Hi all,
I've been trying to flash ElementalX kernel on my Nexus 9... and somehow I messed it up completely.
Here are the facts:
1. Booting is stuck on Google logo with red writing "This is a development device not intended for production use" at the top
2. Bootloaders is locked - I can see it in fastboot (Device State - LOCKED)
3. There's no OS to boot into (to enable "fastboot oem unlock" command)
4. "fastboot oem unlock" results in "(bootloader) Permission denied for this command!"
5. I can boot into TWRP recovery and I can sideload files
At one point bootloader was unlocked, but I (stupidly) issued "fastboot oem lock" command which screwed everything up....
What to do, any advice?
Thank you!
Try searching before posting. http://forum.xda-developers.com/showthread.php?p=59799854, http://forum.xda-developers.com/showthread.php?p=61748288. It's even stickied.
Sent from my Nexus 9 using XDA Free mobile app
Related
I have a little isssue with the bootloader...
Sometime ago, i have unlock the bootloader easily, no problems.
But now, i have checked if it is unlocked, and it is no longer
So i have tried to re-unlock it, and fastboot display that's okay and my phone reboot into recovery.
I have rebooted it into bootloader mode, typed "fastboot oem device-info" and nobody is true !
What do you think about this ?
Ps: Sorry for bad english
Okay, calm down.
Go to developer options and see if "OEM Unlocking" is enabled. If not, enable it.
Cool. Now enable USB Debugging, connect the phone to PC, open CMD and type
Code:
adb reboot bootloader
then
Code:
fastboot oem unlock
Download TWRP from the official website, rename it to recovery.img and then
Code:
fastboot flash recovery recovery.img
Now you have a recovery and an unlocked bootloader. Profit?
I hope this helps.
Thanks for your reply, but it doesn't work
I have only my old recovery (who is twrp in is latest version, no problems with that )
But suddenly i wondere if unlocked bootlooder is useful if i have already an recovery
Finally, i have followed the mega unbrick guide.
Hi guys!
does anyone knows how to unlock bootloader for lyf flame 1.
I have tried many methods but didn't work
I have tried getting into fast boot and typing "fastboot oem unlock" I am getting "FAILED <remote: unknown command>"
but nothing works.
i have tried using different tools (all in one tools, unlock my bootloader and many) but nothing works
it has been very hard to root my mobile as there is no full rooted script for my mobile and I have many tools to root my mobile(iroot,vroot,mobogenie,unlockroot,safe root,kingoroot,king root,mobile go,zroot,poot,etc) but kingroot has worked but not giving full permission. i cant give shell commands.
please help me to unlock my bootloader
my phone:LYF Flame-1 (LS-4503) running 5.1.1
kvbkiran said:
Hi guys!
does anyone knows how to unlock bootloader for lyf flame 1.
I have tried many methods but didn't work
I have tried getting into fast boot and typing "fastboot oem unlock" I am getting "FAILED <remote: unknown command>"
but nothing works.
i have tried using different tools (all in one tools, unlock my bootloader and many) but nothing works
it has been very hard to root my mobile as there is no full rooted script for my mobile and I have many tools to root my mobile(iroot,vroot,mobogenie,unlockroot,safe root,kingoroot,king root,mobile go,zroot,poot,etc) but kingroot has worked but not giving full permission. i cant give shell commands.
please help me to unlock my bootloader
my phone:LYF Flame-1 (LS-4503) running 5.1.1
Click to expand...
Click to collapse
If your android rooted using KingRoot then it must your bootloader is unlocked.
Try command in fastboot mode
"fastboot oem device-info" then see bootloader unlocked is true or false. If true means your bootloader is unlocked.
What ever i am typing its saying only "FAILED <remote: unknown command>"
Only the working code is "fastboot devices" 😥
kvbkiran said:
What ever i am typing its saying only "FAILED <remote: unknown command>"
Only the working code is "fastboot devices" 😥
Click to expand...
Click to collapse
Is your android detect in fastboot mode. When you run command fastboot devices then device shows their serial number.
yes it is showing my device with some serial key
is anytihng possible with download mode
Please anyone help me to unlock bootloader
please can anyone reply me
kvbkiran said:
please can anyone reply me
Click to expand...
