I have finally unlocked the bootloader (no guides mention it will wipe my phone at the same time!).
Now I am looking again at Roms, HentaiOS and ArrowOS were contenders but Xiaomi.EU sounds like the best of all factors, a Poco F3 centric, manufacturer update with added functionality and removed bloat.
I have watched several "guides" to install, including this one (
) and this one (
) both seem to assume that I am not retarded!
I would like a really easy, step-by-step guide to how to install this Rom.
Do I need to install ADB? Some people say to load the Xiaomi.EU rom in internal storage but to wipe the phone first, so how would I do that? Some say I should BOOT TWRP, others say I need to install it? huh?
There has to be a "explain it to me like im three years old", guide to this!? ACK!
ArghMonkey said:
I have finally unlocked the bootloader (no guides mention it will wipe my phone at the same time!).
Now I am looking again at Roms, HentaiOS and ArrowOS were contenders but Xiaomi.EU sounds like the best of all factors, a Poco F3 centric, manufacturer update with added functionality and removed bloat.
I have watched several "guides" to install, including this one (
) and this one (
) both seem to assume that I am not retarded!
I would like a really easy, step-by-step guide to how to install this Rom.
Do I need to install ADB? Some people say to load the Xiaomi.EU rom in internal storage but to wipe the phone first, so how would I do that? Some say I should BOOT TWRP, others say I need to install it? huh?
There has to be a "explain it to me like im three years old", guide to this!? ACK!
Click to expand...
Click to collapse
You don't "install" ADB and Fastboot. Those are protocols through which a PC can talk to an Android device for debugging purpose and other purposes like this.
The Fastboot Mode on an Android phone lets you deep system stuff, like modifying partitions (flashing, erasing, etc.)
ADB lets you do more high-level stuff, like removing system apps, granting/removing permissions to apps, pulling/pushing files from/onto storage.
To speak to those protocols, you need the portable Command Line Tools for ADB & Fastboot built by Google:
SDK Platform Tools release notes | Android Studio | Android Developers
Android SDK Platform-Tools is a component for the Android SDK.
developer.android.com
First, you unlock the bootloader (which factory-resets your phone, lol),
then you put the ROM zip-file (e.g. Xiaomi.eu Custom ROM) onto the phone storage,
then you reboot your phone into Fastboot Mode (POWER + Volume Down),
then, in Fastboot, you boot TWRP (a Custom Recovery):
Open Command Prompt inside the Platform-Tools folder,
do "fastboot boot TWRP.img" (assuming the TWRP file name is "TWRP.img")
then you flash the ROM inside TWRP,
then you format data & clear Dalvik Cache,
that's it. I hope I haven't forgotten anything.
I'd also like to include some Notes that I have made for myself in a text file:
ROM: xiaomifirmwareupdater.com/archive/miui/alioth/
Mi Flash: xiaomiflashtool.com
ADB & Fastboot: developer.android.com/studio/releases/platform-tools
Xiaomi ADB & Fastboot Tools: github.com/Szaki/XiaomiADBFastbootTools
TWRP: https://forum.xda-developers.com/f/xiaomi-poco-f3-xiaomi-mi-11x-redmi-k40.12161/?prefix_id=33
Magisk: github.com/topjohnwu/Magisk
Poco F3 - Clean Install of Xiaomi.eu ROM:
Download Stock ROM (EEA Fastboot) & Xiaomi.eu Weekly
Delete Anti-Rollback Code from Flash_all.bat
Patch Xiaomi.eu boot.img with Magisk
Flash Stock ROM with Mi Flash
Boot System
Boot TWRP @Nebrassy
Flash Xiaomi.eu ROM
Format Data & Dalvik Cache
Click to expand...
Click to collapse
dreamytom said:
You don't "install" ADB and Fastboot. Those are protocols through which a PC can talk to an Android device for debugging purpose and other purposes like this.
The Fastboot Mode on an Android phone lets you deep system stuff, like modifying partitions (flashing, erasing, etc.)
ADB lets you do more high-level stuff, like removing system apps, granting/removing permissions to apps, pulling/pushing files from/onto storage.
