How To Guide Lock+Unlock Bootloader - Xiaoxin Pad Pro 2021 [TB-J716F]

[AndrewGr]

Hello! Has anyone ever encountered such a thing that after the bootloader was blocked, the message "Your device is corrupted" appeared, then what is in the picture, and if you click on the "Start" button, then the device reboots and this screen appears again? If so, please tell me how to fix it

 

[fleps]

Hello! Has anyone ever encountered such a thing that after the bootloader was blocked, the message "Your device is corrupted" appeared, then what is in the picture, and if you click on the "Start" button, then the device reboots and this screen appears again? If so, please tell me how to fix it

Follow this guide and see also some comments on the thread https://forum.xda-developers.com/t/...n-p11-pro-2021-original-rom-tb-j716f.4446671/

 

[kEYWASHINGTON95]

Como bloquear e desbloquear o bootloader - Xioaxin Pad Pro 2021 - TB-J716F

Desde que descobri que o Tablet suporta o Project Treble, estou tentando instalar um GSI-ROM nele.
Atualmente, com muitas tentativas e erros, consegui o LiR-ROM para inicializar.
O primeiro passo é desbloquear o Bootloader, então pensei em compartilhar o processo aqui.
Seus dados serão excluídos durante o desbloqueio, tente por sua conta e risco.

Desbloquear Bootloader manualmente
Requisito: PC com ADB Fastboot
1. Vá para Configurações -> Sistema -> Sobre o telefone, clique nele até que as configurações do desenvolvedor sejam ativadas.
2. Vá para Configurações do desenvolvedor e habilite "Depuração USB" e "Desbloqueio OEM".
3. Abra o console e digite "dispositivos adb". Permita a depuração USB se os tablets solicitarem.
4. Digite o comando "adb reboot bootloader".
5. Anote o número de série mostrado na tela do bootloader
Você pode obter a imagem de desbloqueio por meio deste link " http://cdn.zui.lenovomm.com/developer/tabletboot/[seu número sn]/sn.img" ou pelo site
5. Acesse o site ZUI Unlock e solicite a imagem de desbloqueio

View attachment 5432885

6. Você deve receber um e-mail onde você pode baixar um arquivo chamado "sn.img".
7. Faça o flash da imagem com fastboot "fastboot flash unlock sn.img"
8. Digite o comando "fastboot oem unlock-go", o bootloader será desbloqueado agora.
9. Reinicie com "reinicialização de inicialização rápida".
Pronto, seu bootloader deve estar desbloqueado agora.

Bloquear e Desbloquear Bootloader com Batchscript
Recentemente, encontrei um script em lote para dispositivos lenovo em um fórum chinês e o traduzi.
É fácil e conveniente de usar. Para desbloquear você ainda precisa do sn.img do site ZUI Unlock .
Baixar BatchScript​

Me ajudou muito, obrigado de coração.
Fico feliz em saber que não sei nada e que tem gente que sabe e compartilha.
Meu problema foi que o tablet ficou em bootloop quando coloquei a stock rom e bloqueei o bootloader em seguida. Isso causa o erro que o tablet não iniciou mais...

Unlock Bootloader without proper unlock file - Xiaoxin Pad Pro 2021 [TB-J716F]

Hello fellow friend, "Corrupted device" NO LONGER This guide is targetted at those who like me, locked their bootloader and got the message : "corrupted device blabla" And are desperate as Lenovo doesn't answer when we ask for the unlock file...

forum.xda-developers.com

Esse tutorial ajudou muito também a entender o que se passou. Mas no fim eu já tinha tudo que precisava, só faltava a imagem verdadeira com 6kb do tablet TB-J716F. As sn.img que eu tinha não funcionavam. E o site da ZUI não está mais disponibilizando a imagem para o tablet. Se não fosse o seu link para colocar o número de série eu não tinha conseguido.

Enfim, agradeço a todos do fórum XDA por ter me falado quando eu não sabia absolutamente nada a respeito do tema.
obrigado de coração !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

[huracancun]

I block the bootloader and im in a loop, I try to connect with the ADB and not recognizes it and the only thing that i know to do its load the sn.img, but the page is down, what i can do? Can I edit other sn?
My sn is HA1HJC10
http://cdn.zui.lenovomm.com/developer/tabletboot/[your sn number]/sn.img

 

[geraldmany]

Hi! I have the same issue on my Xiaomi Mi 11 Pro (It was Chinese) but it came unlocked with xiaomi.eu rom.
After i installed a global rom, and google wallet nfc pay did not work, so i thought okay i will lock it then so maybe wallet would accept it, (with the eu rom it worked before) so i put the device in fastboot and used fastboot oem lock on cmd...

And from then it stucks on miui recovery 5.0 screen, and says, this miui version can't be installed on this device...

I might not enabled oem unlocking before i shut if off, but i added it to my mi account so i dont know if after a week i can maybe unlock it. But i think the other possible solution would be to sideload the original chinese stock rom, which is for M2102K1AC, Mi 11 pro, codename mars, but i couldn't find it anywhere... If someone can upload a link to it, that would be a huge help! Or any idea! thx!