Click to collapse
Have you enabled oem unlock option in developer setting.
yeah i did it but nothing happens
kvbkiran said:
yeah i did it but nothing happens
Click to expand...
Click to collapse
It may be because your android secure with FRP protection. Try Merapitool to remove FRP protection from your android.
there is nothing like that i have already bypassed frp
i have my resetted gmail account and also i have succesfully using my mobile
and i dont think removing frp will helps in unlocking bootloader
please help me i cant able to do anything from the bootloader
fastboot is detecting but cant able to execute any commands
Buddy may be ur boot.img needs to be modified root device using this . Toolkit
https://forum.xda-developers.com/android/general/how-to-rooting-guide-lyf-water-1-ls-5002-t3563825
Its a fastboot based if this works then other commands will start working
this is for LYF water
will it works me ?
please reply me
still i tried but still same problem
getting failed <remote: unknown command>
Can u send Boot.img
?
Also make sure usb debugging is enabled and drivers are installed for ur device .
please reply quick. Send me ur boot.img
Yes i have enabled the usb debugging and installed the perfect drivers for my phone
i have just extracted the boot.img from the flash file
https://drive.google.com/open?id=0B5f1QUUHbjhccjMzWHN3ZFNVVW8
Flame 1 and flame 8 these both devices have fastboot problems these devices never boot in fastboot properly. They just stuck at "power by android" screen when given command "reboot bootloder" or maually from recovery "reboot to bootloader"
Hey xda plz help me how to unlock bootloader for Lenovo a3300-hv plz help running ROM 4.4.2
Hello
I have a problem when I want to unlock my nexus 9.
First I have a problem because my tablet freezed.
I have made a factory reset, then google said me : used the first account to use your tablet" but I lost this account
So I want to flash my tablet.
to do that, I use the tutorial on HTC site. on step 5 they say:
type adb oem unlock
but the CMD windows just say:
<waiting for device>
then I try to show devices with adb device but my window don't show device.
to do those step my tablet was in recovery more "fastboot usb"
can you help me?
thanks
Jack
@jackvig Looks like you encountered Factory Reset Protection!
You can not use adb commands while in fastboot mode! "fastboot devices" should list your device.
And the command to unlock is "fastboot oem unlock" not adb!
Plus you won't be able to unlock the bootloader unless you have selected the option to do so in developer options, since you have factory reset that option may have been turned off even if you set it previously.
Your going to have to try and remember your account password to make the device usable.
Depending on what version/patch of the rom your device is on it maybe possible to Bypass FRP, google it.
If your device was on a very recent patch level, no bypass trick will work.
corkiejp said:
@jackvig Looks like you encountered Factory Reset Protection!
You can not use adb commands while in fastboot mode! "fastboot devices" should list your device.
And the command to unlock is "fastboot oem unlock" not adb!
Plus you won't be able to unlock the bootloader unless you have selected the option to do so in developer options, since you have factory reset that option may have been turned off even if you set it previously.
Your going to have to try and remember your account password to make the device usable.
Depending on what version/patch of the rom your device is on it maybe possible to Bypass FRP, google it.
If your device was on a very recent patch level, no bypass trick will work.
Click to expand...
Click to collapse
thanks @corkiejp for your reply
I agree with you for fastboot instead of adb but the result is the same.
I cannot go inside the tablet to change parameters
Some forum said that I can Unlock in recovery mode
Is it true?
when my tablet is in recovery mode (On/off + Vol Up)
the tablet show me device state : locked
I am in state HBOOT
the on my computer I do that
C:\Users\maison>fastboot oem unlock
...
(bootloader) ability is 0
(bootloader) Permission denied for this command!
OKAY [ 0.015s]
finished. total time: 0.018s
after I go in FASTBOOT mode then :
C:\Users\maison>fastboot oem unlock
< waiting for device >
what can I do to have the Key to unlock
No you need fastboot mode to unlock the bootloader!
Is the command "fastboot devices" listing your device. If not check your drivers for your device.
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot devices
HT4B6JT00881 fastboot
after that i try :
C:\Program Files (x86)\Minimal ADB and Fastboot>adb sideload volantis-ota-n9f27m-ad1aee0f.zip
loading: 'volantis-ota-n9f27m-ad1aee0f.zip'adb server is out of date. killing...
