Problem with 9C NFC - Redmi 9C Questions & Answers

All custom recoveries goes just to black screen and pc regocnizes it as adb recovery. Nothing helps.

can somebody help...

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Unlocking bootloader problem

I have a problem with my phone ... i unlocked bootloader,flashed boot.img via fastboot, installed custom rom.
Then i installed windows 10 on my pc and when i try to install adb fastboot drivers,i turn off phone,press power + volume up,light turns blue but after that it skip to Sony logo screen and device is on after. So my problem is i can't put my phone in fastboot mode.. I did it in past, a few times when i tried several custom room and needed to flash img via fastboot,but now it seems it won't work. Anyone know how to solve this?
VladHD said:
I have a problem with my phone ... i unlocked bootloader,flashed boot.img via fastboot, installed custom rom.
Then i installed windows 10 on my pc and when i try to install adb fastboot drivers,i turn off phone,press power + volume up,light turns blue but after that it skip to Sony logo screen and device is on after. So my problem is i can't put my phone in fastboot mode.. I did it in past, a few times when i tried several custom room and needed to flash img via fastboot,but now it seems it won't work. Anyone know how to solve this?
Click to expand...
Click to collapse
1. Disable driver signature verification.
2. Reinstall adb fastboot drivers
Yeah ... i did that again and now is working ... dunno what was the problem from the begging. Thanks

Cannot install TWRP recovery

Which is weird as it worked before.
Basic stuff. Android 6.0.1, MIUI 8.1
Bootloader unlocked
USB ADB drivers installed
Debugging on
Run TWRP and device is recognised, TWRP isntalled successfully but when I reboot phone into recovery, I get the standard "phone connected to usb cable" graphic. Im at a loss to know it wont go into TWRP, suggestions please?
Need to root to adjust in cqll volume settings, thx.
2bullish said:
Which is weird as it worked before.
Basic stuff. Android 6.0.1, MIUI 8.1
Bootloader unlocked
USB ADB drivers installed
Debugging on
Run TWRP and device is recognised, TWRP isntalled successfully but when I reboot phone into recovery, I get the standard "phone connected to usb cable" graphic. Im at a loss to know it wont go into TWRP, suggestions please?
Need to root to adjust in cqll volume settings, thx.
Click to expand...
Click to collapse
Not sure about alle the steps you did or did not do.
But if you install TWRP and then reboot back to MIUI, it will overwrite the recovery again.
From the TWRP.me site:
fastboot flash recovery twrp.img
fastboot reboot
Note many devices will replace your custom recovery automatically during first boot. To prevent this, use Google to find the proper key combo to enter recovery. After typing fastboot reboot, hold the key combo and boot to TWRP. Once TWRP is booted, TWRP will patch the stock ROM to prevent the stock ROM from replacing TWRP. If you don't follow this step, you will have to repeat the install.
Ok, followed all the steps exactly, the phone boots into twrp, then i reboot in system, or let it reboot by disconnecting, same thing happens. Black screen MI logo, bootloader unlock, in red, at the bottom of the screen with an open padlock.
Now it wont boot at all.
This is weird, I can boot into fastboot and recovery but when i try to flash, the device is redognised but i cannot see it in the drop down menu to find the rom. Grrrrrr im stuck.
2bullish said:
This is weird, I can boot into fastboot and recovery but when i try to flash, the device is redognised but i cannot see it in the drop down menu to find the rom. Grrrrrr im stuck.
Click to expand...
Click to collapse
OK, if you want to keep MIUI, just flash MIUI again and it should install the needed firmware, recovery etc.
You can use the recovery zip for this or the fastboot gz version to install (both should work).
If you want a custom rom installed, go to the Lineage thread (i use that since feb, with weekly updates) or another one.
Read the first few post carefully, but if you want to install it (Lineage), do flash the firmware first via recovery before flashing the rom (don't forget this one).
Update. I can get into TWRP recovery but have no back up.
If I try to boot into system I get a black screen with Mi logo and a red unlocked boot loader padlock graphic.
If i boot into fast boot and run miflash, the phone is recognised but the sd storage does not appear in the drop down at all.
I cannot use the pcsuite software and if the phone is not in TWRP or fastboot mode it is on the black screen with logo with red unlocked padlock and is not recognised by the PC. I dont know what else to do, any help will be greatly appreciated.
Found out the problem it was supersu, gonna try a different version
2bullish said:
Found out the problem it was supersu, gonna try a different version
Click to expand...
Click to collapse
Glad you found the problem.
I think that MIUI has already build in the SU via the Developer options, but i'm not sure of that.
If you think of Lineage, just flash the Lineage Su addon after the Lineage rom.
Works great.
2bullish said:
Update. I can get into TWRP recovery but have no back up.
If I try to boot into system I get a black screen with Mi logo and a red unlocked boot loader padlock graphic.
If i boot into fast boot and run miflash, the phone is recognised but the sd storage does not appear in the drop down at all.
I cannot use the pcsuite software and if the phone is not in TWRP or fastboot mode it is on the black screen with logo with red unlocked padlock and is not recognised by the PC. I dont know what else to do, any help will be greatly appreciated.
Click to expand...
Click to collapse
MIUI has some sort of verification on boot. If it detects a custom recovery different from stock one, it won't boot. You need to use zcx twrp. It can bypass this verification.

