[GUIDE] Xiaomi Qin F21 Pro Custom Firmware, Root, Playstore Certified

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Jbazt_katuforzs

Jbazt_katuforzs

Senior Member
Mar 25, 2008
739
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Baliuag Bulacan
ppczouz said:
Hello everyone, and sorry for the long post.

Is anyone suffering from applications being forced closed?
I am on firmware 2.1.6

I have ordered a 4/64 unlocked with GAPPS from AliExpress, and what I received is reasonably de-Chinesed. But it still has the default Qin Launcher and the essential apps provided by Xiaomi (like dialer, contacts, calendar, ...) which is great as they are tailored for this form factor.
There are few issues here and there, but my biggest problem is app closing in the background... a typical Chinese rom issue for non-whitelisted apps... so it is killing Whatsapp and Teams which are vital to me.

The Question: Can I (and should I) downgrade to this rom based on firmware 1.1.1? and if so, what would I lose?

Alternatively, what can be done to prevent the apps from closing? (I assume my bootloader is already unlocked as Google Pay and banking apps refuse to work).

So many thanks to everyone.
Click to expand...
Click to collapse
There's a tutorial on page 1 how to systemize installed apps to fix notification. Transfer the app installed by choosing 1 (to sytem/app) or 2 ( to system/priv-app if app requires sensitive permissions to work)

You need to transfer the app to system so the app's permissions process wont close in tha background fixing its notification.

You could try to flash the firmware here just make a twrp backup first of your rom or a backup of its full flashtool firmware before you proceed. It's based from stocked official OEM just debloated of Chinese pre-installed apps so its basically similar.
 
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ppczouz

Member
Oct 21, 2007
43
4
Jbazt_katuforzs said:
There's a tutorial on page 1 how to systemize installed apps to fix notification. Transfer the app installed by choosing 1 (to sytem/app) or 2 ( to system/priv-app if app requires sensitive permissions to work)

You need to transfer the app to system so the app's permissions process wont close in tha background fixing its notification.

You could try to flash the firmware here just make a twrp backup first of your rom or a backup of its full flashtool firmware before you proceed. It's based from stocked official OEM just debloated of Chinese pre-installed apps so its basically similar.
Click to expand...
Click to collapse
Thank you for the writeup @Jbazt_katuforzs
I did think of the systemizer as a possible solution, I just didn't correlate delay/missing alerts with applications being killed in the background (silly me!!)

Not sure if my phone is rooted, but I will attempt some of the steps on P1 and see where that leads me.

Many thanks
 
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M

motty12

Member
Feb 9, 2022
23
1
i've been using the phone for a while and its been (more or less) really good but recently its been slowing down a lot so want to reset it, would i have to do the whole process again or can i just factory reset?
 
Jbazt_katuforzs

Jbazt_katuforzs

Senior Member
Mar 25, 2008
739
90
Baliuag Bulacan
motty12 said:
i've been using the phone for a while and its been (more or less) really good but recently its been slowing down a lot so want to reset it, would i have to do the whole process again or can i just factory reset?
Click to expand...
Click to collapse
Yes you need to do the root, playstore, etc. That's why its advisable to make a TWRP Backups and save it somewhere safe and just restore it for a fresh clean start.
 
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Nguyễn Thành Đạt

New member
Dec 27, 2019
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0
Chào. cho mình xin file cài đặt phần mềm điều khiển hồng ngoại đi kèm máy quốc tế với

Mod translation: Greet. Can I ask for the installation file of the infrared control software that comes with the international machine?
 
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Laucha54321

Laucha54321

New member
Dec 17, 2022
1
0
Hi I was wondering if you knew if there is a way to unlock LTE bands in this phone. I mainly need band 4. Is this possible or is it like trying to download ram?
 
P

ppczouz

Member
Oct 21, 2007
43
4
Jbazt_katuforzs said:
There's a tutorial on page 1 how to systemize installed apps to fix notification. Transfer the app installed by choosing 1 (to sytem/app) or 2 ( to system/priv-app if app requires sensitive permissions to work)

You need to transfer the app to system so the app's permissions process wont close in tha background fixing its notification.

You could try to flash the firmware here just make a twrp backup first of your rom or a backup of its full flashtool firmware before you proceed. It's based from stocked official OEM just debloated of Chinese pre-installed apps so its basically similar.
Click to expand...
Click to collapse
So, I went through the tutorial and downgraded from 2.1 to 1.1.1 (I can't put my finger on it, but it really does feel a step backward with the downgrade).
But overall, I'm super happy, all is now humming nicely and I have finally been able to systemize Whatsapp and Teams.

