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

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Leebrown2709

Member
Sep 13, 2021
20
0
And i cant seem to follow what you did. you giving infos a bit skipping on what happened.

at first your problem was on Step 10. I told you to factory reset it.

after 10 there's step 11 and 12

10. Congrats! You now have chinese free apps firmware with TWRP Installed
11. If it wont boot "DEVICE ENCRYPTED", just go to TWRP and FORMAT DATA then reboot (it should boot to system now)

"IT SHOULD BOOT TO SYSTEM NOW" did it boot? did you checked the simcard for signal, etc?

you need to provide these details and confirmed these so its easy to trace where did you mess up the system.

in TWRP you can try to..

- reboot fastboot
- plug phone to pc
- use minimal adb and fastboot (download it)
- type " fastboot devices " (should give you a serial to confirm connection)
- type " fastboot --set-active=a "

this is how to change phone's current slot to A manually. if the firmware is there, it should boot
  1. after download complete, unplug then boot to TWRP then reset factory - error messaged appeared that i showed
  2. Congrats! You now have chinese free apps firmware with TWRP Installed - Am i meant to be able to access the phone and use it as normal then?
  3. If it wont boot "DEVICE ENCRYPTED", just go to TWRP and FORMAT DATA then reboot (it should boot to system now), My phone just took me to duoqin screen then restarted
  4. 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), added this file to my phone
  5. boot to TWRP once again - i managed to load twrp
  6. go to device path /data/media/0 or USB storage path using OTG - click on install and navigated to that file
  7. 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) Clicked on boot.img and then boot partition the swiped it, it showed that it installed
  8. reboot and proceed to installing ROOT and Google services, when i reboot it just bootloops, so i load twrp to get out of bootloop
 

Jbazt_katuforzs

Senior Member
Mar 25, 2008
729
87
Baliuag Bulacan
  1. after download complete, unplug then boot to TWRP then reset factory - error messaged appeared that i showed
  2. Congrats! You now have chinese free apps firmware with TWRP Installed - Am i meant to be able to access the phone and use it as normal then?
  3. If it wont boot "DEVICE ENCRYPTED", just go to TWRP and FORMAT DATA then reboot (it should boot to system now), My phone just took me to duoqin screen then restarted
  4. 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), added this file to my phone
  5. boot to TWRP once again - i managed to load twrp
  6. go to device path /data/media/0 or USB storage path using OTG - click on install and navigated to that file
  7. 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) Clicked on boot.img and then boot partition the swiped it, it showed that it installed
  8. reboot and proceed to installing ROOT and Google services, when i reboot it just bootloops, so i load twrp to get out of bootloop
1. after factory reset, you should boot first to confirm the succesful firmware flash
2. yes you should boot it the first time
3-5. you should transfer it when phone is fully working. if the phone cant even go to system and not booting, there's no boot file to replace for your 7 if that make sense. and there's no point on doing the next steps.

now i know where you having problem. because you dont let it boot first just to check if theres a firmware.

theres something wrong how you reset the phone in TWRP after flashing. you keep on deleting the firmware youve just flashed.


1. go to TWRP > WIPE > ADVANCED WIPE > CHECK 4 BOXES > SWIPE TO WIPE > BACK
2. FORMAT DATA > types "yes" > BACK > BACK
3. REBOOT > POWER OFF
4. RE-FLASH IN PC
5. go to TWRP > WIPE > ADVANCED WIPE > CHECK 4 BOXES > SWIPE TO WIPE > BACK > BACK
6. REBOOT > IF IT SAYS "CURRENT SLOT A" > TAP SYSTEM > IT WILL BOOT
7. WAIT IT TO 1ST BOOT. PLS LET IT BOOT TO ATLEAST CONFIRM THAT THERE'S A FIRMWARE
 
Last edited:

Leebrown2709

Member
Sep 13, 2021
20
0
its not a hardware issue then. after flashing > twrp > reset. did it boot?

1. after factory reset, you should boot first to confirm the succesful firmware flash
2. yes you should boot it the first time
3-5. you should transfer it when phone is fully working. if the phone cant even go to system and not booting, there's no boot file to replace for your 7 if that make sense. and there's no point on doing the next steps.

now i know where you having problem. because you dont let it boot first just to check if theres a firmware.

theres something wrong how you reset the phone in TWRP after flashing. you keep on deleting the firmware youve just flashed.


1. go to TWRP > WIPE > ADVANCED WIPE > CHECK 4 BOXES > SWIPE TO WIPE > BACK
2. FORMAT DATA > types "yes" > BACK > BACK
3. REBOOT > POWER OFF
4. RE-FLASH IN PC
5. go to TWRP > WIPE > ADVANCED WIPE > CHECK 4 BOXES > SWIPE TO WIPE > BACK > BACK
6. REBOOT > IF IT SAYS "CURRENT SLOT A" > TAP SYSTEM > IT WILL BOOT
7. WAIT IT TO 1ST BOOT. PLS LET IT BOOT TO ATLEAST CONFIRM THAT THERE'S A FIRMWARE
I shall follow these steps when im back home. Thanks for the help.....i owe you a beer!
 

Leebrown2709

Member
Sep 13, 2021
20
0
Hmmm. I havent format mine lately so maybe i forgot.

In 6. Try to just swipe. Dont go to advanced wipe and dont check boxes. Im afraid you need to re flash again.

Good luck
See I have no problem flashing and installing this stock firmware rom. Everything works fine on it, although I cant download aurora store or fdroid because it only lets me use the chinese app store and it also seems to go to Slot B on TWRP. Honestly baffled with this. I have had no problems on other phones but when it has came to this, i have nothing but problems. I might just sell the phone!
 