* daemon started successfully *
serving: 'volantis-ota-n9f27m-ad1aee0f.zip' (~0%) * failed to read command: Invalid argument
i think tablet i now connected to computer
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot oem unlock
...
(bootloader) ability is 0
(bootloader) Permission denied for this command!
OKAY [ 0.011s]
finished. total time: 0.014s
As suspected the option to unlock is not selected in developer options.
If your successful in sideloading an OTA image in recovery mode (not fastboot mode), you will still encounter FRP on booting the device.
Edit: - As said before ADB commands do not work in fastboot mode. And fastboot commands do not work in Recovery mode!
As said before your only hope is to remember your account and password used (or the very last account you used on the device might work).
If you haven't updated the rom in the last year, you maybe able to use FRP Bypass trick.
jackvig said:
Hello
I have a problem when I want to unlock my nexus 9.
First I have a problem because my tablet freezed.
I have made a factory reset, then google said me : used the first account to use your tablet" but I lost this account
So I want to flash my tablet.
to do that, I use the tutorial on HTC site. on step 5 they say:
type adb oem unlock
but the CMD windows just say:
<waiting for device>
then I try to show devices with adb device but my window don't show device.
to do those step my tablet was in recovery more "fastboot usb"
can you help me?
thanks
Jack
Click to expand...
Click to collapse
You should not have factory reset if you do not know the account password. It is protected by "factory reset protection". To prevent it from being used if it is stolen. You are most likely going to need the password for the account that was logged in when you reset.
Flashing is not going to help. And as mentioned previously, you cannot unlock the bootloader now since you cannot go into developer options and turn on oem unlocking.
Dear all,
I have made numerous attempts to unlock the bootloader of my Wiko U Feel Prime, but to no avail.
(My goal is to flash TWRP, root with Magisk and install LineageOS.)
USB debugging and OEM unlocking are enabled in the developer settings.
ADB recognises the device. When I execute adb reboot bootloader, the device reboots, and doesn't get past the "powered by Android" screen – but is nonetheless found by fastboot when I run fastboot devices. Seems like the USB drivers are functioning properly, correct?
Now, when I run fastboot oem unlock, I get the following response:
Code:
...
FAILED (remote: unknown command)
finished. total time: -0.000s
The command fastboot flashing unlock gives the same result.
Moreover, fastboot getvar all displays no unlocked variable. The command fastboot getvar unlocked yields
Code:
unlocked:
By the way, this phone was shipped SIM unlocked.
I've spent hours looking around the web for solutions, but everyone (including guides specifically written for Wiko U Feel Prime) simply says "unlock the bootloader" as if it's a trivial task. And I've run out of ideas. Could anyone help?
Thank you very much.
hello everyone.
my phone is stuck in meizu 16th and fastboot mode.
I can't upload twrp.
I can't load rom.
can you help me please
my English is bad. sorry..
@ybk993
Try
Code:
fastboot devices
fastboot reboot
to boot into normal Android
jwoegerbauer said:
@ybk993
Try
Code:
fastboot devices
fastboot reboot
to boot into normal Android
Click to expand...
Click to collapse
I tried but it didn't work.
Hi did you manage to make it work again I have the same issue
Hi Guys,
can you help me out?
I have the 16th as well and I´m stuck during unlocking the bootloader.
adb devices
adb reboot bootloader
> all good.
fastboot devices
"shows the name"
But after "fastboot flashing unlock" there is an failed message:
"FAILED (remote: Command not support: the display is not enabled)"
The display is on and shows "=> Fastboot mode (sec, locked, unrooted)
OEM unlocking and USB debugging is activated....
What should i de next?
MrWukong said:
Hi Guys,
can you help me out?
I have the 16th as well and I´m stuck during unlocking the bootloader.
adb devices
adb reboot bootloader
> all good.
fastboot devices
"shows the name"
But after "fastboot flashing unlock" there is an failed message:
"FAILED (remote: Command not support: the display is not enabled)"
The display is on and shows "=> Fastboot mode (sec, locked, unrooted)
OEM unlocking and USB debugging is activated....
What should i de next?
Click to expand...
Click to collapse
Hi, I have the same problem. have you dealt with her? if yes, then tell me