But I am facing one issue: Whatsapp (and other apps) refuse to see the GDrive account and thus I cannot restore and backup. It is very important that I can backup. Any pointers? anyone else experiencing this??? (GDrive itself works perfectly)
 
liljay18

liljay18

Senior Member
Sep 22, 2007
88
1
Quick questions

Whats the difference between v1.1.1 and v1.1.5 mine came with the later version and is there a way to root that one?

Another one what's the best way to remove the default messaging app and browser

Wgag launcher are you guys using?
 
Jbazt_katuforzs

Jbazt_katuforzs

Senior Member
Mar 25, 2008
739
90
Baliuag Bulacan
ppczouz said:
So, I went through the tutorial and downgraded from 2.1 to 1.1.1 (I can't put my finger on it, but it really does feel a step backward with the downgrade).
But overall, I'm super happy, all is now humming nicely and I have finally been able to systemize Whatsapp and Teams.

But I am facing one issue: Whatsapp (and other apps) refuse to see the GDrive account and thus I cannot restore and backup. It is very important that I can backup. Any pointers? anyone else experiencing this??? (GDrive itself works perfectly)
Click to expand...
Click to collapse
using whatsapp since I got the phone. Everything works, it can backup and restore to/from gdrive. try to uninstall both. Install and put an account to your gdrive 1st theN sync. Then install whatsapp. backups should work.
 
Last edited:
Jbazt_katuforzs

Jbazt_katuforzs

Senior Member
Mar 25, 2008
739
90
Baliuag Bulacan
liljay18 said:
Quick questions

Whats the difference between v1.1.1 and v1.1.5 mine came with the later version and is there a way to root that one?

Another one what's the best way to remove the default messaging app and browser

Wgag launcher are you guys using?
Click to expand...
Click to collapse
Dunno what are the changes but if there were, it might be just minor or some bugs fixes. There is! manually unlock the bootloader, manually install the TWRP, then add root and gooogle playstore (optional). Using system app remover can remove able to remove system apps. However, I always advised do a complete backup 1st before you try to explore manually removing pre-installed apps you dont want, bcoz there are core apps (home launchers, messanging, browsers, etc..) Android needs to check after a boot. you might end up with a lot of "SYSTEM UI" force clossing and unable to use the phone (SOFTBRICKED)
 
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H

harryspar

Senior Member
Nov 28, 2011
286
53
Laucha54321 said:
Hi I was wondering if you knew if there is a way to unlock LTE bands in this phone. I mainly need band 4. Is this possible or is it like trying to download ram?
Click to expand...
Click to collapse

It is very frustrating that this capable device is limited by bands.

There is a thread in Reddit where someone says if you flash the F30 ROM onto the F21, it will unlock the bands. However the Reddit poster is not giving out the F30 ROM dump.

I am looking for somebody with the F30 software so I can try flashing it on my F21.

Reddit post: https://www.reddit.com/r/dumbphones/comments/105upqc
 
Jbazt_katuforzs

Jbazt_katuforzs

Senior Member
Mar 25, 2008
739
90
Baliuag Bulacan
harryspar said:
It is very frustrating that this capable device is limited by bands.

There is a thread in Reddit where someone says if you flash the F30 ROM onto the F21, it will unlock the bands. However the Reddit poster is not giving out the F30 ROM dump.

I am looking for somebody with the F30 software so I can try flashing it on my F21.

Reddit post: https://www.reddit.com/r/dumbphones/comments/105upqc
Click to expand...
Click to collapse
In theory, an F30 that has an unlocked bootloader can be flashed with TWRP. TWRP can backup modem/radio and maybe restore that to an F21 pro firmware. Since both phones can have a full backup, its safer to try stuffs and just restore the backup when something goes wrong
 
Last edited:
H

harryspar

Senior Member
Nov 28, 2011
286
53
Jbazt_katuforzs said:
In theory, an F30 that has an unlocked bootloader can be flashed with TWRP. TWRP can backup modem/radio and maybe restore that to an F21 pro. Since both phone's can have a full backup, its safer to try stuffs and just restore th backup when something goes wrong
Click to expand...
Click to collapse
Yes. I am trying to find someone who has a backup of the f30 ROM so I can flash it to my F21
 
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    harryspar
    I thought those were the correct partitions but either I'm wrong or there's a difference between models. I'm really not sure.
    View
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    Jbazt_katuforzs
    Jbazt_katuforzs
    TUTORIAL UPDATE!

