FP3 not connecting to Windows or macOS. USB data dead? Can I install LineageOS without USB?

[yvmuell]

Just to clarify the screenshot is not showing bootloader aka fastboot you need to install whatever using a cable connected to PC.

@Gitling

Could I roll back the android version with an ota downgrade some how?

No

@Gitling

booting into Recovery and Fastboot. Still no ADB detection

ADB would never work in fastboot.

For fastboot when using windows often the bootloader driver need to be manually installed.

@yvmuell

To update the driver: connect the FP in fastboot mode to the PC, go to Windows Updates, check for updates manually, go to Optional Updates and Drivers and install everything regarding Google/Bootloader (e.g. Kedacom/LeMobile).