To speak to those protocols, you need the portable Command Line Tools for ADB & Fastboot built by Google:
SDK Platform Tools release notes | Android Studio | Android Developers
Android SDK Platform-Tools is a component for the Android SDK.
developer.android.com
First, you unlock the bootloader (which factory-resets your phone, lol),
then you put the ROM zip-file (e.g. Xiaomi.eu Custom ROM) onto the phone storage,
then you reboot your phone into Fastboot Mode (POWER + Volume Down),
then, in Fastboot, you boot TWRP (a Custom Recovery):
Open Command Prompt inside the Platform-Tools folder,
do "fastboot boot TWRP.img" (assuming the TWRP file name is "TWRP.img")
then you flash the ROM inside TWRP,
then you format data & clear Dalvik Cache,
that's it. I hope I haven't forgotten anything.
Click to expand...
Click to collapse
Good job!
You could almost give us a guide on the dedicated "how to" section
However I read that to start twrp from fastboot using cmd you need to put the twrp(filename).img on the platform tool folder. Right?
RollDload said:
Good job!
You could almost give us a guide on the dedicated "how to" section
However I read that to start twrp from fastboot using cmd you need to put the twrp(filename).img on the platform tool folder. Right?
Click to expand...
Click to collapse
Oh yes, that command also assumes TWRP.img is inside the same folder.
What I do is drag 'n drop the TWRP file into the CMD-window. The full path to the TWRP-file will automatically be written in the CMD-window.
dreamytom said:
Oh yes, that command also assumes TWRP.img is inside the same folder.
What I do is drag 'n drop the TWRP file into the CMD-window. The full path to the TWRP-file will automatically be written in the CMD-window.
Click to expand...
Click to collapse
I remembered well then...
Thanks!
Since I rooted the galaxy s5 I try to carefully read as much information as possible before performing any modding operation.
Both from the positive and negative experiences of the users it is possible to avoid errors and bricks.
In a few hours I can unlock the bootloader and move to the stable of xiaomi.eu, I can't wait
I went from "miui stock 12.5.3" EEA to "xiaomi.eu stable 12.5.6." and everything went well!
The steps I took are as follows:
1) I have unlocked the bootloader;
2) I copied the image of the latest TWRPnebrassy recovery in C: \ platform-tools;
3) I copied the .zip file of xiaomi.eu-12.5.6 in the phone memory;
4) After enabling usb debug I restarted the phone in fastboot and connected it to the pc;
5) in the "C: \ platform-tools" folder, I started a cmd window;
6) in cmd I typed the following command
Code:
fastboot boot TWRP.img
Then the phone rebooted into TWRP;
7) "in TWRP" I went to "INSTALL" and selected the .zip file of the rom and started the flash;
8) Completed the flash (it takes a few minutes) I went to "WIPE" and I formatted "data";
9) Subsequently I rebooted in the system (the first start takes a few more minutes, wait);
Done;
Can vasishasht's TWRP be used instead of Nebrassy's?
Dhruv.m said:
Can vasishasht's TWRP be used instead of Nebrassy's?
Click to expand...
Click to collapse
Yes. They're both TWRP 3.5.2, but they are still different from each other.
With Vasishoth's you may get "Failed to mount" errors right at the start.
If you face any errors, you can always switch TWRP.
also, can this be flashed directly from an AOSP ROM?
@Dhruv.m Xiaomi.eu can't be dirty-flashed on an AOSP ROM, if that's your question.
There's a low chance that it may boot, but it'll be broken & unusable.
dreamytom said:
@Dhruv.m Xiaomi.eu can't be dirty-flashed on an AOSP ROM, if that's your question.
There's a low chance that it may boot, but it'll be broken & unusable.
Click to expand...
Click to collapse
Nah I'm not asking that, I'm asking that do I need to go back to MIUI before flashing xiaomi.eu or can it be installed cleanly from an AOSP ROM?
Dhruv.m said:
Nah I'm not asking that, I'm asking that do I need to go back to MIUI before flashing xiaomi.eu or can it be installed cleanly from an AOSP ROM?
Click to expand...
Click to collapse
That's right what @dreamytom says, I personally haven't tried vasishasht's, so I can't tell you.
I know that the xiaomi.eu flash works well if you start from the stock, starting from an aosp I don't know, errors could arise, so I would avoid.
