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Tips and Tricks

[Q&A] Unlocking bootloader [error code: 20091]

2019-09-19 11:59:06
9203 15
I'm trying to unlock bootloader of my redmi note 4 sd since 9 months but till now no success.I tried different mi accounts or dev/stable globle roms as well but can't able to unlock help me out...
There are many theories that u have second hand phone or previously logged in different mi account.
but none of them mine i bout it from mi.com. but cant able to unlock it. Waited for too long from 2017.

Unlocking bootloader [error code: 20091]
2019-09-19 11:59:06
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Semi Pro Bunny

Ashraffrko | from Redmi 5A

#1

same error
2019-09-19 16:49:26

Master Bunny

Abycho_LG | from app

#2

2019-09-19 17:20:02
<<<-->>> Mi A2 <<<-->>>
thanks for sharing
2019-09-20 22:28:24

Rookie Bunny

RAFE_ | from mobile

#4

Abycho_LG
Hi,
Follow carefully these instructions:

THANK YOU FOR SHEARING INFORMATION
2019-12-05 18:29:47
Abycho_LG replied at 2019-09-19 17:20:02
Hi,
Follow carefully these instructions:

you can question after upgrading the phone doesn't see SIM card, how to apply to unlock the bootloader
2019-12-24 17:30:12

Master Bunny

Abycho_LG | from app

#6

4169409340
you can question after upgrading the phone doesn't see SIM card, how to apply to unlock the bootloader

It's not possible to unlock the bootloader without SIM card, but backup the important data and try to reset network settings.

2019-12-25 01:48:24
<<<-->>> Mi A2 <<<-->>>
Abycho_LG ответил в 2019-12-25 01:48:24
Невозможно разблокировать загрузчик без SIM-карты, но сделать резервную копию важных данных и попытаться сбросить настройки сети.

I understand correctly, roll back to factory settings
2019-12-25 10:25:39
Invalid floor, the posts have been deleted #8
Getting error again and again please help me with the full guide on how to root redmi note 4
2019-12-27 00:00:23

Rookie Bunny

1741869821 | from app

#10

Getting error again and error code 20091 please help me
2020-03-30 20:53:00
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