Computer recognises phone but phone doesn't think it's connected? - Nexus 6P Q&A, Help & Troubleshooting

I'm trying to unlock the bootloader so that I can flash a custom recovery.
I've enabled both unlocking the bootloader and USB debugging and the computer recognizes the phone when I type "fastboot devices" in the terminal. When on the bootloader screen i've wrote "adb devices" and the computer recognised the phone.
I've then typed "fastboot flashing unlock" and a list of commands come up. The same list comes up even when I type "sudo fastboot flashing unlock".
"sudo fastboot oem" unlock gives me a FAILED (remote: unknown command) message.
What can be the cause of this problem?
My linux computer recognizes my phone when I type fastboot devices, but judging by the last line on the bootloader the phone doesn't think it's connected to the computer.

tbh just use nexus root toolkit

CloudPaganini said:
I'm trying to unlock the bootloader so that I can flash a custom recovery.
I've enabled both unlocking the bootloader and USB debugging and the computer recognizes the phone when I type "fastboot devices" in the terminal. When on the bootloader screen i've wrote "adb devices" and the computer recognised the phone.
I've then typed "fastboot flashing unlock" and a list of commands come up. The same list comes up even when I type "sudo fastboot flashing unlock".
"sudo fastboot oem" unlock gives me a FAILED (remote: unknown command) message.
What can be the cause of this problem?
My linux computer recognizes my phone when I type fastboot devices, but judging by the last line on the bootloader the phone doesn't think it's connected to the computer.
Click to expand...
Click to collapse
Try fastboot oem unlock.

fastboot flashing oem unlock.
http://www.androidpolice.com/2015/1...become-common-for-many-devices-in-the-future/

Related

[Q] Trying to unlock write failed error

Just got Nexus 4 and trying to unlock the bootloader.
Follow the instructions and Fastboot detetcts the Nexus ok using command "fastboot devices"
But when I then type "fastboot oem unlock" I get "command write failed unknown error"
Any ideas please?
robolots said:
Just got Nexus 4 and trying to unlock the bootloader.
Follow the instructions and Fastboot detetcts the Nexus ok using command "fastboot devices"
But when I then type "fastboot oem unlock" I get "command write failed unknown error"
Any ideas please?
Click to expand...
Click to collapse
Off the top of my head: try another port, another cable reinstall drivers.

Unlocking bootloader unofficially?