I used the nebrassy one because the xiaomi.eu installation package flashes the nebrassy twrp, so it seemed like the right choice.
So I advise you to install the .eu starting from a stock miui.
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How to install PixelPlusUI ROM on Redmi Note 9This guide will teach you how to install PixelPlusUI into Redmi Note 9 merlin or merlin Nfc version.
This is a more detailed and straightforward guide based on the official guide of PixelPlusUI found on their Github page here.
This guide can be applied to other customs ROMs* e.g Pixel Experience etc. Yes, the process is exactly the same for pretty much any custom ROM you want to install to Redmi Note 9.
Installing GuideIn this guide, I will explain to you how and why we follow certain steps, so you can clearly understand every step, process, and risk of installing a custom ROM into a Redmi note 9. And avoid breaking your phone, bricking/hard bricking your phone: no operating system or a possible way to recover it, lost IMEI: can't make calls or receive.
In this guide, I will not explain to you how to unlock your bootloader! you can find plenty of guides online on how to do it and it's overall an easy job.
Before you start you will need to have an unlocked bootloader to be able to modify your system files. Once you have an unlocked phone you can start with the process of Flashing* a custom ROM.
The steps we have to follow are--------------------------- Mandatory steps to be able to install a ROM, 1 - 7
1. Download Platform Tools*, A Custom Recovery*, and a modified VBMeta image, Mi-Flash to be able to downgrade MIUI, and the latest PixelPlusUI ROM which as of today is PixelPlusUI 3.9 for android 11 and PixelPlusUI 4.1 for Android 12.
2. Flash* recovery and VBMeta
3. Reboot into recovery
4. Backup IMEI
5. Downgrade your fastboot* into 12.0.3 version
6. Flash recovery and VBMeta
7. Reboot into recovery
--------------------------- Steps to install pretty much any ROM to Redmi Note 9, 8 - 11
8. Flash the latest firmware
9. Reboot into recovery
10. Wipe Dalvik/Art, Cache, Format Data
11. Flash PixelPlusUI ROM
---------------------------- Updating the ROM, 12 - 13
12. Update from 3.9 to 3.10.
13. Update to Android 12 with PixelPlusUI 4.1 (Optional) (Avoid for now cause it's unstable)
1. Once you have downloaded everything extract Platform Tools enter the folder where it contains all the necessary exes and run CMD inside this folder.
Turn off your phone, press the power and volume down button hold till your phone turns on, this will boot your phone into fastboot. Connect your phone via USB cable to your pc.
In CMD type "fastboot devices" without the annotations. it would output your phone right below with an ID and a fastboot label next to it.
if you are seeing "< waiting for device >" go to windows device manager, you'll find your phone in the other devices section with a yellow triangle. right-click it and click the first option to update the drivers, choose to select locally then Google => Android bootloader interface.
2. Now that we know fastboot is working and detecting our phone we have to flash the custom recovery.
copy the recovery file you downloaded, it should be an .img file, into the Platform Tools folder, in CMD now write "fastboot flash recovery recoveryname.img" without the annotations obviously, once its done, copy the vbmeta.img (might be named differently) also into the Platform Tools folder and write "fastboot --disable-verification flash vbmeta vbmeta.img" as vbmeta.img the file you just copied. if this throws an error do "fastboot flash vbmeta vbmeta.img" instead.
