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".
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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/
I can't seem to get ADB or Fastboot working in Recovery or Download Mode.
In recovery if I select the option 'install update from adb sideload' then my device shows up is adb (not useful to me right now) but not in fastboot, which is what I need to execute the 'fastboot oem unlock' command (is that the right way? I've already enabled oem unlocking in settings). I can flash files via Odin, do I need to flash twrp or something?
Any help would be appreciated!
EDIT:
So it turns out that the toggle 'allow oem unlocking' unlocks the bootloader. The reason i thought it didn't was because when I flashed the cf-auto-root file I got stuck in a bootloop. Turns out I had to flash the file, then go into recovery, then reboot which solved my problems.
Samsung devices do not support fastboot mode.
The device is already OEM unlocked. You should be able to boot into Download or Odin mode and flash pretty much anything.
ODIN only
what i messed up?
i have installed custom official cynogen14.1 rom and twrp recovery. everything was working fine.
but i messed up with bootloader. I have locked oem from fastboot mode without enabling option for oem unlocking in developer settings.
Now as my phone have custom rom and twrp installed it went into bootloop and only shows zuk logo and again restart.
What i diid till now?
i have opened backcover so that i can turn of bootloop and phone by disconecting battery.
I can enter into fastboot mode by pressing vol.+ and vol- buttons sumultaneously and connecting usb cable.
But i cannot unlock bootloader as it says unlocking bootloader not allowed. I have tried device specific commads like "fastboot -i 0x2b4c oem unlock" and "fastboot -i 0x2b4c oem unlock-go" but nothing works.
i have stock recovery image but cannot flash while bootloader is locked.
i can enter into adb sideload by following method:
by loading stock recovery by typing "fastboot boot recovery.img" (this does not work with twrp as it says signature varification failed)
and then selecting apply update >> selecting apply fron adb
this much i can do does anyone knows how to recover from such a state.
please help me or my phone will be a waste.
is there any way to install stock recovery i think phone will boot properly if i managed to install stock recovery.
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.
Hello. I have a lg v20 H990N. I flashed TWRP by dirty santa method and wanted to go back to stock. As per the instructions on the link https://forum.xda-developers.com/v20...-h990-t3624296, I used method 1a for going back to stock. I ran the code as mentioned in the method while using my backed up "abootbackup.img" but I accidently ran the code twice.
Code:
dd if=abootbackup.img of=/dev/block/bootdevice/by-name/aboot
sync
sleep 30
sync
After booting to bootloader. this is what I see written on the boot loader screen.
___________________________________
Welcome to fastboot mode for bootloader unlock:
*Quick Guidnance
1) Read Device Id
fastboot oem device-id
2) Write unlock key
fastboot flash unlock unlock.bin
3) Check boiotloader is unlocked
Fastboot getvar unlocked
*How to exit fastboot mide
USe "Fastboot reboot' command if fastboot is available
________________________________________
This is the meassage that pops up in fastboot. I can use fastboot but can't use "fastboot flash recovery twrp-3.0.2-1-h990.img" as it exits with error that remote: device is locked. I can't flash kdz with lg Up as Lg up says " there is no haadset connected". TWRP recovery is also not boot neither is the nougat rom that was installed. More \over my device is shown as "Kedacom USB device " in device manager in fastboot mode. Not in Com ports.
It apperas that my bootloader has locked somehow after flashing abootbackup and I can't unlock it as h990N is not supported by LG to unlock bootloader. screenshot attached.
Please help!!!
Yeah flashing the stock bootloader relocks most v20 variants, (the dirty santa bootloader can't truely unlock them, it just ignores the lock)
I'm not sure what you expected? Your link is broken, but it sounds like you reflashed stock firmware and then the stock bootloader and expected to be in a different situation than a fresh unrooted device?
You should be able to boot normally to Android or boot I to download mode and reroot from scratch.
.