I had installed Iodé successfully on my Fairphone 4 about 3 years ago. Now i want to flash the original Image again. But i can’t unlock the bootloader. On the command “fastboot oem unlock” i get the message:
I think it might be a faulty usb cable or usb port of the computer or the device. What happens when you type: fastboot flashing lock_critical
does it respond on the device itself?