3-4. Now its time to backup our IMEI, if we don't back it up now, there's a change in the next step we lose access to make or receive phone calls, in case this happens we can flash back the IMEI and get it back to work. How do we back it up. While in fastboot, remove the usb cable, and turn off your phone, hold volume up and power till your phone turns on, wait till it boots into Recovery, if you accidentally boot normally into MIUI you will lose the recovery we installed before and it would roll back to stock xiaomi recovery, then you'll have to refollow step 2. Once in recovery, enter your pin and go to Tweaks, And tap the Imei backup, wait till its done, and then go back to the main menu, connect your phone via usb to your computer. your phone would pop up as a storage device, if nothing happens its because of the drives. go to windows device manager, you'll find your phone in the other devices section with a yellow triangle. right-click it and click the first option to update the drivers, choose to select locally then Google => Android ADB interface, Once it pop up enter into it and you'll find a folder called "imeibackup" copy that folder into your computer and keep it safe. this folder includes some partitions as img files and a zip file. the zip file is basically all the files archived into a single file, to be able to flash it later from recovery,
5. Time to downgrade your MIUI fastboot version, we have to do this, because if we don't downgrade we won't be able to install a custom ROM why? well, I actually down know, but pretty much flashing does nothing in the latest MIUI version 12.5 and so on, thankfully you can downgrade the MIUI version in the Redmi Note 9. The best version so far is the MIUI 12.0.3 and you only have to flash the fastboot image, The MIUI you gonna download has to be the same region as your phone e.g my phone is EU/Global i have to download the global fastboot image. if you miss-match them you won't be able to make or receive phone calls. Visit this page Visit this page find your regions "V12.0.3.0" MIUI version click on the very right "download" button, scroll down where it says "type:fastboot" bellow there a button "Download: Full ROM" the file ends with a tgz extension, extract the archive inside you'll find a folder named something like this "merlin_id_global_images_V12.0.3.0.QJOIDXM_20200807.0000.00_10.0_global" copy that folder into the root of your hard drive, rename it into merlin_id_global_images_V12.0.3.0.QJOIDXM
Install Mi-Flash, run Mi-Flash, click select and select the folder you copied into the root of your hard drive, on the bottom right corner flash_all_lock.bat change it into flash_all.bat this will prevent the bootloader from locking again, but it might destroy your IMEI partition, but thankfully we back it up in step 3-4. On your phone, while we left in recovery go to reboot => advanced => fastboot, once you are again in fastboot, connect your phone via a usb cable in to the computer in Mi-Flash press refresh, your phone will show up in the list, if not just follow again the drivers guide at the end of step 1. in Mi-Flash click flash next to refresh and wait till its done, the result should say success. Your phone will reboot and boot back to the old v12.0.3 MIUI version.
6-7-8-9. Now that we downgraded our phone is back to stock recovery and rom. we have to re-do some steps like installing the vbmeta and custom recovery.
Follow again the step 1 and 2. flash recovery and instead this time when flashing vbmeta.img just do "fastboot flash vbmeta vbmeta.img", reboot into recovery mode, by turning off your phone,
and then holding volume up and power till it turns on, now we are back into custom recovery we just installed again, in recovery now we have to flash the latest firmware of redmi note 9, this is necessary for PixelPlusUI to work properly. Download the latest firmware for your region from here, you'll get a zip file, copy the file zip into the platform-tools folder, open cmd in this folder and this time we have to sideload the zip via ADB. in your phone go to advance and then tap on sideload, tap the checkmark to start adb, on your pc in cmd you opened before type "adb devices" if it shows your device similarly as the fastboot devices step we did before you can continue if not, do the driver guide in step 3-4, once you ready type "adb sideload firmwarefilename.zip" replace firmwarefilename.zip with the firmware you downloaded name. once the sideload is done, click the X go to reboot=>advanced=>recovery, we have to avoid booting into miui now so we don't lose our custom recovery, this will reboot your back to recovery.
10-11. Now back in recovery go to wipe and tap the bottom right button Wipe with an arrow. when it's done, go to advanced and then sideload, click the checkmark,
copy the PixelPlusUI_3.9.zip into the platform-tools folder, in cmd you have open from before do "adb sideload pixelplusUI_3.9.zip" wait till its done sideloading.
once it's done, turn off your phone, and boot it normally, you will be greeted with the P logo of pixelplusui, set up your phone normally, if you see "no sim card please insert sim" its possible you flashed the wrong MIUI region or you lost your IMEI, you can flash the IMEI zip you backed up using the recovery's option of sideload or by using the flash option. if this does not fix it, redo all the steps but this time using mi-flash flash the right MIUI fastboot region and firmware region.
12. Updating PixelPlusUI from 3.9 to 3.10 which seems to be the last version before it got discontinued, in your phone, go to settings, system, update, download the update, once its done downloading, do not install it, close settings, hold the power button tap advanced => recovery, in recovery go to flash, go back in a directory and find the folder data/System Update, inside there you'll find a zip file called PixePlusUI_v3.10_something something.zip, flash that file without wiping anything, when it's done, go back and then go to wipe, tap advanced wipe, select only Dalvik/ART Cache and Cache so you don't lose any data. reboot, Done! Never update using OTA auto-update.
