How To Guide [MIUI12~13 A11~12.0/12.1][UNLOCK][ROOT] Picture guide unlock bootloader, flash custom ROMs & root Xiaomi Poco X3 Pro

[Phrak]

6.

DON'T DO STEP 6 ANYMORE after done it ONCE. Will reset countdown timer if you do that.

• SIM card inside phone with mobile data doesn't need to be the one linked to Mi-account. Can put a different SIM card as long as it can use mobile data.
• Only during step 6 you turn off WIFI and turn on mobile data.
  Can do whatever you want to WIFI and mobile data anytime before and after step 6. There's no restriction other than step 6.
• Can remove your SIM card once step 6 was done. But you still need the number linked to Mi-Account accessible to receive SMS if Mi-Account ask for verification.

Thanks for putting this guide together.
I'd like to request 1 change that will help future readers please:

Move point 6 RED warning text to the START of #6 so that people read that first.

I unlocked my account a year ago when I first received the device, but never actually unlocked the bootloader at the time.
Now I have to wait another 7 days because I pressed the unlock button again today while running through the guide.

 

[pl1992aw]

Thanks for putting this guide together.
I'd like to request 1 change that will help future readers please:

Move point 6 RED warning text to the START of #6 so that people read that first.

I unlocked my account a year ago when I first received the device, but never actually unlocked the bootloader at the time.
Now I have to wait another 7 days because I pressed the unlock button again today while running through the guide.

Had the sentence repeated in the beginning of step 6.

 

[Kryspus]

Hi, im reading all about ARB over an few houers and i have mess in my head.
Currently i have unlocked bootloared, TWRP installed, and installed ArrowOS via TWRP like in the guide in first post.
I would like to have rom that is not so much diffrent than official one.
I have downloaded xiaomi.eu_multi_POCOX3Pro_V12.5.5.0.RJUMIXM_v12-11.zip from here https://xiaomi.eu/community/threads/miui-12-0-12-1-12-2-12-5-stable-release.56191/ (12.5.5.0 matched my stocked rom i had before i started all the process, i had global rom but this one is called multi)
Is it official rom? looks like its based fully on official but when we talking about ARB it have great importace, becouse if its not official i can safely install it without worring about ARB index (like the ArrowOS right?), but if its official i have to know the ARB index before instalation!
If im wrong please tell me.
The Xiaomi ADB/Fastboot Tools shows me: Anti version: 2. (like in the first author post)
So i was trying to check ARB index in my downloaded rom (the one i mention above).
Its zip file so i can't check the ARB numer like guides say about tar.gz roms.
Well i was tried to ARB some HEX editor, but i can't match te line who says "1" or "4" about having or not having ARB.
Please help me, waht should i do now?
PS. All this for having root ofcourse..

Edit.
I have found answer here:

MIUI 13 - MIUI 13 STABLE RELEASE

Going to get a Xiaomi 12T Pro today (DITING) and I assume it comes with MIUI 13 (Android 12). Used Xiaomi.EU roms before on older devices which used Android 10/11 and had to get bootloader unlocked. Just to make sure, with Android 12, there's no need to unlock bootloader (as per instructions it...

xiaomi.eu

It's not stock rom, and i can flash it safetly. They say also i can easly remove ARB protection from stock roms and install them like any other custom rom? I have worries about it..
I have flashed succesfully this rom mentioned above and after flashed MIUI 13 version and now will be doing MIUI 14. Magisk installed sucesfully with this thread first post guide via TWRP. THX

 

[antonioveneroso]

Hello! Sorry to bother you with this noob question: I have android 12 (12 SQK1.211006.001) with MIUI 13 (MIUI global 13.0.9): do I need to do something special to install Arrow-v13.0-vayu-OFFICIAL-20230117-VANILLA? I am readying the guide but don't fully understand step 8.
Thank you for your help!

