Database Users

unable to lock bootloader moto g4 plus :-> XT1643

I have moto g4 plus. recently i rooted it and everything worked fine
but when i applied the nougat ota upgrade
i m unable to downgrade it to mm stock ROM or stock ROM
neither, able to lock bootloader even cant flash with recovery
every time i flash it it shows "preflash validation failed " and "piv sign not valid " for the boot and recovery image
my stock ROM is not corrupt
one more thing it also display's "security version downgrade"
pls guys help me

1. enable developer option
2. enable oem unlock
3. get unlock code from motorola website
4. unlock via fastboot
Sorry, misread. I think you want to unlock BL.

Did you read XDA rules...? Did you search...?
There is already a thread for ReLock issue..
As you will read,
You can't downgrade bootloader if once updated...
Don't Mess with bootloader unless want a brick....
According to my views, there are no benefits for ReLocking unless want to sell phone and make buyer fool... LoL...

[Q] unlocking relocked asus zenfone max z010d

I have twrp installed but i just typed fastboot oem lock now my bootloader is locked but i m on twrp how can i unlock bootloader.... since i m blocked from asus fota server so i cant unlock by signed unlock tool..... plz help me i think i need the oem unlock code...... or if any one can provide me the same models oem unlocked image file and i may flash that to unlock boot loader.... plz help guys.....
And does any of the auto root tool works for asus zenfone max android 6

Please reply to this post, someone

same problem here , have you found the solution?

I too have the same problem. I even bricked my phone dong os, ended up flashing using flash tool. Now, the bootloader is locked and unlock tool is not working. Someone help

[email protected] said:
I have twrp installed but i just typed fastboot oem lock now my bootloader is locked but i m on twrp how can i unlock bootloader.... since i m blocked from asus fota server so i cant unlock by signed unlock tool..... plz help me i think i need the oem unlock code...... or if any one can provide me the same models oem unlocked image file and i may flash that to unlock boot loader.... plz help guys.....
And does any of the auto root tool works for asus zenfone max android 6
Click to expand...
Click to collapse
use Fastboot oem unlock command via csc/fastboot mode

debadri1995 said:
use Fastboot oem unlock command via csc/fastboot mode
Click to expand...
Click to collapse
ot doesnt work bro.... it says command fails..... i want a way to know what is the default code for oem unlock of my device

Me too same case. Someone please help. The unlock tool does not help either. Please help.

Someone please help us, we are so helpless

i hv a same prob too.... someone help please...

volte lost and bootloader locked
Hey everyone, i recently flashed the cleanmax rom and i lost my volte for ever.
So after this incident, i thought i must flash the stock rom using fastboot. :it didnot work:
so i deep flash the rom using edl mode and guess what i lost the imei,serial no. and my bootloader got locked again.and i got the lollipop rom.
i somehow manage to write the imei and serial no. and updated my rom to mm.But now i cannot unlock my bootloader again.And volte is still not working anybody please help i am a broke person and i cannot buy a new phone.please please help

[email protected] said:
I have twrp installed but i just typed fastboot oem lock now my bootloader is locked but i m on twrp how can i unlock bootloader.... since i m blocked from asus fota server so i cant unlock by signed unlock tool..... plz help me i think i need the oem unlock code...... or if any one can provide me the same models oem unlocked image file and i may flash that to unlock boot loader.... plz help guys.....
And does any of the auto root tool works for asus zenfone max android 6
Click to expand...
Click to collapse
There is no way u can re unlock the bootloader,but there is a workaround.Flash the beta marshmallow rom for 8916,watch the youtube video and check description,its a trick how to flash the beta.then simply flash twrp.the beta rom allows to flash twrp through fastboot.I found this method by myself over a month time

Need Help Can't Unlock BootLoader XT1700

Hi guys, I will appreciate if someone can help me. The things is:
I erase system.img from recovery and I backup from XT1706. After I found a site with stock XT1700 rom I downloaded last version which is the S503 I used SP Flash Tools and everything goes well. But when I tried to unlock Bootloader again adb windows said: This operation is not allowed. I tried everything but I wasn't able to unlock Bootloader again. So I downloaded the first version (S116) and surprisingly I could unlock Bootloader. But I get no notification of OTA updates it says that phone has the last version which is not true. Any ideas of what could be happening here? Thanks of hand for you help.

If you downloaded the ROMs from http://motorolastockrom.com/motorola-moto-e3-xt1700 then I suspect the problem is the ROMs have locked boot loaders. I tried installing the S503 version and the S302 version and had the same problem as you. In the end I ended up installing an XT1706 firmware and was able to unlock the bootloader, but sadly it is the same release date and adroid patch version as the XT1700 ROM I was on to begin with (S124)

frp lock? how unlock?

hi,
i bricked my phone but now i have access twrp 3..03 the bootloader.
the frp is locked how can i unlock it?
i have no os installed, if i try to install lineage i get a code error 7, and when i reinstall Aosp nothing hapens.
I tried to reinstall an image with fastboot but i get waiting for devices even if i m in the bootlader.
i think i need to unloch the frp how can i do that?
thks

Follow this method https://forum.xda-developers.com/nova-plus/help/to-stock-using-fastboot-t3708585

Impossible to unlock bootloader and root Zenfone 3 Max Zc520tl X008D Oreo

Hi please help me I'm desperate.
This is my horrible phone
Zenfone 3 Zc520tl X008D with Oreo 8.1
I would like to root it with magisk but I have a lot of problems.
FIRST. I have to unlock the bootloader but Asus didn't release the tool for Oreo.
I tried to unlock through fastboot using these following commands
fastboot flashing unlock
fastboot oem unlock
But nothing happens. How can I unlock the bootloader?
SECOND. I didn't find, in the case I will be able to unlock the bootloader, TWRP recovery or better I found TWRP in a guide about rooting this model but with Nougat OS. The question is. Can I use this TWRP for Nougat or I need a TWRP designed for the model with Oreo?
An alternative, I found here a guide to root this device without TWRP patching boot.img with Magisk Manager and flashing it through fastboot. Could it be a valid solution?
But please help me to unlock this bootloader. I will never buy again asus ZenFone. They disappeared a d if I ask for the unlock tool Oreo they answer: we will refer this to our technicians

GioAl85 said:
Hi please help me I'm desperate.
This is my horrible phone
Zenfone 3 Zc520tl X008D with Oreo 8.1
I would like to root it with magisk but I have a lot of problems.
FIRST. I have to unlock the bootloader but Asus didn't release the tool for Oreo.
I tried to unlock through fastboot using these following commands
fastboot flashing unlock
fastboot oem unlock
But nothing happens. How can I unlock the bootloader?
SECOND. I didn't find, in the case I will be able to unlock the bootloader, TWRP recovery or better I found TWRP in a guide about rooting this model but with Nougat OS. The question is. Can I use this TWRP for Nougat or I need a TWRP designed for the model with Oreo?
An alternative, I found here a guide to root this device without TWRP patching boot.img with Magisk Manager and flashing it through fastboot. Could it be a valid solution?
But please help me to unlock this bootloader. I will never buy again asus ZenFone. They disappeared a d if I ask for the unlock tool Oreo they answer: we will refer this to our technicians
Click to expand...
Click to collapse
The Oreo update came in 2018 and i doubt they release anything 2 years later. And i think that tool is required to even be able to use those commands in fastboot. So if you want to unlock bootloader you should downgrade to an older version and use the tool , which i am currently looking for.