13. (For now avoid cause it's unstable) Time to Upgrade to Android 12 with the official build of PixelPlusUI version 4.1
Download the build, Using ADB sideload the latest official firmware, then reboot into recovery, format data and then install the ROM, you can copy it into the device or sideload it.
Every time you want to update or re-install a ROM (Any ROM) to your Redmi Note 9 you have to refollow the following steps:1. Flash the latest firmware, Reboot to recovery after flashing.
2. Wipe Dalvik/Art, Cache, Format Data ( Don't do it if you just upgrade )
3. Install desired ROM.
Platform tools is a suite made by google for developers, it contains adb and fastboot apps which help you with installing/wiping content and doing more development related stuff to your phone.
VBMeta.img is required to be flashed to allow installing custom recoveries if you don't flash it, it would reverse the installed recovery back to the default Xiaomi recovery.
Custom Recovery a custom recovery is basically a separate OS that you can use to factory reset your phone when you can't access the main OS, or in this case, install random tweaks and mess around with system files and partitions.
Flash or Flashing Basically installing system files, partitions etc. can be done using adb, fastboot or from recovery.
Fastboot Similarly to Recovery is an option where you can restore your phone when you cannot do using the recovery, which is why we use it to install the custom recovery in the first place.
Tips for people who want to mess around with custom ROMs.
Every time you want to re-install a ROM, you'll have to re-install the firmware, the best bet is the latest Xiaomi firmware. Also, formating data is necessary to avoid bugs.
Known Bugs:When the fingerprint sensor is touched it won't let you gesture swipe to close an app.
When the NFC is enabled there's a tapping sound on the microphone.
It would be easier to build a custom rom than installing it.
VD171 said:
It would be easier to build a custom rom than installing it.
Click to expand...
Click to collapse
LMAO well, there's too much text to read. but it is totally worth it installing a custom ROM on redmi note 9
I see many people worried about that.
But I really prefer the stock MIUI, because it's so easier to me.
So, I can spend more time on xposed/lsposed and root/magisk.
Anyway, thank you very much for useful guide.
If somebody asks me again, I will send this guide
VD171 said:
I see many people worried about that.
But I really prefer the stock MIUI, because it's so easier to me.
So, I can spend more time on xposed/lsposed and root/magisk.
Anyway, thank you very much for useful guide.
If somebody asks me again, I will send this guide
Click to expand...
Click to collapse
I've been developing games for android, and the redmi note 9 is my primary phone for it, because it is the middle ground of performance based on the average user. so as long the game runs well most people would be fine.
The thing is, MIUI with its ram management really makes me struggle, minimizing, and multitasking re-launches the game and System UI a lot of time freezes, nothing of those things ever happens with pixelplusUI, that's why I prefer it making me focus mostly on the GPU performance without getting bottlenecked by the heavy and nonoptimized os.
Well, well.
I understand you.
I confess that I've never played nothing at any android I've ever had, since my first android in 2014.
Really interesting to know about that.
I like the ram management because I don't have to close everything by myself.
My brother and my mother keeps everything on memory and management keeps to the system.
My brother has an iphone (sadly) and my mother has a Redmi Note 10.
I agree that the management by MIUI is excessive and should be more customizable.
Hello again, I'm considering to follow this guide.
Does this need no special setup? No SP Flash Tool? No bypass? Just flash in fastboot directly?
Considering the amount of EDL bypass tutorials out there it looks overly simple.
Can you confirm this works for Mediatek Redmi Note 9 without previous setup?
Thanks for the guide.
By the way, are we safe from ARP (Anti Rollback Protection)? I've seen both my current ROM and the target miui have an ARB version of 2 so it should be safe, but still I want to be sure.
Hello, i flashed miui 12.0.3 but it doesnt want to boot, stuck in bootloop, fortunately it boots into recovery, i wiped data and factory reset but it still doesnt want to boot, how do i fix it?
