[Mi CC9] Unlock Bootloader, Install Twrp, Backup and Install Rom

[hasanbd4]

Hlw all.
Sorry for late to write this post. I will write this post in several parts. So Don't angry if i am late.
PART 1:

HOW TO UNLOCK BOOTLOADER

First add a xiaomi account on your device.
Now
1. Go settings
2. My Devices
3. All Specs
4.Miui Version
Tap 5 times to activate Developer Option.
Now return settings menu
And Scroll down
Go
1. Additional Settings
2. Developer option
3.OEM Unlocking [ On This]
Now turn on your phone's internet connection through personal data pack.
Now go Mi unlock status and press add account .
Your Device will be added successfully.
You have to wait 10 days for unlock your bootloader.

Xiaomi privacy policy

Now Go xiaomi website and Download xiaomi unlock tool .
You will need a pc or laptop with internet connection for this process.
Extract that zip and open Xiaomi unlock.exe
Login your Xiaomi account.

Backup important Documents on your phone.

Power off your Phone
Press "Power button + Volume down"
for fastboot mod .
Connect your phone through usb cable
Now press unlock
When it will complete 100%, Your device will unlocked and Reseted.

PART 2:

INSTALL TWRP

First you have to Download TWRP. Official twrp is not release. So you have to download unofficial twrp. it is safe and 100% well for Mi cc9. Because i am using this.
Download this from here:
https://androidfilehost.com/?fid=6006931924117916679
And Also download
adb usb driver version 1.4.3.exe
Install this software .
Next you have to enable usb debugging in your device.
Connect via usb cable to your pc or laptop.
Now unzip the twrp file and go that folder .
See many cmd command file in this zip inside.
Just open last one
Now write

adb devices

Screen on your phone and Ok the demon they ask.
Next write

adb reboot bootloader

Now write

fastboot flash recovery (copy full name of twrp and paste here).img

fastboot boot recovery (copy full name of twrp and paste here).img

Twrp will install successfully. just disconnect your phone and press power button + volume up.

Twrp will appear which one you install.

Any help you need just comments here if you failed.
Thats all for today.

 

[dragokanev]

Hi, I unlocked the Boot Loader but now I get a screeen in chinese which I am assuming is asking for my Mi account,phone number or email but every time I type any of those a red messege showes under the box which I am assuming meanes that something is wrong. Does anyone had the same problem and solution because I am pretty sure I know my Mi account and my phone number and they are tiped in correct.

 

[hasanbd4]

Hi, I unlocked the Boot Loader but now I get a screeen in chinese which I am assuming is asking for my Mi account,phone number or email but every time I type any of those a red messege showes under the box which I am assuming meanes that something is wrong. Does anyone had the same problem and solution because I am pretty sure I know my Mi account and my phone number and they are tiped in correct.

Use those phone number and password which one you sing in for unlock bootloader.you need internet connection to complete this process.

 

[majigs]

im stuck at "fastboot boot recovery (copy full name of twrp and paste here).img"
is it the same file "recovery-TWRP-3.3.1-0709-XIAOMI_CC9-CN-wzsx150.img"?

 

[hasanbd4]

im stuck at "fastboot boot recovery (copy full name of twrp and paste here).img"
is it the same file "recovery-TWRP-3.3.1-0709-XIAOMI_CC9-CN-wzsx150.img"?

Yes. You have to write:
fastboot boot recovery-TWRP-3.3.1-0709-XIAOMI_CC9-CN-wzsx150.img

 

[NeoDJW]

easier to rename the file to twrp.img .....

 

[v-shell]

Please help to restore CC 9

Please help me bring my Xiaomi CC 9 back to life. I updated it with MIUI 11.3.3.0.PFGEUXM and my device does not boot normally. My bootloader is locked and an account is not installed in the developer settings. Does anyone know what to do ???