Hey guys! Is there any way to unlock Redmi Pro's bootloader without waiting for permission from Xiaomi? Have anybody found a way to bypass it?
easy, first make sure you have spflash tool and a working fastboot rom (just in case of trouble)
Next make sure your computer has working fastboot and adb.
Enable USB debugging on the device.
Enable OEM unlock in the Developer options settings on the device.
Connect the device to the computer through USB.
From a terminal on a computer, type the following to boot the device into fastboot mode:
adb reboot bootloader
Once the device is in fastboot mode, verify your PC sees the device by typing fastboot devices
If you don't see your device serial number, and instead see "<waiting for device>", fastboot is not configured properly on your machine.
From the same terminal, type the following command to unlock the bootloader:
fastboot oem unlock
Device is wiped & unlocked & no OS
Now flash twrp, reboot into it and copy xiaomi.eu rom on card & install
Good luck
hello i haven't on my xiaomi redmi pro eom unlock in the devlopper mode help me pls
criszz said:
easy, first make sure you have spflash tool and a working fastboot rom (just in case of trouble)
Next make sure your computer has working fastboot and adb.
Enable USB debugging on the device.
Enable OEM unlock in the Developer options settings on the device.
Connect the device to the computer through USB.
From a terminal on a computer, type the following to boot the device into fastboot mode:
adb reboot bootloader
Once the device is in fastboot mode, verify your PC sees the device by typing fastboot devices
If you don't see your device serial number, and instead see "<waiting for device>", fastboot is not configured properly on your machine.
From the same terminal, type the following command to unlock the bootloader:
fastboot oem unlock
Device is wiped & unlocked & no OS
Now flash twrp, reboot into it and copy xiaomi.eu rom on card & install
Good luck
Click to expand...
Click to collapse
press in settings about phone 7 time on miui version
after that you will find developer options in aditional settings
criszz said:
press in settings about phone 7 time on miui version
after that you will find developer options in aditional settings
Click to expand...
Click to collapse
Sadly there is no oem unlock option in developer options. I'm on MIUI 8.1.2.0 Stable (MHQCNDI)
EDIT: i just switched to Developer ROM and still nothing.
sorry, my mistake i use another laguage, activate usb debuging , conect to the pc and run adb , if some permision asked alow
I can't unlock it using fastboot oem unlock since it's mediatek device =/ When I try I get
(bootloader) Start unlock flow
FAILED (remote:
Unlock failed - Err:0xffffffff
)
finished. total time: 0.016s"
Click to expand...
Click to collapse
i unlocked that way, maybe you do something wrong
try another way without unlocking try flash twrp with spflash tool
Do you remember what miui version did you have when you unlocked this way? Maybe I can roll back to it and then try again. Were you using developer or stable rom?
i was on fake/vendor rom this i thinlk http://blog.geekbuying.com/index.ph...ndroid-6-0-smartphone-firmware-212302-161109/
Crissz, your bootloader was allready unlocked when you received your phone. You cannot do a simple oem unlock via fastboot with a xiaomi phone. It's a fact..
@KarKlim please try fastboot oem unlock-go comand too
This method does not work as many say
(bootloader) Start unlock flow
FAILED (remote:
Unlock failed - Err:0xffffffff
)
finished. total time: 0.006s
C:\Program Files (x86)\Minimal ADB and Fastboot>
Redmi Pro with Latest stable china rom
Is it possible? Xiaomi regoke my unclock previleges and now i have my Redmi Pro stuck in China Developer Rom. No way to install multilanguase Xiaomi.eu... can someone help please?
Maybe try with a new xiaomi account with different sim card.
And then from a different internet ip, from your friend or something.
I have no idea how they collect data or what. I'm just guessing here.
wow great news for Xiaomi lovers:
wow great news for Xiaomi lovers:
GeekBuying offering 73% off ( Xiaomi Redmi Pro 3GB + 64GB) 184.65 EURO
spam, all post of this user is spam
So, I bought my Redmi Pro today and i want to install xiaomi.eu ROM. Do I have to unlock bootloader first? Or can I do it with unlock bootloader?
No OEM in my xiaomi redmi pro
[[/B]
criszz said:
easy, first make sure you have spflash tool and a working fastboot rom (just in case of trouble)
Next make sure your computer has working fastboot and adb.
Enable USB debugging on the device.
Enable OEM unlock in the Developer options settings on the device.
Connect the device to the computer through USB.
From a terminal on a computer, type the following to boot the device into fastboot mode:
adb reboot bootloader
Once the device is in fastboot mode, verify your PC sees the device by typing fastboot devices
If you don't see your device serial number, and instead see "<waiting for device>", fastboot is not configured properly on your machine.
From the same terminal, type the following command to unlock the bootloader:
fastboot oem unlock
Device is wiped & unlocked & no OS
Now flash twrp, reboot into it and copy xiaomi.eu rom on card & install
Good luck
Click to expand...
Click to collapse
Can you help me please because I don't have a OEM unlock option in redmi pro and how to unlock bootloader... please man
criszz said:
easy, first make sure you have spflash tool and a working fastboot rom (just in case of trouble)
Next make sure your computer has working fastboot and adb.
Enable USB debugging on the device.
Enable OEM unlock in the Developer options settings on the device.
Connect the device to the computer through USB.
From a terminal on a computer, type the following to boot the device into fastboot mode:
adb reboot bootloader
Once the device is in fastboot mode, verify your PC sees the device by typing fastboot devices
If you don't see your device serial number, and instead see "<waiting for device>", fastboot is not configured properly on your machine.
From the same terminal, type the following command to unlock the bootloader:
fastboot oem unlock
Device is wiped & unlocked & no OS
Now flash twrp, reboot into it and copy xiaomi.eu rom on card & install
Good luck
Click to expand...
Click to collapse
Not worked for redmi note 8 pro ......failed.....

fastboot commands not reacting after oreo update

hi, yesterday i updated my bootloader unlocked and rooted g6 to oreo via lg bridge. so far so good. now i am trying to flash twrp with fastboot command but i only get "waiting for any device". i can put the phone into fastboot mode with adb command but then still no reaction to fastboot commands from there. usb debugging is on. allow oem unlocking is frozen (grey) in developer options but it says "oem alreasy unlocked".

Unable to unlock bootloader

hello, I have been trying to unlock the bootloader of my lenovo k6 power with no luck. I have followed the steps in https://forum.xda-developers.com/k6-power/how-to/guide-karate-t3663070 but the device is booting to fastboot mode and in minimal adb when "fastboot devices" is typed it shows the device.But when i type this command "fastboot -i 0x17ef oem unlock-go", its shows waiting for device.
Also i have installed the lenovo drivers from the phone itself and tried other lenovo usb driver version with no luck. How can i solve this,Please help.

./fastboot -i 0x0fce oem unlock 0x Invalid option error

I'm trying to flash a custom rom to my X Compact. I'm using Mac OS with the latest release of ADB platform tools.
Whenever i try to input ./fastboot -i 0x0fce oem unlock 0xmyunlockcode i get a -i invalid command error
Usb debugging and oem unlock in my phone are set to on and i can see the phone when i enter fastboot devices.
What's the problem here?
Thanks.
Deadlypants02 said:
I'm trying to flash a custom rom to my X Compact. I'm using Mac OS with the latest release of ADB platform tools.
Whenever i try to input ./fastboot -i 0x0fce oem unlock 0xmyunlockcode i get a -i invalid command error
Usb debugging and oem unlock in my phone are set to on and i can see the phone when i enter fastboot devices.
What's the problem here?
Thanks.
Click to expand...
Click to collapse
Never used fastboot on a Mac, but I wonder if trying a different fastboot version might help, or just type fastboot help, and see options. Maybe what used to be -i option has changed in newer version...

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