 

[Czar Augusto]

Hello guys, i am having the same problem
I locked the bootloader and now I don’t know what to do. The site https://www.zui.com/iunlock is do not working anymore i am waiting several days for the sn.img… Please someone give to my email the sn.img the SN is HA1M4L63 i am desperate, i also tried to put my sn in the link and appears the error 404

 

[huracancun]

Hello, i suffered the same problem and the solution is this:

Unlock Bootloader without proper unlock file - Xiaoxin Pad Pro 2021 [TB-J716F]

Hello fellow friend, "Corrupted device" NO LONGER This guide is targetted at those who like me, locked their bootloader and got the message : "corrupted device blabla" And are desperate as Lenovo doesn't answer when we ask for the unlock file...

forum.xda-developers.com

You need to do everything in the post. Easy, my friend

 

[Czar Augusto]

Hello, i suffered the same problem and the solution is this:

Unlock Bootloader without proper unlock file - Xiaoxin Pad Pro 2021 [TB-J716F]

Hello fellow friend, "Corrupted device" NO LONGER This guide is targetted at those who like me, locked their bootloader and got the message : "corrupted device blabla" And are desperate as Lenovo doesn't answer when we ask for the unlock file...

forum.xda-developers.com

You need to do everything in the post. Easy, my friend

I tried to do everything but now I'm stuck, I managed to change the fpinfo and frp files but when I enter adb a message appears saying that there are no devices.. and now I can no longer reverse the process of my serial number because of the error that appears.. If you know what can i do tell me please

 

[ferreol-fr]

I tried to do everything but now I'm stuck, I managed to change the fpinfo and frp files but when I enter adb a message appears saying that there are no devices.. and now I can no longer reverse the process of my serial number because of the error that appears.. If you know what can i do tell me pleaseView attachment 5782159View attachment 5782161View attachment 5782163

If you can try another computer or at least another USB controller.

 

[Czar Augusto]

If you can try another computer or at least another USB controller.

Now i am having another problem and tried to put the sn.img, but the adb show this message (i already press the +volume and put the cable), my device is not found

 

[ferreol-fr]

fastboot is a different mode from adb.
You Can try fastboot devices, to check.

 

[Czar Augusto]

fastboot is a different mode from adb.
You Can try fastboot devices, to check.

now it shows my device, then waht command i need to do?

 

[ferreol-fr]

now it shows my device, then waht command i need to do?

Read !

 

[Czar Augusto]

Read !

I know but i need the sn.img this link does the error 404 http://cdn.zui.lenovomm.com/developer/tabletboot/HA1M4L63/sn.img and the site https://www.zui.com/iunlock is in maintence, i tried this way https://forum.xda-developers.com/t/...k-file-xiaoxin-pad-pro-2021-tb-j716f.4488343/ but got no success, i stuck on the step 13 and my device did not appears when i use the commands of the 14-15

 

[ferreol-fr]

I know but i need the sn.img this link does the error 404 http://cdn.zui.lenovomm.com/developer/tabletboot/HA1M4L63/sn.img and the site https://www.zui.com/iunlock is in maintence, i tried this way https://forum.xda-developers.com/t/...k-file-xiaoxin-pad-pro-2021-tb-j716f.4488343/ but got no success, i stuck on the step 13 and my device did not appears when i use the commands of the 14-15View attachment 5782899View attachment 5782901

So, read here

 

[Czar Augusto]

So, read here

Excuse my ignorance but correct me if I'm wrong.
Do I need to put it in bootloader mode and after that perform the following commands in unlockbootloader?

 

[ferreol-fr]

I tried to do everything but now I'm stuck, I managed to change the fpinfo and frp files but when I enter adb a message appears saying that there are no devices.. and now I can no longer reverse the process of my serial number because of the error that appears.. If you know what can i do tell me please

If you have changed your SN to HAHAHAHA your sn.img is http://cdn.zui.lenovomm.com/developer/tabletboot/HAHAHAHA/sn.img
Like indicated !

 

[Czar Augusto]

If you have changed your SN to HAHAHAHA your sn.img is http://cdn.zui.lenovomm.com/developer/tabletboot/HAHAHAHA/sn.img
Like indicated !

Yes I know, it's just that I ended up reverting the SN to my legitimate one waiting for them to send me an email, but it's been 4 days still and nothing..
I reverted because I got stuck in these last few steps

 

[Czar Augusto]

If you have changed your SN to HAHAHAHA your sn.img is http://cdn.zui.lenovomm.com/developer/tabletboot/HAHAHAHA/sn.img
Like indicated !

I should try with the oldest original chinese rom or the last one that was put on it when it became locked?


Because I already tried all the ways and when I change my SN to HAHAHAHA and execute the commands 14. fastboot flash unlock sn.img 15. fastboot oem unlock-go "waiting for device" appears in unlockbootloader

 

[devexa]

Hello everyone,
I tried to get my unlock file, but I got the Error 404 using the link provided by OP. I've emailed [email protected] 3 days ago but got no response...
Is there any way to get the unlock file ?
I don't want to refer to HAHAHAHA method just in case it gets patched. This, is why it is important to me to have my unlock file.
My bootloader is already unlocked, and I want to lock it back to get L1 certificate back, but before doing that I need to have my unlock file just in case something goes wrong.
My SN is : HA1Q1YNF
Thanks in advance !