 

[P.Rabbit]

I got error -1 on my smartphone when I added account and device in the '' mi unlock status '' menu.
How to solve
--
Edit:
resolved: I logged out and logged into the Mi account on the device and gave no error
I have to wait 168H to unlock

Tks

 

[sonvegeta]

GSI's are quite good. I have good SOT with ArrowOS GSI: 12h - 13 h. I think it's more interesting to use Pie GSI's for now.

 

[P.Rabbit]

Where can I get this ArrowOs GSI rom?

 

[Lyriax]

Unlock tool stops at 50%

What should I do when the Unlock Tool stops at 50% and reports: couldn't verify the device. Is it because I haven't waited the 10 days yet?

 

[Salieri99]

You have to wait to unlock bootloader.

 

[equiliym]

im stuck at "fastboot boot recovery (copy full name of twrp and paste here).img"
is it the same file "recovery-TWRP-3.3.1-0709-XIAOMI_CC9-CN-wzsx150.img"?

you dont have to boot the image if you flashed it first, if you did 'fastboot flash recovery recoveryname.img', no reason to do the boot part, just do fastboot reboot-recovery

if you dont want to flash twrp over your stock recovery, then use the fastboot boot recoveryname.img and then mess around with twrp, backup everything and flash a new rom and reboot, next time you reboot to recovery, stock will still be there

 

[axlina]

Hello. I'm having problems unlocking my new phone. When i open Mi unlock tool, unlock option is greyed out.
I installed drivers through unlock app and option "install drivers" Also installed adb drivers that I got with ulock app through device manager - add legacy hardware
But something is wrong. Someone please help me.

 

[hasanbd4]

Hello. I'm having problems unlocking my new phone. When i open Mi unlock tool, unlock option is greyed out.
I installed drivers through unlock app and option "install drivers" Also installed adb drivers that I got with ulock app through device manager - add legacy hardware
But something is wrong. Someone please help me.

In this unlock tool folder ( Install Drider) one file exist.
You must install it. Then your device will connect.

 

[axlina]

someone please help me. I unlocked bootloader and trying to install TWRP but everytime I try it's stuck at sending recovery. I've waited for 10 minutes and then I qut. What am I doing wrong?
Commands adb devices and fastboot devices recognize my phone.

 

[TelumLetiferum]

someone please help me. I unlocked bootloader and trying to install TWRP but everytime I try it's stuck at sending recovery. I've waited for 10 minutes and then I qut. What am I doing wrong?
Commands adb devices and fastboot devices recognize my phone.

Unfortunately I can't help you with that but I have a question did you wait 10 days or not cause my phone just refuses to cooperate with the unlock tool. Sometimes the fastboot logo just disapears and it says press any button to shutdown.
Edit: Just to clarify the flash tool does not say anything about the waiting period. If someone can help me or clarify the situation I would greatly appreciate it.
Alright so it appears to either be a USB gen limitation or just my plain ass stupidity for not installing adb drivers. Hell if I know but either way now it says how many days I have to wait so nice.

 

[axlina]

Unfortunately I can't help you with that but I have a question did you wait 10 days or not cause my phone just refuses to cooperate with the unlock tool. Sometimes the fastboot logo just disapears and it says press any button to shutdown.
Edit: Just to clarify the flash tool does not say anything about the waiting period. If someone can help me or clarify the situation I would greatly appreciate it.
Alright so it appears to either be a USB gen limitation or just my plain ass stupidity for not installing adb drivers. Hell if I know but either way now it says how many days I have to wait so nice.

Download 15 seconds adb installer and answer question with three yyy.
I waited 43 hours to unlock bootloader.

 

[kingofmb]

I have performed all the steps successfully, but unable to boot into twrp by pressing power + vol up, still booting in stock one, anybody facing the same issue?

 

[natedogg19283]

I have performed all the steps successfully, but unable to boot into twrp by pressing power + vol up, still booting in stock one, anybody facing the same issue?

It's power button +volume down... Try again