Unlocking bootloader doesn't work in Oneplus 7

Currently on hold....First draft, very raw: How to successfully use e/OS/installer (web)

clic here to see Official instructions

Install /e/OS on a OnePlus 7 - “guacamoleb”

Unlocking the bootloader

Tip: The steps given below only need to be run once per device.

Warning: Unlocking the bootloader will erase all data on your device! Before proceeding, ensure the data you would like to retain is backed up to your PC and/or an online drive

Warning: Some vendors/manufacturers prevent the bootloader from being unlocked. Depending on where your device was acquired you may or may not be able to unlock the bootloader. To verify if your device is compatible please check the devices list.

  1. Enable OEM unlock in the Developer options under device Settings, if present.
  2. Connect your device to your PC via USB.
  3. On the computer, open a command prompt (on Windows) or terminal (on Linux or macOS) window, and type:
 adb reboot bootloader

You can also boot into fastboot mode via a key combination:

  • With the device powered off
  • hold Volume Up + Volume Down + Power.
  1. Once the device is in fastboot mode, verify your PC finds it by typing:
 fastboot devices

5.Tip:* If you see no permissions fastboot while on Linux or macOS, try running fastboot as root.

  1. Now type the following command to unlock the bootloader:
 fastboot oem unlock
  1. If the device doesn’t automatically reboot, reboot it. It should now be unlocked.
  2. Since the device resets completely, you will need to re-enable USB debugging to continue.