 

[Hàn Thanh Hà]

Hello! I'm new here and sorry for my noob question: I read that unlocking boot loader will cause Find Device no longer available, but I am using an Poco X4 GT with unlocked boot loader, running MIUI 14 EU and I still can use Find Device with my phone! Is there anything wrong woth my phone and/or any reason for that? Thank you

 

[pl1992aw]

Hello! I'm new here and sorry for my noob question: I read that unlocking boot loader will cause Find Device no longer available, but I am using an Poco X4 GT with unlocked boot loader, running MIUI 14 EU and I still can use Find Device with my phone! Is there anything wrong woth my phone and/or any reason for that? Thank you

It most likely means anyone as well as a thief can flash and format the phone (via TWRP, OrangeFox, etc.), so whatever Find Device function will not work outside the system.

In the system the Find Device function is normal, but the problem is from outside the ROM.

If you still have doubt, ask the place where it told you Find Device will no longer available and ask them to explain to you.

 

[Hàn Thanh Hà]

It most likely means anyone as well as a thief can flash and format the phone (via TWRP, OrangeFox, etc.), so whatever Find Device function will not work outside the system.

In the system the Find Device function is normal, but the problem is from outside the ROM.

If you still have doubt, ask the place where it told you Find Device will no longer available and ask them to explain to you.

Thank you for reply

It's Mi Unlock tool to say Unlocking will result to Find Device no longer available

But I guess my phone is OK, because I can do everything as normal

 

[djmarkoos]

I`ve followed all these steps but mi unlock tool keeps giving error.
Mi 12t Pro with miui global 14.0.7, Android 13.
All necessary steps are passed without problem. Developer options, find device, added mi account, associated account for unlock. restart to fastboot, but this error keeps again and again.

 

[joke19]

I`ve followed all these steps but mi unlock tool keeps giving error.
Mi 12t Pro with miui global 14.0.7, Android 13.
All necessary steps are passed without problem. Developer options, find device, added mi account, associated account for unlock. restart to fastboot, but this error keeps again and again.

Which version of mi unlock tool? Maybe an old version?

 

[djmarkoos]

Version 6.5.406.31

 

[pl1992aw]

Version 6.5.406.31

Try install driver, then reboot PC.

If you have a router, turn it off for 1 minute, then turn it on.

While unlocking the phone, your PC needs to be connected to internet.

You will need to wait for 7 days after applied for unlock.

Unplug and then plug it back to PC.

If you are using Desktop PC, plug the cable to the port on the back of PC, the USB socket on the motherboard.

You could also try the unlock tool version 5.5

Sometimes there's server issue on Xiaomi side, so could also wait another day.

 

[djmarkoos]

i`m already waiting for 15-20 days approx.

Maybe to change pc/laptop.

 

[pl1992aw]

i`m already waiting for 15-20 days approx.

Maybe to change pc/laptop.

There were some cases that AMD CPU having issues with fastboot.

 

[djmarkoos]

it`s Intel gen10 on my side. so its not that kind of prob.

 

[pl1992aw]

it`s Intel gen10 on my side. so its not that kind of prob.

Rule out AMD CPU possibility.

I can't help much. This tool is a pain, but either with this or with the non-official and not updated tool V2 are the only 2 program that has the ability to unlock Xiaomi.

If you have a spare USB disk that is larger than 16 GB, try intall a Windows-To-Go on it and boot the system from the USB, so it will be a clean Windows.

Had also seen someone said use the phone number to login to Xiaomi would work.

 

[hryamzik]

Hi, im reading all about ARB over an few houers and i have mess in my head.
Currently i have unlocked bootloared, TWRP installed, and installed ArrowOS via TWRP like in the guide in first post.
I would like to have rom that is not so much diffrent than official one.
I have downloaded xiaomi.eu_multi_POCOX3Pro_V12.5.5.0.RJUMIXM_v12-11.zip from here https://xiaomi.eu/community/threads/miui-12-0-12-1-12-2-12-5-stable-release.56191/ (12.5.5.0 matched my stocked rom i had before i started all the process, i had global rom but this one is called multi)
Is it official rom? looks like its based fully on official but when we talking about ARB it have great importace, becouse if its not official i can safely install it without worring about ARB index (like the ArrowOS right?), but if its official i have to know the ARB index before instalation!
If im wrong please tell me.
The Xiaomi ADB/Fastboot Tools shows me: Anti version: 2. (like in the first author post)
So i was trying to check ARB index in my downloaded rom (the one i mention above).
Its zip file so i can't check the ARB numer like guides say about tar.gz roms.
Well i was tried to ARB some HEX editor, but i can't match te line who says "1" or "4" about having or not having ARB.
Please help me, waht should i do now?
PS. All this for having root ofcourse..