SOLVED: step 5 is faulty, you need to go to stock fastboot using vol - and power and not using the SHRP menu! i was trying to get it to work for 3 hours and i fund the solution, happy flashing!
NewtonPL said:
SOLVED: step 5 is faulty, you need to go to stock fastboot using vol - and power and not using the SHRP menu! i was trying to get it to work for 3 hours and i fund the solution, happy flashing!
Click to expand...
Click to collapse
Nothing faulty there you did not read the whole step. It says "downgrade using MI-Flash software", not using a custom recovery. Read the step properly and completely.
0xSteeW said:
By the way, are we safe from ARP (Anti Rollback Protection)? I've seen both my current ROM and the target miui have an ARB version of 2 so it should be safe, but still I want to be sure.
Click to expand...
Click to collapse
Yea it's safe I've downgraded from miui 12.5.5 to miui 12.0.1 and its totally safe. You can use miflash to downgrade
0xSteeW said:
Hello again, I'm considering to follow this guide.
Does this need no special setup? No SP Flash Tool? No bypass? Just flash in fastboot directly?
Considering the amount of EDL bypass tutorials out there it looks overly simple.
Can you confirm this works for Mediatek Redmi Note 9 without previous setup?
Thanks for the guide.
Click to expand...
Click to collapse
Edl bypass is only needed of you brick your device or it doesn't boot into fastboot or for taking backup kinda stuff.
Otherwise miflash does the job
thanks.
All works, thanks for the very detailed guide!
Quick question: do I have to flash with sideload or can I flash with SHRP?
I installed miui 12.0.1. will there be any difference if I use miui12.0.1 instead of 12.0.3?
Manjotbenipal said:
I installed miui 12.0.1. will there be any difference if I use miui12.0.1 instead of 12.0.3?
Click to expand...
Click to collapse
Any ROM before 12.5 is ok
vagelis199 said:
View attachment 5566615How to install PixelPlusUI ROM on Redmi Note 9This guide will teach you how to install PixelPlusUI into Redmi Note 9 merlin or merlin Nfc version.
This is a more detailed and straightforward guide based on the official guide of PixelPlusUI found on their Github page here.
This guide can be applied to other customs ROMs* e.g Pixel Experience etc. Yes, the process is exactly the same for pretty much any custom ROM you want to install to Redmi Note 9.
Installing GuideIn this guide, I will explain to you how and why we follow certain steps, so you can clearly understand every step, process, and risk of installing a custom ROM into a Redmi note 9. And avoid breaking your phone, bricking/hard bricking your phone: no operating system or a possible way to recover it, lost IMEI: can't make calls or receive.
In this guide, I will not explain to you how to unlock your bootloader! you can find plenty of guides online on how to do it and it's overall an easy job.
Before you start you will need to have an unlocked bootloader to be able to modify your system files. Once you have an unlocked phone you can start with the process of Flashing* a custom ROM.
The steps we have to follow are--------------------------- Mandatory steps to be able to install a ROM, 1 - 7
1. Download Platform Tools*, A Custom Recovery*, and a modified VBMeta image, Mi-Flash to be able to downgrade MIUI, and the latest PixelPlusUI ROM which as of today is PixelPlusUI 3.9 for android 11 and PixelPlusUI 4.1 for Android 12.
2. Flash* recovery and VBMeta
3. Reboot into recovery
4. Backup IMEI
5. Downgrade your fastboot* into 12.0.3 version
6. Flash recovery and VBMeta
7. Reboot into recovery
--------------------------- Steps to install pretty much any ROM to Redmi Note 9, 8 - 11
8. Flash the latest firmware
9. Reboot into recovery
10. Wipe Dalvik/Art, Cache, Format Data
11. Flash PixelPlusUI ROM
---------------------------- Updating the ROM, 12 - 13
12. Update from 3.9 to 3.10.
13. Update to Android 12 with PixelPlusUI 4.1 (Optional) (Avoid for now cause it's unstable)
1. Once you have downloaded everything extract Platform Tools enter the folder where it contains all the necessary exes and run CMD inside this folder.
Turn off your phone, press the power and volume down button hold till your phone turns on, this will boot your phone into fastboot. Connect your phone via USB cable to your pc.
