OEM unlock problem

shivmahar83

Dear friends,
I have LG Google Nexus 5 (Hammerhead D821(H) 32GB) model. Some days ago I tried to install Ubuntu Touch OS through UBports Software in my nexus 5 phone. But I forgot to enable USB Debugging first. So when I started the flash process and try to unlock bootloader, one time it show lock state unlocked. But In reality it was not unlocked. Because of this reason Ubuntu Touch OS installation is not completed and it corrupted my phone. Now I am unable to boot in android also. I also tried to re-flash my phone with Google Factory image but it was not completed because of my bootloader is locked. I don't know how i can unlock bootloader now. I used Wipe Data & Factory Reset option in Recovery Mode but it is also vain. I also used ADB sideload to install android os but again vain. Please help me how can I correct my phone and become again able to install Ubuntu Touch.

Lakotaubp

@shivmahar83 Try seeing if fastboot still detects the device then run fastboot unlock

First in terminal run
Fastboot devices you should see your device then
oem fastboot unlock
fastboot reboot

Then try again

shivmahar83

I tried it. But OEM is not unlocking because I didn't on USB Debugging as I said in my post.

joe

@shivmahar83
According to this, fastboot commands should still work even if usb debugging is off:
https://forum.xda-developers.com/google-nexus-5/help/unlocking-bootloader-usb-debugging-t3761785

Which computer OS are you using?

stanwood

@joe Did you try the following command in your terminal? : "sudo fastboot oem unlock" 1rst of all be sure you've got fastboot package installed (sudo apt install fastboot) and adb (sudo apt install adb).

joe

@stanwood said in OEM unlock problem:

@joe Did you try the following command in your terminal? : "sudo fastboot oem unlock" 1rst of all be sure you've got fastboot package installed (sudo apt install fastboot) and adb (sudo apt install adb).

@shivmahar83

flohack

@shivmahar83 There must be something wrong with your description, if you did not unlock your bootloader then it cannot show unlocked.

Anyways, you can always go to fastboot mode, unlock the bootloader and re-install the Google factory image or continue from there with the UBports installer. It is virtually impossible to brick a Nexus 5...

Lakotaubp

Just for more info what was on the device before you started. Stock android or something else? Is there a chance the partition sizes have been altered. That will stop UT installation. As Flohack said something is off in some way. I know you have tried before but does - fasboot devices - show your device when run.

shivmahar83

@joe Dear sir I try many times "sudo fastboot oem unlock" command in my Ubuntu PC but one time its show unlocked but again it shows unlocked after rebooting bootloader.

Lakotaubp

@shivmahar83 can you please try just fastboot devices and let us know the result. The more info we have the easier it is to help.

shivmahar83

@stanwood Dear sir I try many times "sudo fastboot oem unlock" command in my Ubuntu PC but one time its show unlocked but again it shows unlocked after rebooting bootloader.

shivmahar83

@Lakotaubp Yes "sudo fastboot devices" command show the fastboot device is connected to my ubuntu pc.

Lakotaubp

@shivmahar83 Right good. Then run sudo fastboot OEM unlock then sudo fastboot reboot bootloader and ses what happens

shivmahar83

@Lakotaubp I did it. its unlock bootloader but when I reboot bootloader its again show state locked.

shivmahar83

if I use sudo adb sideload command this errors show

Lakotaubp

@shivmahar83 Try sudo fastboot oem unlock then sudo fastboot reboot bootloader.

shivmahar83

@Lakotaubp I also used it. One its show unlocked but after rebooting bootloader its again locked.

Rondarius

@shivmahar83 When it is unlocked, what happens when you run the Ubports installer?

Lakotaubp

@Rondarius Good idea

shivmahar83

@Rondarius The installation process stopped and below error shown through picture came.