remote: oem unlock is not allowed
I tryed to flash TWRP with command fastboot flash recovery but the error is the same: remote: partition flashing is not allowed
Can anyone help me please??
I'm stuck on the bootloop i can't go to setting - developer - allow oem unlock option!!

Have you tried doing a Factory Reset from stock recovery?

This is a strange behavior, even if an OTA update corrupted the system for some reason, the phone should boot from the original slot.
Have you tried switching slots manually from fastboot ?

Parnas72 said:
This is a strange behavior, even if an OTA update corrupted the system for some reason, the phone should boot from the original slot.
Have you tried switching slots manually from fastboot ?
Click to expand...
Click to collapse
How can i do that?

Hello!
I've faced the exact same problem yesterday.
You need to force the phone to boot in EDL mode by opening the back cover and short circuit 2 pins as shown in THIS video.
After you have the phone in EDL and being detected by your PC (you need the correct drivers, you may get them on THIS thread by @CosmicDan), you may use MiFlash Tool to flash official PIE Rom, access developer options and enable oem unlock to be able to unlock your phone again.
If you wish to revert to Oreo, please use THIS guide.
Cheers!

Tepig said:
Have you tried doing a Factory Reset from stock recovery?
Click to expand...
Click to collapse
No recovery.. 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"
}

Typhus_ said:
Hello!
I've faced the exact same problem yesterday.
You need to force the phone to boot in EDL mode by opening the back cover and short circuit 2 pins as shown in THIS video.
After you have the phone in EDL and being detected by your PC (you need the correct drivers, you may get them on THIS thread by @CosmicDan), you may use MiFlash Tool to flash official PIE Rom, access developer options and enable oem unlock to be able to unlock your phone again.
If you wish to revert to Oreo, please use THIS guide.
Cheers!
Click to expand...
Click to collapse
Obrigado!
I'll try it now!!

xistolas said:
No recovery.. i get this:
Click to expand...
Click to collapse
Actually you have a recovery. You need to long press the power button and, afterwards (not at the same time), press the volume + button. You'll see that all options will appear.

xistolas said:
How can i do that?
Click to expand...
Click to collapse
fastboot getvar current-slot
to show the current slot,
fastboot --set_active=a or fastboot --set_active=b
to change it.

xistolas said:
Obrigado!
I'll try it now!!
Click to expand...
Click to collapse
get into fastboot mode
hot boot twrp using fastboot command
copy efs backup to twrp backup folder and restore
then go into bootloader mode
flash the firmware using miflash
---------- Post added at 09:27 PM ---------- Previous post was at 09:23 PM ----------
akashavel said:
get into fastboot mode
hot boot twrp using fastboot command
copy efs backup to twrp backup folder and restore
then go into bootloader mode
flash the firmware using miflash
Click to expand...
Click to collapse
follow from step 6 to end in below link
https://forum.xda-developers.com/mi-a1/how-to/tutorial-downgrade-9-0-to-8-1-edl-imei-t3879624

OxygenOS 12 to 11 : BRICKED, msm: "Param preload failed"

Hello,
I tried to make a fresh install of OxygenOS 11 from 12.
After many steps, I am stuck at the bootloader.
Restart and recovery not working, returning to the bootloader.
I can't have access to adb.
I can use fastboot, but can't "fastboot restart fastboot", it simply restart the phone and go to the bootloader.
I tried with MSM and it failed with "Param preload failed".
Can somebody help me ?
{
"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 was in a similar position today and fixed it by using the USB cable that came with the phone and I plugged it into a different USB port than the one I was using. I did, however, have a different error.

RyFax said:
Hello,
I tried to make a fresh install of OxygenOS 11 from 12.
O After many steps, I am stuck at the bootloader.
Restart and recovery not working, returning to the bootloader.
I can't have access to adb.
I can use fastboot, but can't "fastboot restart fastboot", it simply restart the phone and go to the bootloader.
I tried with MSM and it failed with "Param preload failed".
Can somebody help me ?
View attachment 5604615
Click to expand...
Click to collapse
I would try to boot a recovery, sideload an aosp rom and then try to msm, maybe flashing oos 11 firmware/partitions 1 by 1 using an extracted payload before even

RyFax said:
Hello,
I tried to make a fresh install of OxygenOS 11 from 12.
After many steps, I am stuck at the bootloader.
Restart and recovery not working, returning to the bootloader.
I can't have access to adb.
I can use fastboot, but can't "fastboot restart fastboot", it simply restart the phone and go to the bootloader.
I tried with MSM and it failed with "Param preload failed".
Can somebody help me ?
View attachment 5604615
Click to expand...
Click to collapse
Boot into twrp, then install OOS11 zip.
Some error message may occurred.
Just ignore it, reboot see if it can boot normally.
If not working, install OOS11 zip into both slot.

Change your USB cable and/or USB port. Your phone isn't bricked.

The param preload error occurs when u dont have proper drivers installed bro. Try reinstalling the drivers. Then install driver attached in this message. To install it follow the instructions below.
1. Download the attached file.
2. Extract it to desktop.
3. Connect ur oneplus phone to ur computer via usb cable.
4. Open device manager in a separate window.
5. Hold both volume keys and power key together for a while, when the computer recognises the phone in EDL mode, go to the device manager.
6. There will be an unknown device called QHS bulk.
7. Right Click and select update driver.
8. Select browse my computer for drivers.
9. Select browse and navigate to the extracted folder.
10. Select next and install.
After all the above process has been done, disconnect ur phone, restart the device and plug it again opening the msm tool and connect through EDL mode and flash ur phone. The param processing error will not come.
Kindly post ur questions next time in the Q&A page and read the instructions in the unbrick tool page of the forum before attempting to post questions bro.
[OP8PRO][OOS 11AA/BA/DA] Unbrick tool to restore your device to OxygenOS
Disclaimer: By attempting any of the processes listed in this thread you accept full responsibility for your actions. I will not be held responsible if your device stops working, catches fire, or turns into a hipster and claims to have been...
forum.xda-developers.com
The above link is for the unbrick tool page, here is the page with all the flashing tools and drivers.

Use the red OEM USB cable. I was getting the same error, and switching to the red OEM USB cable fixed it.