In CMD type "fastboot devices" without the annotations. it would output your phone right below with an ID and a fastboot label next to it.
if you are seeing "< waiting for device >" go to windows device manager, you'll find your phone in the other devices section with a yellow triangle. right-click it and click the first option to update the drivers, choose to select locally then Google => Android bootloader interface.
2. Now that we know fastboot is working and detecting our phone we have to flash the custom recovery.
copy the recovery file you downloaded, it should be an .img file, into the Platform Tools folder, in CMD now write "fastboot flash recovery recoveryname.img" without the annotations obviously, once its done, copy the vbmeta.img (might be named differently) also into the Platform Tools folder and write "fastboot --disable-verification flash vbmeta vbmeta.img" as vbmeta.img the file you just copied. if this throws an error do "fastboot flash vbmeta vbmeta.img" instead.
3-4. Now its time to backup our IMEI, if we don't back it up now, there's a change in the next step we lose access to make or receive phone calls, in case this happens we can flash back the IMEI and get it back to work. How do we back it up. While in fastboot, remove the usb cable, and turn off your phone, hold volume up and power till your phone turns on, wait till it boots into Recovery, if you accidentally boot normally into MIUI you will lose the recovery we installed before and it would roll back to stock xiaomi recovery, then you'll have to refollow step 2. Once in recovery, enter your pin and go to Tweaks, And tap the Imei backup, wait till its done, and then go back to the main menu, connect your phone via usb to your computer. your phone would pop up as a storage device, if nothing happens its because of the drives. go to windows device manager, you'll find your phone in the other devices section with a yellow triangle. right-click it and click the first option to update the drivers, choose to select locally then Google => Android ADB interface, Once it pop up enter into it and you'll find a folder called "imeibackup" copy that folder into your computer and keep it safe. this folder includes some partitions as img files and a zip file. the zip file is basically all the files archived into a single file, to be able to flash it later from recovery,
5. Time to downgrade your MIUI fastboot version, we have to do this, because if we don't downgrade we won't be able to install a custom ROM why? well, I actually down know, but pretty much flashing does nothing in the latest MIUI version 12.5 and so on, thankfully you can downgrade the MIUI version in the Redmi Note 9. The best version so far is the MIUI 12.0.3 and you only have to flash the fastboot image, The MIUI you gonna download has to be the same region as your phone e.g my phone is EU/Global i have to download the global fastboot image. if you miss-match them you won't be able to make or receive phone calls. Visit this page Visit this page find your regions "V12.0.3.0" MIUI version click on the very right "download" button, scroll down where it says "type:fastboot" bellow there a button "Download: Full ROM" the file ends with a tgz extension, extract the archive inside you'll find a folder named something like this "merlin_id_global_images_V12.0.3.0.QJOIDXM_20200807.0000.00_10.0_global" copy that folder into the root of your hard drive, rename it into merlin_id_global_images_V12.0.3.0.QJOIDXM
Install Mi-Flash, run Mi-Flash, click select and select the folder you copied into the root of your hard drive, on the bottom right corner flash_all_lock.bat change it into flash_all.bat this will prevent the bootloader from locking again, but it might destroy your IMEI partition, but thankfully we back it up in step 3-4. On your phone, while we left in recovery go to reboot => advanced => fastboot, once you are again in fastboot, connect your phone via a usb cable in to the computer in Mi-Flash press refresh, your phone will show up in the list, if not just follow again the drivers guide at the end of step 1. in Mi-Flash click flash next to refresh and wait till its done, the result should say success. Your phone will reboot and boot back to the old v12.0.3 MIUI version.
6-7-8-9. Now that we downgraded our phone is back to stock recovery and rom. we have to re-do some steps like installing the vbmeta and custom recovery.