    MY DEVICE IS 4/64 with unlocked bootloader

    Unofficial Qin F21 Pro (MTK chipset) firmware, version 1.1.1 multilanguage.
    Thanks to @redsat, @gaguga and the whole 4pda community.
    Install at your own risk and responsibility.
    For testing purposes only, will be updated or changed if necessary.
    Use SP flash tool for flashing, bootloader should be unlocked on the phone (via @mlgmxyysd tool or Ubuntu boot image). Having the full own ROM dump is highly recommended in advance.

    Changes:
    -Removed chinese applications
    -Decrypted data partition
    -APK installer with no restrictions
    -System partitions are writable
    TWRP recovery 3.6.0_11-0 is added
    (In TWRP the phone memory is accessible via path: /data/media/0)


    WARNING: FLASHING THE FIRMWARE WILL WIPE EVERYTHING! I SUGGEST BACKUP IMPORTANT FILES BEFORE DOING THIS. I WILL NOT BE HELD RESPONSIBLE IF YOUR PHONE DONT BOOT, SOFT/HARD BRICKED! THIS TUTORIAL IS TO DO AT YOUR OWN RISK!

    ALL FILES REQUIRED FOR WINDOWS     https://www.mediafire.com/file/tl8hv77gl0vo6sd/qin_f21_pro_mtk.zip/file

    1. download and extract zip
    2. extract "F21PRO_1.1.1 (2).zip" (the firmware)
    3. extract "SP_Flash_Tool_V5.zip" (flash tool)
    4. install drivers
    5. open "flash_tool.exe"
    6. select scatter file from the firmware folder
    7. click download
    8. turn phone off
    9. hold back button then plug usb cable to pc. It should start flashing
    10. after download complete, unplug then boot to TWRP then reset factory
    11. Congrats! You now have chinese free apps firmware with TWRP Installed
    12. If it wont boot "DEVICE ENCRYPTED", just go to TWRP and FORMAT DATA then reboot (it should boot to system now)
    13. transfer "boot_2.img" phone or transfer it to a USB Flashdrive (more easier to locate) (FOR 3/32 VARIANTS TRY TO USE THIS BOOT IMAGE BOOT.IMG 3/32)
    14. boot to TWRP once again
    15. go to device path /data/media/0 or USB storage path using OTG
    16. FLASH IMAGE "boot_2.img" to boot partition to fix the device twrp path to /sdcard (IMPORTANT! boot is an IMAGE FILE not ZIP FILE. by default, TWRP is set to check for zip file and will n0t se IMAGE FILES in the directories. YOU NEED TO TAP THE INSTAL IMAGE BUTTON so image files will appear)
    17. reboot and proceed to installing ROOT and Google services
    HOW TO BOOT TWRP:

    * + heart button (upper left) + power on. once douqin logo appears press up button + power on immediately. TWRP first boot is in Russian language. just change it to english change twrp language


    HOW TO ROOT + GAPPS with playstore certified + fix keypad annoying issue

    1. transfer all the app APK from the "APK" folder youve download
    2. install everything (QinPad be a more stable keypad input)
    3. open gboard and enabled both gboard and QinPad (this should give you a quick switch of input in the notification bar everytime you will type something)
    4. open MAgisk app and update the apps to 22.1. phone reboots (DO NOT UPDATE TO VERSION 24.3)
    5. Open magisk again then Install Magisk > Select a patch file > choose "boot_2.img" in your directory (path where you transfer it)
    6. transfer "open_gapps-arm64-11.0-pico-20211217.zip" to device
    7. boot to TWRP
    8. FLASH IMAGE "boot_2.img_patch" IN THE BOOT PARTITION. then reboot. should be found in download path in TWRP
    9. go TWRP again and flash "open_gapps-arm64-11.0-pico-20211217.zip"
    10. reboot > SYSTEM
    11. you will see playstore. you will have an annoying message "device isnt playstore certified" just ignore it
    12. open MAGISK app go to settings and enable MAGISK HIDE, search module and install "Busybox for NDK" then reboot
    13. open MAGISK app, search module and install "MagiskHide Props Config" then reboot
    14. open Terminal emulator app
    15. type "su" enter (grant permission)
    16. type "props" enter
    17. type "1" enter
    18. type "F" enter
    19. type "30" enter
    20. type "25" enter
    21. type "2" enter
    22. type "y" enter
    23. type "y" enter (phone reboots)
    24. after reboot wait gapps to update (around 5-10 mins) then sign in to playstore
    25. you've now enter Playstore
    26. go to playstore settings > about > click update playstore
    27. wait for it to update the version and keep checking in playstore settings > about > IF DEVICE IS CERTIFIED
    28. If the updated playstore still said " DEVICE IS NOT CERTIFIED", proceed to manual
    29. install device id apps from playstore and copy your GSF ID
    30. register it manually here > https://www.google.com/android/uncertified/?pli=1
    31. go settings ~ apps and look for playstore and play services and clear data. reboot phone and Playstore should be certified!
    Congats! your phone now is rooted with twrp, no more chinese apps, and with fully working google services. I suggest perform a TWRP backup and store it somewhere safe for future use.