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Jbazt_katuforzs

Senior Member
Mar 25, 2008
729
87
Baliuag Bulacan
See I have no problem flashing and installing this stock firmware rom. Everything works fine on it, although I cant download aurora store or fdroid because it only lets me use the chinese app store and it also seems to go to Slot B on TWRP. Honestly baffled with this. I have had no problems on other phones but when it has came to this, i have nothing but problems. I might just sell the phone!
So use that official firmware then. Try to root and and put playstore. You can try to flash an official dump of a 1.05 firmware. For some strange reasons, your firmware is customed to work on SLOT B.
 

Jbazt_katuforzs

Senior Member
Mar 25, 2008
729
87
Baliuag Bulacan
Or you could try to ask someone to upload their TWRP backup of their freshly setup phone running this firmware and restore it to yours via TWRP. And for safety measures, make sure you twrp backup yours 1st esp the boot, system, modem, etc and save it on your pc
 

Jbazt_katuforzs

Senior Member
Mar 25, 2008
729
87
Baliuag Bulacan
So use that official firmware then. Try to root and and put playstore. You can try to flash an official dump of a 1.05 firmware. For some strange reasons, your firmware is customed to work on SLOT B.
Originally 1st phones came with 1.0.3. no playstore and cant install apps. Then the community figured out a way who to install apps apk manually using a file browser. As firmwares updates comes they are fixing that apk installation. My suggestion is try to find tutorial how to downgrade phone. Read 4pda forum discussions.
But if you said that firmware flashing giving you a success results, i means the firmware is flashed. And you've install TWRP. But it looks like the 2.1.8 firmware kind locked your slot A. That phone is weird
 

Leebrown2709

Member
Sep 13, 2021
20
0
So use that official firmware then. Try to root and and put playstore. You can try to flash an official dump of a 1.05 firmware. For some strange reasons, your firmware is customed to work on SLOT B.

Originally 1st phones came with 1.0.3. no playstore and cant install apps. Then the community figured out a way who to install apps apk manually using a file browser. As firmwares updates comes they are fixing that apk installation. My suggestion is try to find tutorial how to downgrade phone. Read 4pda forum discussions.
But if you said that firmware flashing giving you a success results, i means the firmware is flashed. And you've install TWRP. But it looks like the 2.1.8 firmware kind locked your slot A. That phone is weird
I personally dont want the playstore on device, intend to just use aurora and fdroid. Would be great if someone managed to send me there firmware to see if it worked.

everything works on 2.1.6 but when it asks me to update on the actually phone it does not let me install the 2.1.8 version. I need to try do that through TWRP.

I have been on 4pda but there so much to read through to try find what i am looking for and to understand what to do.
 

Jbazt_katuforzs

Senior Member
Mar 25, 2008
729
87
Baliuag Bulacan
I personally dont want the playstore on device, intend to just use aurora and fdroid. Would be great if someone managed to send me there firmware to see if it worked.

everything works on 2.1.6 but when it asks me to update on the actually phone it does not let me install the 2.1.8 version. I need to try do that through TWRP.

I have been on 4pda but there so much to read through to try find what i am looking for and to understand what to do.
Yes all ota updates will fail bcoz youve already unlocked the bootloader. I suggest you downgrade to what version you know manual installing apps is working.
Or flash a full dump or an offical firmware but you need to relocked your bootloader for the original fàctory firmware to flash or try to restore the oem recovery. Your phone is different in software and hardware configuration from the batches that can use this tutorial. Im sure that version has already been talked in 4da forum ang probably there's a workaround how to downgrade it or make this firmware work. You could also try to ask in telegram groups coz 4pda is in Russian.
 

jachu76

Member
Jan 26, 2021
32
8
hello, please provide the link which model to buy to upload custom ROM .. which version to choose, Google or Amazon?
Ideally, the bootloader should be unlocked already
 
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MIRAWE

Member
Apr 17, 2014
11
0
I updated my phone to version 3/32 with this version, but after the download is complete, it is not working and the screen is black
Please how do I fix it
302098762_3196491260613259_3378287735197119049_n.jpg
 

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Amsterdam
I'm stuck at step "10. after download complete, unplug then boot to TWRP then reset factory"
> * + 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

Isn't working for me.

This guide https://unofficialtwrp.com/twrp-3-5-0-xiaomi-qin-2-pro/ says "Reboot Phone to twrp recovery by Pressing volume up and Power button" but this phone doesn't even have a volume button.. Any ideas?
 

ruiseW

New member
Sep 4, 2022
1
0
I've bought this phone but with the amazon store, will i be able to do this tuturial? its the 4/64 gb
 

Henry10Sugar

Member
Sep 7, 2022
5
1
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
View attachment 5618807
 

Jbazt_katuforzs

Senior Member
Mar 25, 2008
729
87
Baliuag Bulacan
I'm stuck at step "10. after download complete, unplug then boot to TWRP then reset factory"
> * + 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

Isn't working for me.

This guide https://unofficialtwrp.com/twrp-3-5-0-xiaomi-qin-2-pro/ says "Reboot Phone to twrp recovery by Pressing volume up and Power button" but this phone doesn't even have a volume button.. Any ideas?
Owl button + "*" + power on. When logo appears, release power button
 

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  • 1
    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.
    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
  • 5
    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
    2
    Here is the link to the 3/32 firmware provided by mitmachim:

    and here is a link to the thread called how to unbrick qin f21 pro:
    2
    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
    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.
    1
    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
    1
    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.
    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