I have a J9210 which I had unlocked the bootloader and did experiments with it. Today, I decide to revert it to stock firmware and try to relock the bootloader.
- I have restored the firmware via EMMA, it applied the UK firmware to it, running build 55.1.A.3.49
After applying I had run these commands try to relock the bl:
- fastboot oem lock
- fastboot oem unlocked
And they both returned `Command not authenticated`
I also tried to run `fastboot flashing lock` and it returned `Command not supported`.
I will be grateful if someone explains how to it. Thanks.
I have solve the problem, it was my mistake.
The fastboot mode for locking bootloader should be the blue indicator, not the green one.
For anyone who finds this page in the future:
Power off the device.
Hold volume up + plug in the USB-C cable at the same time.
keep volume up held until you get a blue notifacation LED. (should take about 10 seconds)
make sure fastboot drivers and platform-tools are installed on your desktop OS of choice.
run this command in the platform-tools folder:
Code:
fastboot oem lock
then run:
Code:
fastboot reboot[CODE].
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Related
Bought this device and everything works great and I have root. When I try to unlock the boot loader by going to "Developer Options" and checking the "Oem Unlock", I then
Code:
adb reboot-bootloader
At this point I do a
Code:
fastboot oem unlock
Which then the device asks me to use the volume buttons to confirm, Volume up for yes and volume down for no. The problem I'm running into is in fastboot mode it seems my volume up and power key are completely ignored. They work in recovery and in android but not in the boot loader itself.
I have tried unplugging the phone after sending the command over to see if that is a factor but it doesn't seem so. I'm only allowed to use volume down which denies unlocking the boot loader.
Another thing if anybody can get me a scatter file that would be much appreciated.
Bump
Studio One Plus S0130uu
frodoswaggins said:
Bought this device and everything works great and I have root. When I try to unlock the boot loader by going to "Developer Options" and checking the "Oem Unlock", I then
Code:
adb reboot-bootloader
At this point I do a
Code:
fastboot oem unlock
Which then the device asks me to use the volume buttons to confirm, Volume up for yes and volume down for no. The problem I'm running into is in fastboot mode it seems my volume up and power key are completely ignored. They work in recovery and in android but not in the boot loader itself.
I have tried unplugging the phone after sending the command over to see if that is a factor but it doesn't seem so. I'm only allowed to use volume down which denies unlocking the boot loader.
Another thing if anybody can get me a scatter file that would be much appreciated.
Click to expand...
Click to collapse
How did you root the phone?
Hoping for an answer to the bootloader question as well. For root I'm going to attempt kingoroot and replace with supersu
Hello, I have problem with my softbricked Nexus 5.
phone is full stock
bootloader is locked
USB debugging is not enabled
Android 6.0.1
all buttons are working
USB socket is fine
Factory reset from recovery mode is not working - still bootlooping
My purpose is to bring it to live, but I am stuck. Due to locked bootloader I have to use LG Flash Tool. Some time ago I used it with my other Nexus 5 and it was fine - worked excellent. Now I want to do it again with other phone but I am stuck on start: Can't enter download mode (volume up+usb cable). When I am trying to enter to download mode,charging battery icon appears and after few seconds my phone is being recognized as MTP USB device in device manager. I thought it is a problem with the phone, but tried with another working Nexus and there is no difference - it looks like problem with phone-pc connection to me. I tried few cables (original samsung and nokia) and two pc's - no difference. Tried all USB ports etc. Clean reinstall (with registry keys delete) doesn't help, updated version 4.2 neither. Do you have any ideas how to fix it?
Download mode? Never heard of that on the Nexus 5. There is a fastboot mode for flashing stock ROMs and to unlock the bootloader.
I recommend unlocking the bootloader and using NRT to flash a stock ROM.
audit13 said:
Download mode? Never heard of that on the Nexus 5. There is a fastboot mode for flashing stock ROMs and to unlock the bootloader.
I recommend unlocking the bootloader and using NRT to flash a stock ROM.
Click to expand...
Click to collapse
I have NRT but problem is that to unlock bootloader I have to enable USB debugging - I can't do it with bootlooping phone.
Bootloader can be unlocked without enabling debugging as you are not running adb commands, you need to run fastboot commands.
audit13 said:
Download mode? Never heard of that on the Nexus 5. There is a fastboot mode for flashing stock ROMs and to unlock the bootloader.
I recommend unlocking the bootloader and using NRT to flash a stock ROM.
Click to expand...
Click to collapse
audit13 said:
Bootloader can be unlocked without enabling debugging as you are not running adb commands, you need to run fastboot commands.
Click to expand...
Click to collapse
Thanks! Can I do it with NRT also?
Easiest way to unlock the bootloader on a windows machine is to do this:
make sure that the necessary fast boot drivers are installed;
boot phone into fast boot mode by holding down volume up, volume down, and power;
connect the phone to the computer;
type "fastboot oem unlock" without the quotation marks and press enter key.
Unlocking will wipe the phone.