    HOW TO FIX NO/DELAYED INSTALLED APPS NOTIFICATIONS

    Thanks for JawadEly for the info, it works!

    1. Install all your apps
    2. Install terminal emulator app and system app remover app from playstore (this will give you the apk path you want to systemize)

    3. open magisk, search and intall "APP SYSTEMIZER" module then reboot.
    4. open terminal emulator app
    6. type "su" and grant the permission
    7. type "systemize"
    8. You need to set Selinux = TRUE by choosing "s"
    9. once its set to TRUE, you can now systemize any app provided you know the apk path of the apps installed.
    10. enter "3", here is where you put the apk path of the app you want to systemize
    11. to get the apk path of installed app open the "system app remover" app you installed.
    12. go to user apps and LONG PRESS an app you wish to systemize.
    13. copy the apk path then go to terminal emulator and paste it. Type "1" to confirm.
    14. Go to settings > apps list > clear storage of that app you transfer as system app
    15. done! just repeat the proceedure for each app you wish to fix the notifications.

    BEWARE! Be careful using system app remover. Don't uninstall system apps required for the android system. You might end up in a bootloop. This app is also used to remove bloatwares of OEM firmwares.

    I made this tutorial as DETAILED and as EASY TO FOLLOW as posible. Credits to 4pda community group and for individuals who contributed that made all this posible. Sorry if my English bad. Not my native language. If you lke the tutorial, you can buy me a beer.
    paypal > [email protected]
    gcash > 09912293147
    IMG_20220520_202046_114.jpg
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    3
    Y
    ygreenes
    Here is the link to the 3/32 firmware provided by mitmachim:

    2.15 GB file on MEGA

    mega.nz mega.nz

    and here is a link to the thread called how to unbrick qin f21 pro:

    מדריך | תיקון שיאומי F21 Pro מ'בריק' (לא מגיב) | HardBrick Fix

    תיקון לשיאומי | F21Pro | Hard Brick Fix אז...
    mitmachim.top mitmachim.top
    View
    2
    JawadEly
    JawadEly
    Jbazt_katuforzs said:
    It appears to be an issues acrossed android 11 OEM firmware phones (Chinese?). Happens to my Blackshark 3 too running Android 11. For some reasons, its a new way of the firmware how to improved battery life (or bugged). I've observed that keeping the app running in the background solves some of my notifications issue. Or if you can get an app drawer that has an option to PIN the app in recents tab preventing to kill the app process. Just try it for yourself goodluck
    Click to expand...
    Click to collapse
    what i did to fix the notification issue is to install the app as an system app, i used magisk module called systemizer.
    have a look on youtube you will find an tutorial.
    View
    1
    Jbazt_katuforzs
    Jbazt_katuforzs
    I bought a cracked version of the 4/64 version of Xiaomi Qin F21 Pro unlocked bootloader, rooted, and with preinstalled fully working Google Playstore and Play services running on the official firmware 2.0.8.

    But lately there's a very nice update development from 4PDA website for the device! It took me a while before I made it work and a lot of trial and error.

    I will make a full detailed easy to follow step by step tutorials on how to do it with all the links for the files required.

    The results will be:

    • A fully converted v1.1.1 custom firmware without the chinese apps
    • TWRP Recovery
    • fully rooted
    • certified playstore and google services fully working
    • THE PROCESS COULD ALSO UNBRICKED THE PHONE

    Requirements:

    • PC
    • UNLOCKED BOOTLOADER Xiaomi Qin F21 Pro (MTK soc) V1.0+ V2.0+ (4/64gb ONLY)
    • Files (will be provided)
    • working brain

    CREDITS:

    • 4PDA FORUMS device thread
    • Telegram Group
    • DEVS for the unlock bootloader tool
    • DEVS for the Custom Firmware
    • DEVS for porting TWRP
    • testers
    • many more I probably forgot

    ...........TUTORIALS SOON
    View
    1
    H
    harryspar
    I thought those were the correct partitions but either I'm wrong or there's a difference between models. I'm really not sure.
    View

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