Edit.
I have found answer here:

MIUI 13 - MIUI 13 STABLE RELEASE

Going to get a Xiaomi 12T Pro today (DITING) and I assume it comes with MIUI 13 (Android 12). Used Xiaomi.EU roms before on older devices which used Android 10/11 and had to get bootloader unlocked. Just to make sure, with Android 12, there's no need to unlock bootloader (as per instructions it...

xiaomi.eu

It's not stock rom, and i can flash it safetly. They say also i can easly remove ARB protection from stock roms and install them like any other custom rom? I have worries about it..
I have flashed succesfully this rom mentioned above and after flashed MIUI 13 version and now will be doing MIUI 14. Magisk installed sucesfully with this thread first post guide via TWRP. THX

Where did you download MIUI 14 from? Do you have ethernet tethering there?

 

[Marmalize]

Hi,

Sorry i need to ask again, recently after updating to MIUI 14 my phone constantly crashing when on the call and video call even sometimes it wont boot to os but it can boot to fastboot, and weirdly enough when gaming or multitasking the phone doesn't even crash, now i don't know if its hardware related or software, but now im trying to revert back from miui 14 to miui 13 or 12.5, can i just unlock the bootloader and and do the clean flash of miui 12.5? or is there any requirement for downgrading?

Thank you

and for you guys going to miui 14 i suggest be careful, cheers!

 

[pl1992aw]

Hi,

Sorry i need to ask again, recently after updating to MIUI 14 my phone constantly crashing when on the call and video call even sometimes it wont boot to os but it can boot to fastboot, and weirdly enough when gaming or multitasking the phone doesn't even crash, now i don't know if its hardware related or software, but now im trying to revert back from miui 14 to miui 13 or 12.5, can i just unlock the bootloader and and do the clean flash of miui 12.5? or is there any requirement for downgrading?

Thank you

and for you guys going to miui 14 i suggest be careful, cheers!

If you are in Europe, and you bought your phone within 2 years, you can find Xiaomi to check for hardware issue. Europe has 2 year warranty.

Your other post gives a clue of hardware issue.

Search the forum about.

Don't use MiFlash to downgrade. One might accidently lock the bootloader if you are inexperienced.

Section 2 step 11, if your phone got Anti version 2, you can downgrade to MIUI version, 12.0.1~14.

You don't have to worry about Anti version if you are installing a custom ROM.

Section 2 step 16 is a must.

 

[Marmalize]

If you are in Europe, and you bought your phone within 2 years, you can find Xiaomi to check for hardware issue. Europe has 2 year warranty.

Don't use MiFlash to downgrade. One might accidently lock the bootloader if you are inexperienced.

Section 2 step 11, if your phone got Anti version 2, you can downgrade to MIUI version, 12.0.1~14.

You don't have to worry about Anti version if you are installing a custom ROM.

Section 2 step 16 is a must.

Hi,

Unfortunately im in Indonesia, i been trying to using flash_all.bat but it wont run, is it possible this can be caused that i cant downgrade?

 

[pl1992aw]

Hi,

Unfortunately im in Indonesia, i been trying to using flash_all.bat but it wont run, is it possible this can be caused that i cant downgrade?

Your other post gives a clue of hardware issue.

Search the forum about it.

Poco X3 PRO White screen problem

ey, It all happened like 2,4h ago I just tried to open Youtube and my screen glitched and my phone turned off itself after a few seconds. I only can turn it on again, just to see the same glitchy screen after one minute of turning it on. Now when...

forum.xda-developers.com

Poco X3 Pro randomly bricked

Hello, It all happened like 2h ago when charging my phone (was at about 96%). I just tried to open a Snap and my screen glitched, phone turned off itself after few seconds. I could turn it on again only to see the same glitchy screen after one...

forum.xda-developers.com

flash_all.bat needs an unlocked bootloader.

If you already unlocked bootloader, the folder name can be too long, rename it shorter like "ROM".