Follow again the step 1 and 2. flash recovery and instead this time when flashing vbmeta.img just do "fastboot flash vbmeta vbmeta.img", reboot into recovery mode, by turning off your phone,
and then holding volume up and power till it turns on, now we are back into custom recovery we just installed again, in recovery now we have to flash the latest firmware of redmi note 9, this is necessary for PixelPlusUI to work properly. Download the latest firmware for your region from here, you'll get a zip file, copy the file zip into the platform-tools folder, open cmd in this folder and this time we have to sideload the zip via ADB. in your phone go to advance and then tap on sideload, tap the checkmark to start adb, on your pc in cmd you opened before type "adb devices" if it shows your device similarly as the fastboot devices step we did before you can continue if not, do the driver guide in step 3-4, once you ready type "adb sideload firmwarefilename.zip" replace firmwarefilename.zip with the firmware you downloaded name. once the sideload is done, click the X go to reboot=>advanced=>recovery, we have to avoid booting into miui now so we don't lose our custom recovery, this will reboot your back to recovery.
10-11. Now back in recovery go to wipe and tap the bottom right button Wipe with an arrow. when it's done, go to advanced and then sideload, click the checkmark,
copy the PixelPlusUI_3.9.zip into the platform-tools folder, in cmd you have open from before do "adb sideload pixelplusUI_3.9.zip" wait till its done sideloading.
once it's done, turn off your phone, and boot it normally, you will be greeted with the P logo of pixelplusui, set up your phone normally, if you see "no sim card please insert sim" its possible you flashed the wrong MIUI region or you lost your IMEI, you can flash the IMEI zip you backed up using the recovery's option of sideload or by using the flash option. if this does not fix it, redo all the steps but this time using mi-flash flash the right MIUI fastboot region and firmware region.
12. Updating PixelPlusUI from 3.9 to 3.10 which seems to be the last version before it got discontinued, in your phone, go to settings, system, update, download the update, once its done downloading, do not install it, close settings, hold the power button tap advanced => recovery, in recovery go to flash, go back in a directory and find the folder data/System Update, inside there you'll find a zip file called PixePlusUI_v3.10_something something.zip, flash that file without wiping anything, when it's done, go back and then go to wipe, tap advanced wipe, select only Dalvik/ART Cache and Cache so you don't lose any data. reboot, Done! Never update using OTA auto-update.
13. (For now avoid cause it's unstable) Time to Upgrade to Android 12 with the official build of PixelPlusUI version 4.1
Download the build, Using ADB sideload the latest official firmware, then reboot into recovery, format data and then install the ROM, you can copy it into the device or sideload it.
Every time you want to update or re-install a ROM (Any ROM) to your Redmi Note 9 you have to refollow the following steps:1. Flash the latest firmware, Reboot to recovery after flashing.
2. Wipe Dalvik/Art, Cache, Format Data ( Don't do it if you just upgrade )
3. Install desired ROM.
Platform tools is a suite made by google for developers, it contains adb and fastboot apps which help you with installing/wiping content and doing more development related stuff to your phone.
VBMeta.img is required to be flashed to allow installing custom recoveries if you don't flash it, it would reverse the installed recovery back to the default Xiaomi recovery.
Custom Recovery a custom recovery is basically a separate OS that you can use to factory reset your phone when you can't access the main OS, or in this case, install random tweaks and mess around with system files and partitions.
Flash or Flashing Basically installing system files, partitions etc. can be done using adb, fastboot or from recovery.
Fastboot Similarly to Recovery is an option where you can restore your phone when you cannot do using the recovery, which is why we use it to install the custom recovery in the first place.
Tips for people who want to mess around with custom ROMs.
Every time you want to re-install a ROM, you'll have to re-install the firmware, the best bet is the latest Xiaomi firmware. Also, formating data is necessary to avoid bugs.
Known Bugs:When the fingerprint sensor is touched it won't let you gesture swipe to close an app.
When the NFC is enabled there's a tapping sound on the microphone.
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I'm on miui12.0.1 and want to install pixel experience android 10 with shrp.
Do I need to flash the vendor if I don't want to install pixel experience via sideload and is it necessary to disable avb 2.0 after flashing vendor and custom rom?
I cant boot into the recovery mentioned in this step, what do I do?
“6-7-8-9. Now that we downgraded our phone is back to stock recovery and rom. we have to re-do some steps like installing the vbmeta and custom recovery.
Follow again the step 1 and 2. flash recovery and instead this time when flashing vbmeta.img just do “fastboot flash vbmeta vbmeta.img”, reboot into recovery mode, by turning off your phone,“
how long it take to flash redmi note 9? already 1000 seconds passed and its still flashing