I have seen this result with a corrupt OS but as “Fastboot mode” was recognised by computer without any screen recognition software could then be re-installed: https://forum.fairphone.com/t/dictionary-entry-fastboot/27050
I have seen this result with a corrupt OS but as “Fastboot mode” was recognised by computer without any screen recognition software could then be re-installed: https://forum.fairphone.com/t/dictionary-entry-fastboot/27050