Once unlocked, you can flash a stock ROM using fastboot commands.
audit13 said:
Easiest way to unlock the bootloader on a windows machine is to do this:
make sure that the necessary fast boot drivers are installed;
boot phone into fast boot mode by holding down volume up, volume down, and power;
connect the phone to the computer;
type "fastboot oem unlock" without the quotation marks and press enter key.
Unlocking will wipe the phone.
Once unlocked, you can flash a stock ROM using fastboot commands.
Click to expand...
Click to collapse
Ok I did it. Do I have to proceed "fastboot reboot" command? when I am doing it it reboots and still bootlooping. When I enter bootloader it is locked again
If the bootloader relocks itself when the phone is rebooted, the memory chip is damaged and will need a motherboard replacement.
Fastboot Mode
prodcut_name - sdm845
variant - sdm ufs
bootloader version -
baseband version -
serial number - af102b7a
secure boot - yes
device state - locked
what i tried
adm devices - empty
fastboot devices - af102b7a
fastboot oem unlock FAILED (remote: `flashing unlock is not allowed
fastboot rerror command failed
the windows device manager i installed google android bootloader interface because i cannot install the oneplus specific driver it exits with error message
I cannot go to recovery mode from fastboot nor change any setting like enable oem un-lock or usb debbuging option
Any chance to unlock and flash the with new image
Enable Oem unlocking in developer options
@Tab E mercy but i can^t exit out of the fastbood mode to chagne the settings i`m locked inside this bootloader mode and cant do anything else but try with fastboot oem unlock...
Try
Code:
fastboot devices
fastboot reboot
@jwoegerbauer the commands work the oneplus is rebooting into the fastbood mode again i need to exit the fastbood mode because maybe the os deleted and can only use fastboot mode to flash it or else i dont know how to exit the fastboot.
I don`t know if developer mode is on or if oem lock is unlocked but since i cannot go back into the oss of the system what can i do to recover the device completely
i`m stuck in this fastboot mode and no commaand is helping to get out of it what is the solution_maybe to take out the battery it is really hard have you had the same issues?
Whether phone should run in ADB mode or Fastboot mode or Recovery mode or ADB Sideload mode is set via a kernel flag read by bootloader when phone boots up. Pulling out phone's battery doesn't change this flag.
Typically to boot Android in NORMAL mode you run
Code:
adb devices
adb reboot
Hi, i am loading booting to bootloader from adb with commnad (adb reboot bootloader) this isnt working, only restart its instantly switch to normal os, any ideas ?
Run
Code:
adb reboot
or
Code:
fastboot reboot
oh sorry man, i am idiot, and i am say it wrong.. I trying boot to fastboot but not working instantly switch to os, any ideas please ?
Unlock bootloader if not done yet.
where i unlock bootloader ? In developer settings ? (i have unlocked)
Enabling OEM Unlock in Developer options doesn't unlock the bootlader, it simply prepares the bootloader to get unlocked via fastboot command.
More info here:
How to Unlock Bootloader via Fastboot on Android
Unlocking the bootloader via Fastboot is the easiest thing to do. But not all Android devices support straightforward bootloader unlocking. Many manufacturers put up a setup on their devices to let…
nerdschalk.com
xXx yYy said:
Enabling OEM Unlock in Developer options doesn't unlock the bootlader, it simply prepares the bootloader to get unlocked via fastboot command.
More info here:
How to Unlock Bootloader via Fastboot on Android
Unlocking the bootloader via Fastboot is the easiest thing to do. But not all Android devices support straightforward bootloader unlocking. Many manufacturers put up a setup on their devices to let…
nerdschalk.com
Click to expand...
Click to collapse
Only I have a small problem I don't unlock my bootloader via fastboot when it doesn't work :/ It immediately jumps to my system when I boot fastboot, even with a command like ,,adb reboot fastboot"
Matyas66055 said:
Only I have a small problem I don't unlock my bootloader via fastboot when it doesn't work :/ It immediately jumps to my system when I boot fastboot, even with a command like ,,adb reboot fastboot"
Click to expand...
Click to collapse
I have new thread, where i am writing all info :/ https://forum.xda-developers.com/t/zte-blade-a7-2019-fastboot-mode-missing.4462035/
I don't know if you are still interested in accessing Fastboot but you can access it using a specific firmware version.
Still, let me tell you that unlocking the bootloader is virtually impossible. Since the well-known generic method doesn't work for the SoC SC9863A, you need to have a special Fastboot's program version and a dedicated private key that only they provide.... and I emphasize the word "dedicated" since apparently ZTE did not use a generic key to sign their ROMS. At least on this device.
Unless they decide to release the key or give support to unlocking the bootloader, all we can do is wait for them to change their minds. Because they don't want to provide it. I know because I tried to order it several times.
Tell me how to remove orange state after unlocking the bootloader? there is also a problem, the body does not enter the fastboot, when trying to log in, it writes: the serial is not match fastboot unlock verify fail and after a few seconds the inscription orange state. the phone does not start and does not enter fastboot. it is included only in the recovery. I tried to flash through recovery writes that the version is lower than the updated one. what to do about it?
Orange state warning is quite normal after unlocking bootloader. Fastboot won't work, instead you can use fastbootd. Just use adb and type "adb reboot fastboot"