[GUIDE][UNBRICK] How unbrick your bootloop in MERLIN after flashing TWRP (Xiaomi Redmi Note 9 / Xiaomi Redmi 10X 4G)

[VD171]

hi got a problem:
1. phone bootloops (only Redmi written) then restarts
2. cannot enter fastboot nor recovery, just restarts
tried edl with test point, didn't work
pc doesn't recognise any adb
when vol - and power button pressed, pc fast notificates plug and unplug (guess it means pc recognises phone)

What is your device?

 

[Kain105]

What is your device?

redmi note 9

 

[VD171]

redmi note 9

If you can't enter in fastboot or recovery, the sp flash tool is your last chance, my friend.
Certainly, just flashing the whole rom again, you will have your device alive again.

 

[Kain105]

If you can't enter in fastboot or recovery, the sp flash tool is your last chance, my friend.
Certainly, just flashing the whole rom again, you will have your device alive again.

tried this method
when connected, phone stops bootloop, but when i click on download, sp flash tool stays immobile

 

[VD171]

tried this method
when connected, phone stops bootloop, but when i click on download, sp flash tool stays immobile

What MIUI version is on the device?

 

[Kain105]

What MIUI version is on the device?

12.0.5.0
thank you so much for the interest man

 

[VD171]

12.0.5.0
thank you so much for the interest man

You need to flash in EDL mode.
Just bypass the authentication: https://forum.xda-developers.com/t/...d-flash-in-edl-with-no-auth-for-free.4229679/

 

[definitelynotgeddd]

If you try to boot your device and it keeps in a black screen because outdated TWRP, please follow this guide.

It works with:
- Xiaomi Redmi Note 9
- Xiaomi Redmi 10X 4G

Method 1:

Once your device is on the black screen, plug it on USB (try USB3.0 first).

And then check if it is detected in adb recovery mode:

adb devices

If you can see your device in adb recovery mode, you have to erase misc partition:

dd if=/dev/zero of=/dev/block/mmcblk0p2

After it is done, you can reboot your device to system or fastboot again.

Keep atention, if you execute this command wrong, you will ERASE any other partition and it can brick your device forever and cause more damages.

Method 2:

Once your device is on the black screen, plug it on USB (try USB3.0 first).

And then check if it is detected in adb recovery mode:

adb devices

And then reboot to bootloader:

adb reboot bootloader

And then check if it is detected in fastboot mode:

fastboot devices

If you can see your device in fastboot mode, you have to erase misc partition:

fastboot erase misc

Keep attention, if you try to format misc partition, you will get this error: Formatting is not supported for file system with type 'raw data'.

After it is done, you can reboot your device to system or fastboot again.

Keep atention, if you execute this command wrong, you will ERASE any other partition and it can brick your device forever and cause more damages.

Good luck !



Do you need help with your MERLIN device ?
Read this FAQ: https://forum.xda-developers.com/t/...for-merlin-redmi-note-9-redmi-10x-4g.4225163/

cant detect the device and cant access the recovery or the fast boot either

 

[definitelynotgeddd]

can someone help me it stuck on redmi logo and restart all the time, cant go into fast boot or recovery.

i did this tuturial but it bricked. help please

 

[VD171]

can someone help me it stuck on redmi logo and restart all the time, cant go into fast boot or recovery.

i did this tuturial but it bricked. help please

Try to flash the MIUI rom again using spflashtool.

 

[manfred0912]

hello, so I did install a not updated TWRP and I have the issue of this post, but my computer cannot detect my phone after I get into fastbootmode using the adb reboot bootloader command, I've been trying to install the drivers but at this point idk if that is the problem, so I installed TWRP after I unlocked the bootloader and I didn't activate the programming tools, the debugging usb and the OEM feature, could that be the problem?
sorry for my bad english
PD: maybe I could flash the original rom with SPflashtool, but I cannot get to EDL mode due to the bootloop, is there any command to get into it? like adb reboot EDL or something like that?

 

[VD171]

hello, so I did install a not updated TWRP and I have the issue of this post, but my computer cannot detect my phone after I get into fastbootmode using the adb reboot bootloader command, I've been trying to install the drivers but at this point idk if that is the problem, so I installed TWRP after I unlocked the bootloader and I didn't activate the programming tools, the debugging usb and the OEM feature, could that be the problem?
sorry for my bad english
PD: maybe I could flash the original rom with SPflashtool, but I cannot get to EDL mode due to the bootloop, is there any command to get into it? like adb reboot EDL or something like that?

Did you flash patched vbmeta together TWRP ?

 

[manfred0912]

Did you flash patched vbmeta together TWRP ?

Yes

 

[VD171]

Yes

Try to flash the stock miui again using spflashtool.

 

[acharyvinod52]

If you try to flash the file misc.bin your device can be in bootloop forever, please follow this guide to fix it.

It works with:
- Xiaomi Redmi Note 9
- Xiaomi Redmi 10X 4G

Method 1:

Once your device is on the black screen, plug it on USB (try USB3.0 first).

And then check if it is detected in adb recovery mode:

adb devices

If you can see your device in adb recovery mode, you have to erase misc partition:

dd if=/dev/zero of=/dev/block/mmcblk0p2

After it is done, you can reboot your device to system or fastboot again.

Keep atention, if you execute this command wrong, you will ERASE any other partition and it can brick your device forever and cause more damages.

Method 2:

Once your device is on the black screen, plug it on USB (try USB3.0 first).

And then check if it is detected in adb recovery mode:

adb devices

And then reboot to bootloader:

adb reboot bootloader

And then check if it is detected in fastboot mode:

fastboot devices

If you can see your device in fastboot mode, you have to erase misc partition:

fastboot erase misc

Keep attention, if you try to format misc partition, you will get this error: Formatting is not supported for file system with type 'raw data'.

After it is done, you can reboot your device to system or fastboot again.

Keep atention, if you execute this command wrong, you will ERASE any other partition and it can brick your device forever and cause more damages.

Good luck !



Do you need help with your MERLIN device ?
Read this FAQ: https://forum.xda-developers.com/t/...for-merlin-redmi-note-9-redmi-10x-4g.4225163/

My adb is not detecting plzz help mee

 

[VD171]

My adb is not detecting plzz help mee

Did you install usb drivers?
Did you try other usb ports?
Did you try other usb cables?

 

[acharyvinod52]

Did you install usb drivers?
Did you try other usb ports?
Did you try other usb cables?

Yes but it is only showing the logo in phone and is not being detecting in my laptop

 

[VD171]

Yes but it is only showing the logo in phone and is not being detecting in my laptop

Adb is detected after system startup or on recovery.
Adb will not be detected on booting process.

 

[acharyvinod52]

Adb is detected after system startup or on recovery.
Adb will not be detected on booting process.

But it is not entering into startup or on recovery
It just stays in bootloop only

 

[VD171]

But it is not entering into startup or on recovery
It just stays in bootloop only

You don't to enter in system or recovery.
You can flash using spflashtool while the device turn off and then turn on.
This short time space is enough to spflashtool flash to it.