[FIXED] Fastboot? Recovery bootlooping, but never getting there

Hi All, I need fastboot!
Perhaps someone can help with my brick? I've unlocked the bootloader, installed TWRP and had lineageOS 18.1 installed once. The screen was dim so I tried to flash DotOS. And got a "failed to mount /tmp/com.android.resolv.apex to loop device /dev/block/loop16" error so I tried to reinstall stock 57 ROM.
I did "fastboot flash recovery boot.img" with the decrypted boot.img hoping to get colourOS recovery.
The phone is now bootlooping trying to get into recovery mode. It won't power off or respond to button presses except vol up + vol down seems to delay the reboot on a blank screen.
I was hoping to get to fastboot mode to flash TWRP. Can anyone help? Should I surrender and accept the bricking?
you can get back to stock by install the stock rom, vendor, and kernel with adb drivers and commands.
or
if your mobile is MIUI you can just use the software to revert back to stock rom remember it re-locks the bootloader and again you need to unlock
The phone is currently boot looping.
I can't even turn it off.
It displays RealME/Android logo, then small "> RECOVERY MODE" text at bottom, then "Orange State" text. Repeat..
It has no response to a usb cable - no usb messages in dmesg. So it is not detected by adb or fastboot.
When the battery finally goes flat, my only hope is that I can get fastboot to flash TWRP into the recovery partition. I am not confident of this :-(
frolyx said:
The phone is currently boot looping.
I can't even turn it off.
It displays RealME/Android logo, then small "> RECOVERY MODE" text at bottom, then "Orange State" text. Repeat..
It has no response to a usb cable - no usb messages in dmesg. So it is not detected by adb or fastboot.
When the battery finally goes flat, my only hope is that I can get fastboot to flash TWRP into the recovery partition. I am not confident of this :-(
Click to expand...
Click to collapse
did you ever get this solved and fixed? i have accidently done the same thing.
hey guys follow this youtube
managed to unbrick my phone
smiley.raver said:
did you ever get this solved and fixed? i have accidently done the same thing.
Click to expand...
Click to collapse
Not yet, but I will try the youtube method above..
This recovered the Phone!
But, win10 reported the MCT extractor contained a worm (the python script under linux didn't work). I'm not sure I can trust this phone 100% from now on LOL!
the bypass just deactivates mtk hardware verificaton as normally they have a special dongle they use with the software download
I havent had any issues
I will upload thw bypass i use which doesnt havw any virus

Question Can't boot into anything, only shows charging screen then turns itself off after. PLEASE HELP ME! How do I fix this???

Yesterday I unlocked my phone with the official Xiaomi unlock tool, Then it wiped everything, after setting my phone up, I flashed TWRP (not for my device but for redmi k20, I thought 9T and K20 is the same) and now I'm stuck on fastboot, I tried power button + volume buttons but still stuck on fastboot, I tried adb but still stuck, I tried Reiboot for Android but still stuck. So I used XiaoMiTool V2 (unofficial) and selected 'my device is bricked' then it asked me to select what device am I using, I selected k20 bc I thought it's the same with redmi power, after downloading a rom for an hour, it tries to install but fails because it detects that it's not k20, so I closed it and rebooted my device, now my device only shows the charging battery icon, can't boot into fastboot, can't boot into anything, PC can't detect my phone including adb. Please help me (for free), I really need your help. Thanks!
Your mistake was booting a wrong twrp and then a wrong fastboot rom. You could have saved your device when it was in fastboot mod by flashing an official fastboot rom for your device. But now your device seems hopeless. I think you have no option but to send it to a service center.
In this Case, buy only from Trusted Places! Or Learn how to Flash properly.
If the bootloader is unlocked...
Flash vbmeta.img
Then flash the suitable recovery for 9 power... It might boot to recovery then

hardbrick redmi 9c nfc no recovery no fastboot no boot no charge no vibration no usb debugging

phone is died before was vibrates and i have for 1s logo but now i black screen and no vibration i don't know what to do i try to fix it but didn't work i used many of software.
Use SP Flash tools and watch a video on youtube
ilovedogs12 said:
phone is died before was vibrates and i have for 1s logo but now i black screen and no vibration i don't know what to do i try to fix it but didn't work i used many of software.
Click to expand...
Click to collapse
The solution
Post in thread 'HARDBRICKED REDMI 9C ANGELICA NO BOOT NO RECOVERY NO FASTBOOT ONLY VIBRATES' https://forum.xda-developers.com/t/...-fastboot-only-vibrates.4494095/post-88308869
brav3h3ar8 said:
The solution
Post in thread 'HARDBRICKED REDMI 9C ANGELICA NO BOOT NO RECOVERY NO FASTBOOT ONLY VIBRATES' https://forum.xda-developers.com/t/...-fastboot-only-vibrates.4494095/post-88308869
Click to expand...
Click to collapse
didn't work

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