Before you flash the images that you built in the previous step, make sure your device is unlocked through Sony’s unlock boot loader service and that the device is in Fastboot mode.
To set your device in Fastboot:
- On your device: Connect the device to your computer in Fastboot mode, by pressing volume up while inserting the USB cable.
Note: When the device is in Fastboot mode, the LED on the device will be illuminated in blue.
Devices released on 2020 and later
- On you PC: Enter the following command and wait for the device to reboot :
fastboot reboot fastboot
Note: When the device is in Fastboot mode, it will display a menu with "fastbootd" as title