Database Develop

My Z1 doesn't determined by PC in fastboot mode

Hi guys! I need your help. I have z1 with ROOT and custom recovery and i would like to update it to android m. The main probleme - bootloader, i should unlock it. But i can't do it because phone doesn't determined by pc in fastboot mode or flashmode and when phone is off doesn't determined at all. But even when phone is on, pc detected phone not always, just sometimes, and phone doesn't charging. ADB drivers is installed, drivers for flashtool mode and fastboot is installed. Command window says "waiting for device" when i want to boot my phone in fastboot. When phone is on ADB works fine. So i've read many topics about problems like that and didn't find the solution. Maybe can anybody help me please?

In ADB , use the command: adb reboot bootloader
The phone will reboot and you'll be in fastboot mode and the phone will show a deep blue notification light.
You need to install fastboot drivers from the driver package bundled along with flashtool before this. So u have to donwload flashtool first
Also, if u're going to unlock the bootloader then back up your TA partition.

In ADB , use the command: adb reboot bootloader
The phone will reboot and you'll be in fastboot mode and the phone will show a deep blue notification light
Click to expand...
Click to collapse
Yeah, I did it, the phone was showing blue led, but then it goes nothing, then pc doesn't "see" the phone. I have already installed flashtool and drivers with it for fastest and flashtool. Also I have already made a backup of TA through flashtool.
So I can do something with phone through flashtool or adb when phone is on, but when phone is off I can't do anything. I have heard that reason of that problem can be broken phone's USB port. What do you think?
And sorry for my terrible English

I've connected phone to pc in flashmode through NDR Utils, but fastboot still doesn't work

honestly, im stumped!! . AFAIK its not a problem with the usb port cuz as you said it works fine with adb. Did you try a different usb cable.
You should probably try to reinstall the fastboot drivers
But if you just wanna unlock the bootloader then you can do that with flashtool I think.

But if you just wanna unlock the bootloader then you can do that with flashtool I think.
Click to expand...
Click to collapse
Yes, but to unlock bootloader through flashtool I should go to fastboot

wait, does the blue led come on and disappear?? it sounds like a loose USB cable

masterofnocrack said:
wait, does the blue led come on and disappear?? it sounds like a loose USB cable
Click to expand...
Click to collapse
No, the blue led come on and lights until i unplug the cable.
Is it not a normal?

I have the same problem xD
All the time it worked, wtf

zawy. said:
I have the same problem xD
All the time it worked, wtf
Click to expand...
Click to collapse
Did you find the solution?
What did you do to fix it? Maybe we can help to each other

Hi! It's me again And i still didn't solved my probleme. So, i can connect my phone to PC and it recognize as Android device -> ADB interface, and as Xperia z1. If i just connect powered off phone to PC or connect phone in flash mode, then it recognize as USB devices -> SOMC Flash Device, is it right? Ok, when i want to connect phone in fastboot, phone shows blue LED and it goes nothing, PC don't determine the phone and i can't unlock bootloader

Can't connect from usb

i was trying to connect my phone with usb cable but my pc not recognize any connection while the power charging working normally
i tried to check through fastboot but still the same also i tested 2 cables and 2 PCs still the same
my phone is rooted , bootloader unlocked and the recovery show no command
please help

Any help please ? If no solution how to relock bootloader again from inside os without fastboot so i can send it to warranty ?

try installing drivers from miunlock
try another prort
try another pc
u can lock bootloader with mi flash
also what is ur problem with phone so u need to RMA it?

Recovering from bad bootloader flash

I have an XZ1C that I seemed to have damaged the bootloader during a flashing operation.
I have a working OS and can reboot the device with adb without problems via an "adb reboot bootloader" call.
When the device comes back, I'm unable to install the device drivers since the USB IDs are different than are supported from the regular XZ1C driver. My device is reporting as VID 0FCE PID 0DDE. This still seems like an Xperia IDE, but the ID is not supported from the regular Xperia driver.
Does anyone have any ideas how I can reflash the proper bootloader, or have pointers to a specific driver that might work given the odd mode that I've managed to mangle my XZ1C into?
Much thanks!

I didn't understand, what you mean with I can reboot the device via adb....
From my personal view : if the bootloader is broken, no connection via adb could be possible, no fastboot is possible and so on....
Maybe I'm wrong?
If the device is available, is the USB debugging in the Dev menu and OEM unlock enabled? Could you accept the fingerprint?

The VID/PID combo of 0FCE:0DDE is the fastboot device identifier.
If you're trying to get to flash mode, the procedure is to:
- Disconnect the phone from USB.
- Power off the phone.
- Hold the Vol-Down button.
- While holding Vol-Down, connect the phone to your computer via USB.
This will activate flash mode with a VID/PID of 0FCE:B00B.
You can tell the difference between the two by the color of the notification LED.
Fastboot mode has a blue notification LED, while the flash mode color is green.

Not sure I understand fully what you mean but if you're running windows, change the driver manually to Android ADB device once it's plugged in. Windows should recognize fastboot mode at that point you can flash a new boot image.

Question no fastboot connection

I have had the Mi 11 since today, I wanted to unlock the boot loader, but my PC doesn't recognize it.
looked for adb drivers and downloaded them, did not work.
I turned on USB debugging.
can someone give me a tip or with which driver it would work?

Zimty86 said:
I have had the Mi 11 since today, I wanted to unlock the boot loader, but my PC doesn't recognize it.
looked for adb drivers and downloaded them, did not work.
I turned on USB debugging.
can someone give me a tip or with which driver it would work?
Click to expand...
Click to collapse
I had the same problem after sending a new device in exchange for my defective one. It was not recognized at all on the USB port. In Fastboot mode only in sideload mode. I just did a factory reset. The device was then displayed as unauthorized in ADB mode, but Fastboot mode is sufficient to unlock the bootloader It was then displayed correctly there. However, the waiting time has increased to over 500 hours. The first device lasted 260 hours. No matter. Now it's in the drawer until August.

Question mi 11 ultra bootloop after magisk install

Hello to all. I have mi 11 ultra .I wanted to unroot the device. I installed magisk for that,after disabling USB debugging and turning off developer options.After restart, device stuck on boot screen with a black screen.
Bootloader Unlocked
USB debugging is not enabled
I can not enter recovery mode using Volume Up+Power button combination.It does not work.
I can enter fastbood mode using volume down+power combination but usb debugging not enabled.
There is no way i can find, recovering or factory resetting the device.
I need help.

You have to flash miui stock rom in fastboot mode , using windows pc.

Bobfish said:
You have to flash miui stock rom in fastboot mode , using windows pc.
Click to expand...
Click to collapse
May i use it while developer options turned off and usb debugging disabled? When i plug it to windows pc,while the phone is at fastboot mode, device manager does not detect any usb.

You
muraxz said:
May i use it while developer options turned off and usb debugging disabled? When i plug it to windows pc,while the phone is at fastboot mode, device manager does not detect any usb.
Click to expand...
Click to collapse
Download and latest adb drivers.
Older drivers can't detect the phone.
Use windows 10 , there could be issues with windows 11 with adb/fastboot.

I used my old phone's cable and it was detected. Mi flash tool did not recognize but mi flash tool pro worked. I flashed the EEA rom. Since i am not familiar with all the stuff, it took all of the night.But i managed to make it work. I can not thank you enough for your answers.